Chicago Electric | 95424 Assembly and | Service manual | Chicago Electric 95424 Assembly and Service manual

R
INFUSION SYSTEM
For use with List Numbers 12348 and 12618
Technical Service Manual
430-95424-003 (Rev. 08/09)
3
©Hospira, Inc.
This document and the subject matter disclosed herein are proprietary information.
Hospira retains all the exclusive rights of dissemination, reproduction, manufacture, and sale.
Plum A+3 Infusion System
Technical Service Manual
Contents
Section 1
INTRODUCTION . . . . . . . . . . . . . . .
1.1 SCOPE . . . . . . . . . . . . . . . .
1.2 CONVENTIONS . . . . . . . . . . . . .
1.3 COMPONENT DESIGNATORS . . . . . . .
1.4 ACRONYMS AND ABBREVIATIONS . . . . .
1.5 USER QUALIFICATION . . . . . . . . . .
1.6 ARTIFACTS . . . . . . . . . . . . . .
1.7 INSTRUMENT INSTALLATION PROCEDURE .
1.7.1
UNPACKING . . . . . . . . . . .
1.7.2
INSPECTION . . . . . . . . . . .
1.7.3
SELF TEST . . . . . . . . . . . .
1.8 BIOMED SETTINGS . . . . . . . . . . .
1.8.1
IV PARAMETERS . . . . . . . . .
1.8.2
ALARMS LOG . . . . . . . . . .
1.8.3
SETTING THE TIME AND DATE. . . .
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. 1-1
. 1-1
. 1-2
. 1-2
. 1-3
. 1-5
. 1-5
. 1-5
. 1-6
. 1-6
. 1-6
. 1-8
. 1-10
. 1-12
. 1-13
Section 2
WARRANTY .
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2-1
SYSTEM OPERATING MANUAL .
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3-1
THEORY OF OPERATION . . . . . . . . . . . . . . . . .
4.1 GENERAL DESCRIPTION . . . . . . . . . . . . . .
4.2 ELECTRONIC SUBSYSTEM OVERVIEW . . . . . . . . .
4.2.1
CPU SUBSYSTEM . . . . . . . . . . . . . .
4.2.1.1
CPU . . . . . . . . . . . . . . . .
4.2.1.2
SYSTEM MEMORY ADDRESS MAP . . . .
4.2.1.3
PROGRAMMABLE READ-ONLY MEMORY .
4.2.1.4
STATIC RANDOM ACCESS MEMORY . . .
4.2.1.5
CONTROL LOGIC . . . . . . . . . .
4.2.1.6
LCD CONTROLLER . . . . . . . . . .
4.2.1.7
LCD BACKLIGHT CONTROL . . . . . .
4.2.1.8
LCD CONTRAST CONTROL. . . . . . .
4.2.1.9
REAL-TIME CLOCK . . . . . . . . . .
4.2.1.10 VOLTAGE MONITOR WATCHDOG TIMER .
4.2.1.11 ANALOG-TO-DIGITAL CONVERTER . . .
4.2.1.12 DIGITAL-TO-ANALOG CONVERTER . . .
4.2.1.13 FRONT PANEL KEYPAD MATRIX . . . .
4.2.1.14 FRONT PANEL [ON/OFF] KEY . . . . . .
4.2.1.15 FRONT PANEL LED INDICATORS . . . .
4.2.1.16 KEYPAD LOCKOUT INTERFACE . . . . .
4.2.1.17 NURSE CALL INTERFACE . . . . . . .
4.2.1.18 AUDIBLE INDICATORS . . . . . . . .
4.2.1.19 BARCODE READER INTERFACE . . . . .
4.2.1.20 DATAPORT INTERFACE . . . . . . . .
4.2.1.21 POWER SUPPLY INTERFACE . . . . . .
4.2.1.22 MECHANISM INTERFACE . . . . . . .
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. 4-1
. 4-1
. 4-2
. 4-3
. 4-3
. 4-3
. 4-4
. 4-4
. 4-4
. 4-4
. 4-5
. 4-5
. 4-5
. 4-6
. 4-6
. 4-8
. 4-8
. 4-8
. 4-8
. 4-8
. 4-9
. 4-9
. 4-9
. 4-10
. 4-10
. 4-11
Section 3
Section 4
Technical Service Manual
iii
430-95424-003
CONTENTS
4.2.2
POWER SUPPLY SUBSYSTEM . . . . . . . . .
4.2.2.1
MAIN SWITCHING REGULATOR . . . .
4.2.2.2
MAIN REGULATOR FAULT DETECTION .
4.2.2.3
SYSTEM POWER . . . . . . . . . . .
4.2.2.4
AUXILIARY SUPPLIES . . . . . . . . .
4.2.2.5
POWER CONTROL . . . . . . . . . .
4.2.2.6
BATTERY VOLTAGE MEASUREMENT . .
4.2.2.7
BATTERY CHARGE/DISCHARGE CURRENT
MEASUREMENT . . . . . . . . . .
4.2.2.8
BATTERY CHARGER . . . . . . . . .
4.2.3
MECHANISM SUBSYSTEM . . . . . . . . . .
4.2.3.1
MOTORS/MOTOR DRIVE . . . . . . .
4.2.3.2
MOTOR POSITION SENSORS . . . . . .
4.2.3.3
V2_5 REFERENCE VOLTAGE . . . . . .
4.2.3.4
AIR SENSORS . . . . . . . . . . . .
4.2.3.5
PRESSURE SENSORS . . . . . . . . .
4.2.3.6
PRESSURE SENSOR CALIBRATION . . .
4.2.3.7
CASSETTE TYPE/PRESENCE SELECTION .
4.2.3.8
SERIAL EEPROM . . . . . . . . . . .
4.3 PRINTED WIRING ASSEMBLIES . . . . . . . . . . .
4.3.1
POWER SUPPLY PWA. . . . . . . . . . . . .
4.3.2
PERIPHERAL PWA . . . . . . . . . . . . . .
4.3.3
PERIPHERAL INTERFACE PWA . . . . . . . . .
4.3.4
CPU PWA . . . . . . . . . . . . . . . . .
4.3.5
DRIVER PWA . . . . . . . . . . . . . . . .
4.3.6
SWITCH PWA . . . . . . . . . . . . . . .
4.3.7
APP PWA . . . . . . . . . . . . . . . . .
4.4 REMOTE MOUNTED PERIPHERALS . . . . . . . . . .
4.4.1
LCD . . . . . . . . . . . . . . . . . . .
4.4.2
SEALED LEAD ACID BATTERY . . . . . . . . .
4.4.3
BARCODE READER WAND . . . . . . . . . .
4.5 MECHANICAL OVERVIEW . . . . . . . . . . . . .
4.5.1
CASSETTE . . . . . . . . . . . . . . . . .
4.5.2
MECHANISM ASSEMBLY . . . . . . . . . . .
4.5.2.1
MOTOR AND VALVE ASSEMBLIES. . . .
4.5.2.2
A/B VALVE SUBSYSTEM . . . . . . . .
4.5.2.3
INLET/OUTLET VALVE SUBSYSTEM . . .
4.5.2.4
PLUNGER DRIVE SUBSYSTEM . . . . .
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4-13
4-13
4-14
4-14
4-14
4-14
4-15
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4-15
4-16
4-16
4-16
4-18
4-18
4-19
4-20
4-22
4-22
4-22
4-23
4-23
4-24
4-24
4-25
4-25
4-26
4-26
4-27
4-27
4-27
4-27
4-27
4-28
4-30
4-30
4-30
4-31
4-31
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5-1
5-1
5-1
5-2
5-3
5-3
5-4
5-4
5-6
5-6
5-6
5-7
5-8
5-9
Section 5
MAINTENANCE AND SERVICE TESTS . . . . . . . . .
5.1 ROUTINE MAINTENANCE . . . . . . . . . .
5.1.1
CLEANING AND SANITIZING . . . . . .
5.2 PERFORMANCE VERIFICATION TEST . . . . . .
5.2.1
EQUIPMENT REQUIRED . . . . . . . .
5.2.2
INSPECTION . . . . . . . . . . . . .
5.2.3
TEST SETUP . . . . . . . . . . . . .
5.2.4
SELF TEST . . . . . . . . . . . . . .
5.2.5
CASSETTE ALARM TEST . . . . . . . .
5.2.6
FREE FLOW TEST . . . . . . . . . . .
5.2.7
DISPLAY TEST . . . . . . . . . . . .
5.2.8
KEYPAD VERIFICATION/FUNCTIONAL TEST
5.2.9
ALARM LOUDNESS TEST . . . . . . . .
5.2.10 LOCKOUT SWITCH TEST . . . . . . . .
430-95424-003
iv
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Plum A+3 Infusion System
CONTENTS
5.2.11 PROXIMAL OCCLUSION TEST .
5.2.12 PROXIMAL AIR-IN-LINE TEST .
5.2.13 DISTAL AIR-IN-LINE TEST. . .
5.2.14 DISTAL OCCLUSION TEST . .
5.2.15 DELIVERY ACCURACY TEST . .
5.2.16 NURSE CALL TEST . . . . . .
5.2.17 ELECTRICAL SAFETY TEST . .
5.2.18 END OF THE PVT . . . . . .
5.5 PERIODIC MAINTENANCE INSPECTION
5.6 BATTERY OPERATION OVERVIEW . .
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5-9
5-10
5-11
5-11
5-13
5-14
5-14
5-15
5-15
5-16
TROUBLESHOOTING . . . . . . . . . . . . . . . . .
6.1 TECHNICAL ASSISTANCE. . . . . . . . . . . . .
6.2 WARNING MESSAGES . . . . . . . . . . . . . .
6.3 ALARM MESSAGES AND ERROR CODES . . . . . . .
6.3.1
OPERATIONAL ALARM MESSAGES . . . . . .
6.3.2
ERROR CODES REQUIRING TECHNICAL SERVICE
6.4 TROUBLESHOOTING PROCEDURES. . . . . . . . .
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. 6-1
. 6-1
. 6-1
. 6-2
. 6-2
. 6-7
. 6-11
REPLACEABLE PARTS AND REPAIRS . . . . . . . . . . . . . . . .
7.1 REPLACEABLE PARTS . . . . . . . . . . . . . . . . . . .
7.2 REPLACEMENT PROCEDURES . . . . . . . . . . . . . . . .
7.2.1
SAFETY AND EQUIPMENT PRECAUTIONS . . . . . . . .
7.2.2
REQUIRED TOOLS AND MATERIALS . . . . . . . . . .
7.2.3
RUBBER FOOT PAD REPLACEMENT . . . . . . . . . . .
7.2.4
BATTERY, WIRE HARNESS, DOOR, AND DOOR PAD
REPLACEMENT . . . . . . . . . . . . . . . . . .
7.2.5
AC POWER CORD, RETAINER, AND VELCRO STRAP
REPLACEMENT . . . . . . . . . . . . . . . . . .
7.2.6
SEPARATING THE FRONT ENCLOSURE, REAR ENCLOSURE,
AND MAIN CHASSIS ASSEMBLY . . . . . . . . . . .
7.2.7
PERIPHERAL INTERFACE ASSEMBLY REPLACEMENT . . . .
7.2.8
PERIPHERAL PWA REPLACEMENT . . . . . . . . . . .
7.2.9
PERIPHERAL COMPONENT REPLACEMENT . . . . . . . .
7.2.9.1
VOLUME CONTROL KNOB REPLACEMENT . . . .
7.2.9.2
PERIPHERAL COVER REPLACEMENT . . . . . . .
7.2.10 FRONT/REAR ENCLOSURE GASKET REPLACEMENT . . . .
7.2.11 LOWER FRONT ENCLOSURE GASKET REPLACEMENT . . . .
7.2.11.1 EMI GASKET REPLACEMENT . . . . . . . . . .
7.2.11.2 KEYPAD GASKET REPLACEMENT . . . . . . . .
7.2.11.3 TOP SEAL GASKET REPLACEMENT . . . . . . .
7.2.12 REAR ENCLOSURE ASSEMBLY COMPONENT REPLACEMENT .
7.2.12.1 POLE CLAMP ASSEMBLY AND BACKING PLATE
REPLACEMENT. . . . . . . . . . . . . . .
7.2.12.2 INTERNAL AC POWER CORD REPLACEMENT . . .
7.2.12.3 AC CONNECTOR REPLACEMENT . . . . . . . .
7.2.12.4 FUSE REPLACEMENT . . . . . . . . . . . . .
7.2.12.5 REAR ENCLOSURE GASKET REPLACEMENT . . . .
7.2.13 MINIPOLE ASSEMBLY REPLACEMENT . . . . . . . . . .
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7-1
7-1
7-1
7-1
7-2
7-2
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7-6
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7-7
7-9
7-10
7-11
7-12
7-12
7-15
7-15
7-16
7-17
7-17
7-18
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7-20
7-21
7-21
7-22
7-23
7-23
Section 6
Section 7
Technical Service Manual
v
430-95424-003
CONTENTS
7.2.14
MAIN CHASSIS ASSEMBLY COMPONENT REPLACEMENT . .
7.2.14.1 POWER SUPPLY PWA REPLACEMENT. . . . . . .
7.2.14.2 KEYPAD REPLACEMENT. . . . . . . . . . . .
7.2.14.3 DISPLAY ASSEMBLY REPLACEMENT . . . . . . .
7.2.14.4 CPU/DRIVER CABLE REPLACEMENT . . . . . . .
7.2.14.5 MOTOR POWER CABLE REPLACEMENT. . . . . .
7.2.14.6 CPU PWA REPLACEMENT . . . . . . . . . . .
7.2.14.7 PIEZO ALARM ASSEMBLY REPLACEMENT. . . . .
7.2.14.8 MECHANISM ASSEMBLY REPLACEMENT . . . . .
7.2.14.9 CASSETTE DOOR AND FLUID SHIELD REPLACEMENT
7.2.14.10 OPENER HANDLE ASSEMBLY REPLACEMENT . . .
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7-24
7-27
7-27
7-28
7-29
7-32
7-32
7-33
7-34
7-35
7-38
Section 8
SPECIFICATIONS .
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8-1
Section 9
DRAWINGS .
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9-1
Index .
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I-1
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1-11
1-11
1-12
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4-2
4-7
4-15
4-17
4-19
4-21
4-29
4-29
4-31
5-5
5-7
5-8
5-10
5-12
7-3
7-5
7-8
7-9
7-11
7-14
7-16
7-18
7-19
7-24
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Figures
Figure 1-1.
Figure 1-2.
Figure 1-3.
Figure 1-4.
Figure 1-5.
Figure 1-6.
Figure 1-7.
Figure 4-1.
Figure 4-2.
Figure 4-3.
Figure 4-4.
Figure 4-5.
Figure 4-6.
Figure 4-7.
Figure 4-8.
Figure 4-9.
Figure 5-1.
Figure 5-2.
Figure 5-3.
Figure 5-4.
Figure 5-5.
Figure 7-1.
Figure 7-2.
Figure 7-3.
Figure 7-4.
Figure 7-5.
Figure 7-6.
Figure 7-7.
Figure 7-8.
Figure 7-9.
Figure 7-10.
430-95424-003
Display and Keypad . . . . . . . . . . . . .
Biomed Settings . . . . . . . . . . . . . . .
IV Parameters. . . . . . . . . . . . . . . .
Common IV Parameters . . . . . . . . . . . .
Macro IV Parameters . . . . . . . . . . . . .
Alarms Log . . . . . . . . . . . . . . . .
Setting the Time and Date . . . . . . . . . . .
Electronic Functional Diagram. . . . . . . . . .
Serial Interface to ADC . . . . . . . . . . . .
System Startup and Shutdown Timing, Battery Powered
Stepper Motor Coils . . . . . . . . . . . . .
Air Sensor Block Diagram . . . . . . . . . . .
Pressure Sensor Excitation and Amplifier Block Diagram
Major Elements of the Dual-Channel Cassette . . . .
Fluid Path in the Cassette . . . . . . . . . . .
Mechanism Valve Pins and Sensor Locations . . . .
Display and Keypad . . . . . . . . . . . . .
Primary Screen . . . . . . . . . . . . . . .
Rear View . . . . . . . . . . . . . . . . .
Special Cassettes with Bubble Sensor Tips Removed .
Distal Occlusion Test Setup . . . . . . . . . .
Bottom View . . . . . . . . . . . . . . . .
AC Power Cord Assembly and Battery Assembly . . .
Front Enclosures, Rear Enclosure, and Main Chassis . .
Screw Placement Sequence . . . . . . . . . . .
Peripheral Interface Assembly and Peripheral PWAs. .
Peripheral Interface Assembly Components . . . . .
Lower Front Enclosure Gaskets . . . . . . . . .
External Rear Enclosure Assembly Components . . .
Internal Rear Enclosure Assembly Components . . .
Minipole Assembly . . . . . . . . . . . . .
vi
Plum A+3 Infusion System
CONTENTS
Figure 7-11.
Figure 7-11.
Figure 7-12.
Figure 7-13.
Figure 7-13.
Figure 7-14.
Figure 7-15.
Figure 9-1.
Figure 9-1.
Figure 9-2.
Figure 9-3.
Figure 9-4.
Figure 9-4.
Figure 9-5.
Figure 9-6.
Figure 9-6.
Figure 9-7.
Figure 9-8.
Figure 9-9.
Figure 9-10.
Main Chassis Components (1 of 2) . . . . . . . . . .
Main Chassis Components (2 of 2) . . . . . . . . . .
CPU/Driver Cable Routing . . . . . . . . . . . . .
Ferrite Tape Positioning (1 of 2) . . . . . . . . . . .
Ferrite Tape Positioning (2 of 2) . . . . . . . . . . .
Fluid Shield Replacement . . . . . . . . . . . . .
Cassette Door and Opener Handle Assembly Replacement .
Illustrated Parts Breakdown (1 of 2) . . . . . . . . . .
Illustrated Parts Breakdown (2 of 2) . . . . . . . . . .
Front Enclosures, Rear Enclosure, and Main Chassis Assembly
Front Enclosure Assemblies . . . . . . . . . . . . .
Rear Enclosure Assembly (1 of 2) . . . . . . . . . . .
Rear Enclosure Assembly (2 of 2) . . . . . . . . . . .
Peripheral Interface Assembly . . . . . . . . . . . .
Main Chassis Assembly (1 of 2) . . . . . . . . . . .
Main Chassis Assembly (2 of 2) . . . . . . . . . . .
CPU PWA, Display, and Keypad . . . . . . . . . . .
CPU PWA and Main Chassis . . . . . . . . . . . .
AC Power Cord, Retainer, Batteries, and Minipole. . . . .
Mechanism Assembly . . . . . . . . . . . . . . .
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7-25
7-26
7-30
7-31
7-31
7-36
7-37
9-5
9-7
9-9
9-11
9-13
9-15
9-17
9-19
9-21
9-23
9-25
9-27
9-29
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1-2
1-9
4-7
4-8
4-10
4-11
4-23
4-24
4-24
4-25
4-26
4-26
5-2
5-14
6-2
6-3
6-7
6-11
9-1
9-2
Tables
Table 1-1.
Table 1-2.
Table 4-1.
Table 4-2.
Table 4-3.
Table 4-4.
Table 4-5.
Table 4-6.
Table 4-7.
Table 4-8.
Table 4-9.
Table 4-10.
Table 5-1.
Table 5-2.
Table 6-1.
Table 6-2.
Table 6-3.
Table 6-4.
Table 9-1.
Table 9-2.
Conventions . . . . . . . . . . . . . . .
System Configuration Data . . . . . . . . . .
Analog Inputs. . . . . . . . . . . . . . .
Keypad Map . . . . . . . . . . . . . . .
CPU-Power Supply Interface . . . . . . . . .
CPU-Mechanism Interface Signals . . . . . . .
Power Supply PWA Interface Connections . . . .
Peripheral PWA Interface Connections . . . . . .
Peripheral Interface PWA Interface Connections . .
CPU PWA Interface Connections . . . . . . . .
Driver PWA Interface Connections . . . . . . .
APP PWA Interface Connections . . . . . . . .
Cleaning Solutions . . . . . . . . . . . . .
Electrical Safety Measurements . . . . . . . .
Warning Messages . . . . . . . . . . . . .
Operational Alarm Messages and Corrective Actions .
Error Codes Requiring Technical Service . . . . .
Troubleshooting with the PVT . . . . . . . . .
Drawings . . . . . . . . . . . . . . . .
IPB for the Infuser . . . . . . . . . . . . .
Technical Service Manual
vii
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430-95424-003
CONTENTS
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430-95424-003
viii
Plum A+3 Infusion System
Section 1
INTRODUCTION
The Plum A+®3 infusion system is designed to meet the growing demand for hospital wide
device standardization, and serves a wide range of general floor and critical care needs.
The infusion system consists of three component infusers, designated line 1, line 2,
and line 3. By incorporating three lines into one unit, the Plum A+3 provides three primary
lines, three secondary lines, and piggyback fluid delivery capabilities.
Compatibility with the LifeCare® 5000 PlumSet® administration sets and accessories
makes the Plum A+3 a convenient and cost-effective infusion system.
1.1
SCOPE
This manual is organized into the following sections:
❏ Section 1
Introduction
❏ Section 2
Warranty
❏ Section 3
System Operating Manual
❏ Section 4
Theory of Operation
❏ Section 5
Maintenance and Service Tests
❏ Section 6
Troubleshooting
❏ Section 7
Replaceable Parts and Repairs
❏ Section 8
Specifications
❏ Section 9
Drawings
❏ Appendix
❏ Index
❏ Technical Service Bulletins
If a problem in device operation cannot be resolved using the information in this manual,
contact Hospira (see Section 6.1).
Specific instructions for operating the device are contained in the Plum A+® and Plum A+®3
System Operating Manual.



Note: The terms “infusion system”, “infuser”, and “device” are used interchangeably
throughout the manual.
Note: Figures are rendered as graphic representations to approximate actual product.
Therefore, figures may not exactly reflect the product.
Note: Screen representations are examples only, and do not necessarily reflect
the most current software version.
Technical Service Manual
1-1
430-95424-003
SECTION 1 INTRODUCTION
1.2
CONVENTIONS
The conventions listed in Table 1-1 are used throughout this manual.
Table 1-1.
Convention
Conventions
Application
Example
Italic
Reference to a section, figure,
table, or publication
(see Section 6.1)
[ALL CAPS]
In-text references to keys,
touchswitches, and display
messages
[START]
Emphasis
CAUTION: Use proper ESD grounding
techniques when handling components.
Screen displays
Select Set Time and Date.
Bold
CASSETTE TEST IN PROGRESS
Throughout this manual, warnings, cautions, and notes are used to emphasize important
information as follows:
WARNING:
A WARNING CONTAINS SPECIAL SAFETY EMPHASIS AND MUST
BE OBSERVED AT ALL TIMES. FAILURE TO OBSERVE A WARNING
MAY RESULT IN PATIENT INJURY AND BE LIFE-THREATENING.
CAUTION: A CAUTION usually appears in front of a procedure or statement.
It contains information that could prevent hardware failure, irreversible damage
to equipment, or loss of data.

Note: A note highlights information that helps explain a concept or procedure.
1.3
COMPONENT DESIGNATORS
Components are indicated by alpha-numeric designators, as follows:
Battery
BT
Diode
D
Resistor
Capacitor
C
Fuse
F
Switch
Crystal
Y
Integrated Circuit
U
Transistor
R
SW
Q
The number following the letter is a unique value for each type of component (e.g., R1, R2).

Note: Alpha-numeric designators may be followed with a dash (-) number that
indicates a pin number for that component. For example, U15-13 is pin 13
of the encoder chip [U15] on the interface PWA.
430-95424-003
1-2
Plum A+3 Infusion System
1.4
ACRONYMS AND ABBREVIATIONS
1.4
ACRONYMS AND ABBREVIATIONS
Acronyms and abbreviations used in this manual are as follows:
A Ampere
AC Alternating current
A/D Analog-to-digital
ADC Analog-to-digital converter
APP Air, pressure, and pin
BCR Barcode reader
CCA Clinical care area
CCFT Cold cathode fluorescent tube
CMOS Complementary metal-oxide semiconductor
CPU Central processing unit
DAC Digital-to-analog converter
DC Direct current
DIP Dual in-line package
DMA Direct memory access
DMM Digital multimeter
DPM Digital pressure meter
ECG Electrocardiograph
EEG Electroencephalogram
EEPROM Electrically erasable/programmable read-only memory
EMG Electromyogram
EMI Electromagnetic interference
ESD Electrostatic discharge
ETO Ethylene oxide
FPGA Field programmable gate array
FSR Force sensing resistor
hr Hour
Hz Hertz
ID Identification
I/O Input/output
IPB Illustrated parts breakdown
IV Intravenous
KB Kilobyte
kHz Kilohertz
KVO Keep vein open
lbs Pounds
LCD Liquid crystal display
Technical Service Manual
1-3
430-95424-003
SECTION 1 INTRODUCTION
LED Light emitting diode
L/S Line select
MB Megabyte
MHz Megahertz
min Minute
mL Milliliter
mL/hr Milliliter per hour
MMIO Memory-mapped input/output
MOSFET Metal-oxide semiconductor field-effect transistor
ms Millisecond
nF nanofarad
Op-amp Operational amplifier
pF picofarad
PROM Programmable read-only memory
PVT Performance verification test
PWA Printed wiring assembly
PWM Pulse width modulator
RAM Random-access memory
rms Root-mean-square
RTC Real-time clock
SCC Serial communication controller
SCP Serial communication port
SMT Surface mount technology
SPI Serial peripheral interface
SRAM Static random access memory
TQFP Thin quad flat pack
V Volt
VAC Volts AC
VCC Collector supply voltage
VCO Voltage-controlled oscillator
VDC Volts DC
VSC 5 VDC supply circuitry
VSO Voltage sweep oscillator
VTBI Volume to be infused
WDI Watchdog input
430-95424-003
1-4
Plum A+3 Infusion System
1.5 USER QUALIFICATION
1.5
USER QUALIFICATION
The Plum A+3 must be used at the direction of or under the supervision of licensed
physicians or certified healthcare professionals who are trained in the use of the infusion
system and the administration of parenteral and enteral fluids and drugs, and whole blood
or red blood cell components. Training should emphasize preventing related IV
complications, including appropriate precautions to prevent accidental infusion of air.
The epidural route can be used to provide anesthesia or analgesia.
1.6
ARTIFACTS
Nonhazardous, low-level electrical potentials are commonly observed when fluids
are administered using infusion devices. These potentials are well within accepted safety
standards, but may create artifacts on voltage-sensing equipment such as ECG, EMG,
and EEG machines. These artifacts vary at a rate that is associated with the infusion rate.
If the monitoring machine is not operating correctly or has loose or defective connections
to its sensing electrodes, these artifacts may be accentuated so as to simulate actual
physiological signals.
To determine if the abnormality in the monitoring equipment is caused by the infuser
instead of some other source in the environment, set the device so that it is temporarily
not delivering fluid. Disappearance of the abnormality indicates that it was probably
caused by electronic noise generated by the infuser. Proper setup and maintenance
of the monitoring equipment should eliminate the artifact. Refer to the appropriate
monitoring system documentation for setup and maintenance instructions.
1.7
INSTRUMENT INSTALLATION
PROCEDURE
CAUTION: Infusion system damage may occur unless proper care is exercised
during product unpacking and installation.
CAUTION: Infusion system performance may be degraded by electromagnetic
interference (EMI) from devices such as electrosurgical units, cellular phones,
and two-way radios. Operation of the infusion system under such conditions should
be avoided.
Accessory equipment connected to the analog and digital interfaces must be certified
according to the respective IEC standards (e.g., IEC 60601-1 for medical equipment).
Furthermore, all configurations shall comply with the system standard IEC 60601-1-1.
Any person who connects additional equipment to the signal input or output part
is configuring a medical system, and is therefore responsible for ensuring that the system
complies with the requirements of IEC 60601-1-1. If in doubt, contact Hospira.
The instrument installation procedure consists of unpacking, inspection, and self test.
Technical Service Manual
1-5
430-95424-003
SECTION 1 INTRODUCTION
1.7.1
UNPACKING
Inspect the shipping container as detailed in Section 1.7.2. Use care when unpacking
the infusion system. Retain the packing slip and save all packing material in the event
it is necessary to return the infuser to the factory. Verify the shipping container contains
a copy of the system operating manual.
1.7.2
INSPECTION
Inspect the shipping container for damage. Should any damage be found, contact the
delivering carrier immediately.
CAUTION: Inspect the infuser for evidence of damage. Do not use the device if it
appears to be damaged. Should damage be found, contact Hospira (see Section 6.1).
Inspect the infusion system periodically for signs of defects such as worn accessories,
broken connections, or damaged cable assemblies. Also inspect the infuser after repair
or during cleaning. Replace any damaged or defective external parts.
1.7.3
SELF TEST
When performing the self test, line 1, line 2, and line 3 must be tested.
However, if appropriate, the test may be performed on all lines concurrently.
CAUTION:
Do not place the infuser in service if the self test fails.
If an alarm condition occurs during the self test, cycle the power and repeat the self test.
If the alarm condition recurs, note the message and take corrective action (see Section 6).
Repeat the self test. If the alarm condition continues to recur, remove the infuser from
service and contact Hospira.


Note: Do not place the infuser in service if the battery is not fully charged.
To make certain the battery is fully charged, connect the infuser to AC power
for six hours (see Section 8).
Note: Records prior to the date the infuser is received may be from
the manufacturing process. Disregard any events from dates prior to receipt
of the infuser.
To perform the self test, see Figure 1-1, and proceed as follows:
1. Connect the AC power cord to a grounded AC outlet. Verify the Charge/Line indicator
CHARGE illuminates and an alarm tone sounds.
2. Without a cassette installed, press [ON/OFF] to turn on the infuser.
3. The LCD screen briefly displays the SELF TEST screen (see Figure 1-1). If the SELF
TEST screen does not appear, contact Hospira.
4. After the self test is complete, the message INSERT PLUM SET CLOSE LEVER appears.
5. Verify the time and date. To set the time and date, see Section 1.8.3.
6. Open the cassette door and insert a primed cassette. Close the cassette door.
The cassette test is complete when the CASSETTE TEST IN PROGRESS message
disappears.
430-95424-003
1-6
Plum A+3 Infusion System
1.7

INSTRUMENT INSTALLATION PROCEDURE
Note: The message MECHANISM INITIALIZATION IN PROGRESS may briefly
appear prior to the CASSETTE TEST IN PROGRESS message.
7. The CLEAR SETTINGS? message may appear. Press the [YES] softkey.
8. Press [ON/OFF] to turn off the infuser.
LINE FLOW INDICATORS
A
B
HOSPIRA Plum A+
Version X.XX - MM/DD/YY
Copyright HOSPIRA
2009
STATUS
REGION
System Self Test
In Progress
WORKING
REGION
MESSAGE
REGION
SOFTKEY
LABEL REGION
START
STOP
CHARGE
LINE
INDICATOR
ON / OFF
1
4
7
CLEAR
Figure 1-1.
Technical Service Manual
2
5
8
0
3
6
9
.
SOFT KEYS
SELECT
KEYPAD
SILENCE
Display and Keypad
1-7
430-95424-003
SECTION 1 INTRODUCTION
1.8
BIOMED SETTINGS
The BIOMED SETTINGS screens contain the following options that can be changed
or reviewed by qualified personnel:
- IV screen parameters
- Alarms log
- Set time and date
All infusers (new or refurbished) are shipped with factory settings (see Table 1-2).


Note: Biomed screens do not time out for the Infuser Idle alarm or No Action
alarm.
Note: The battery will not be detected in the Biomed service mode.
To access the Biomed settings, proceed as follows:
1. Open the door and turn on the device. The infusion system will perform a self test.
2. After the self test is complete, the message INSERT PLUM SET CLOSE LEVER appears.
3. Press the decimal [.] key, then [START], and verify the BIOMED SETTINGS screen
is displayed (see Figure 1-2).

Note: The BIOMED SETTINGS screen may display [CHANGE BATTERY].
The [CHANGE BATTERY] softkey does not appear on earlier versions
of the Plum A+3.
430-95424-003
1-8
Plum A+3 Infusion System
1.8
Table 1-2.
BIOMED SETTINGS
System Configuration Data
Data
Options Range
Factory Setting
Maximum macro IV mode delivery rate
0.1 - 99.9 mL/hr
and 100 - 999 mL/hr
999 mL/hr
Macro distal occlusion alarm
(pressure level)
1 to 15 psi
6 psi
Deliver together enable
Concurrent or Piggyback
Piggyback
Delayed start/standby enable
Yes or No
Yes
Continue rate
Rate or KVO
KVO
Nurse callback default
Yes or No
No
Time
(24 hr) 00:00 - 23:59 in
one minute increments
Factory time
Date
1/1/2002 - 12/31/2098
Factory date
BIOMED SETTINGS
IV Screen Parameters
Alarm Log
Set Time and Date
Select, then Choose
Change
Battery
Figure 1-2.
Technical Service Manual
Choose
Biomed Settings
1-9
430-95424-003
SECTION 1 INTRODUCTION
1.8.1
IV PARAMETERS
The IV Parameters screen contains Common IV Parameters and Macro IV Parameters
(see Figure 1-3).
To change the IV parameters see Figure 1-4 and Figure 1-5, then proceed as follows:
1. Access the BIOMED SETTINGS screen as described in Section 1.8.
2. Select IV Screen Parameters, and press [CHOOSE].
3. Select the parameters to be changed, and press [CHOOSE].
4. Using the [CHANGE VALUE] softkey, select the desired value, and press [ENTER].
5. Repeat step 3 and step 4 for each parameter to be changed.
6. If there are no other changes, turn off the infuser.
BIOMED SETTINGS
IV Parameters
Common IV Parameters
Macro IV Parameters
Select, then Choose
Choose
Figure 1-3.
430-95424-003
Back
IV Parameters
1 - 10
Plum A+3 Infusion System
1.8
BIOMED SETTINGS
BIOMED SETTINGS
Common IV Parameters
Continue Rate
KVO
Deliver Together
Concurrent
Enable Delay/Standby
Yes
Callback Default
No
Select using Change Value
Change
Value
Figure 1-4.
Enter
Cancel/
Back
Common IV Parameters
BIOMED SETTINGS
Macro IV Parameters
6.0 psi
Default Distal Press
Max Rate
999 mL/hr
Enter Value using keypad
Enter
Figure 1-5.
Technical Service Manual
Cancel/
Back
Macro IV Parameters
1 - 11
430-95424-003
SECTION 1 INTRODUCTION
1.8.2
ALARMS LOG
The Alarms Log will retain the latest 40 alarm and malfunction codes, listed in order from
the most current to the oldest.
To view the Alarms Log see Figure 1-6, then proceed as follows:
1. Access the BIOMED SETTINGS screen as described in Section 1.8.
2. Select Alarms Log, and press [CHOOSE}. Use the [PAGE UP] and [PAGE DOWN]
softkeys to view the Alarms Log.
3. Press [BACK] to exit the Alarms Log and return to the main BIOMED SETTINGS
screen.
ALARMS LOG
6/23/09 01:43:01 E437 S/W Failure # 202
6/23/09 09:18:10 N190 Neg. Prox. Occl. A
6/22/09 23:44:11 N102 Infuser Idle 2 minutes
6/22/09 21:43:14 N161 Line A VTBI complete
6/22/09 11:44:20 N106 Distal occlusion
6/22/09 09:43:07 N161 Line A VTBI complete
6/22/09 06:23:20 N160 Line B VTBI complete
6/22/09 03:40:13 N101 No action alarm
Page
Up
Page
Down
Figure 1-6.
430-95424-003
Back
Alarms Log
1 - 12
Plum A+3 Infusion System
1.8
BIOMED SETTINGS
1.8.3
SETTING THE TIME AND DATE


Note: The infusion system will automatically display February 29 on leap year.
Note: Daylight savings and time zone changes must be made manually.
To set the time and date, see Figure 1-7, then proceed as follows:
1. Access the BIOMED SETTINGS screen as described in Section 1.8.
2. Select Set Time and Date, and press [CHOOSE].
3. Select the parameter to be changed, then enter the desired value.
4. Verify the time and date are correct, then press [ENTER] to return to the BIOMED
SETTINGS screen.
5. If there are no other changes, turn off the infuser.
BIOMED SETTINGS
Set Time and Date
Time
Year
Month
Day
14 : 22 hr:min
2009
02
14
Enter value using keypad
Enter
Figure 1-7.
Technical Service Manual
Cancel/
Back
Setting the Time and Date
1 - 13
430-95424-003
SECTION 1 INTRODUCTION
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430-95424-003
1 - 14
Plum A+3 Infusion System
Section 2
WARRANTY
Subject to the terms and conditions herein, Hospira, Inc., hereinafter referred
to as Hospira, warrants that (a) the product shall conform to Hospira's standard
specifications and be free from defects in material and workmanship under normal use
and service for a period of one year after purchase, and (b) the replaceable battery shall
be free from defects in material and workmanship under normal use and service
for a period of 90 days after purchase. Hospira makes no other warranties,
express or implied, and specifically disclaims the implied warranties of merchantability
and fitness for a particular purpose.
Purchaser's exclusive remedy shall be, at Hospira's option, the repair or replacement
of the product. In no event shall Hospira's liability arising out of any cause whatsoever
(whether such cause be based in contract, negligence, strict liability, other tort,
or otherwise) exceed the price of such product, and in no event shall Hospira be liable
for incidental, consequential, or special damages or losses or for lost business, revenues,
or profits. Warranty product returned to Hospira must be properly packaged and sent
freight prepaid.
The foregoing warranty shall be void in the event the product has been misused, damaged,
altered, or used other than in accordance with product manuals so as, in Hospira's
judgment, to affect its stability or reliability, or in the event the serial or lot number
has been altered, effaced, or removed.
The foregoing warranty shall also be void in the event any person, including the Purchaser,
performs or attempts to perform any major repair or other service on the product without
having been trained by an authorized representative of Hospira and using Hospira
documentation and approved spare parts. For purposes of the preceding sentence,
"major repair or other service" means any repair or service other than the replacement
of accessory items such as batteries and detachable AC power cords.
In providing any parts for repair or service of the product, Hospira shall have
no responsibility or liability for the actions or inactions of the person performing
such repair or service, regardless of whether such person has been trained to perform
such repair or service. It is understood and acknowledged that any person other than
a Hospira representative performing repair or service is not an authorized agent of Hospira.
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SECTION 2 WARRANTY
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Plum A+3 Infusion System
Section 3
SYSTEM OPERATING MANUAL
A copy of the System Operating Manual is included with every Plum A+3 infusion system.
If a copy is not available, contact Hospira (see Section 6.1).
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Plum A+3 Infusion System
Section 4
THEORY OF OPERATION
This section describes the Plum A+3 theory of operation. The theory of operation details
the general description, electronic subsystem overview, printed wiring assemblies,
remote mounted peripherals, and mechanical overview of the infusion system.
4.1
GENERAL DESCRIPTION
The infusion system includes the following features:
- Dose calculation
- Air detection (proximal/distal)
- Loading dose
- Serial communication
- Multistep programming
- Alarm history
- Therapy selection
- Volumes infused (A, B, total volumes)
- Nurse call
- KVO at dose end (1 mL/hr
or less depending on delivery rate)
or Continue Rate to continue
- Delayed Start setting
- Standby mode
- Variable distal pressure setting
- Drug Library
- Nonpulsatile volumetric accuracy
- Piggyback/concurrent delivery modes
- Microprocessor control
- Titration
- Large LCD
- 0.1-99.9 mL/hr flow rate range
for both lines (in 0.1 mL/hr increments)
- Panel back illumination on mains power
- Lockout switch
- 100-999 mL/hr flow rate range
for both lines (in 1 mL/hr increments)
- Standard fullfill, partfill, syringe,
and vial use
- Anti free-flow protection
- Enteral and parenteral fluid delivery
- Air removal/backpriming
- Blood and blood product delivery
- Battery gauge
Alarms include the following:
- Distal Occlusion
- Lockout Violation
- Proximal Occlusion
- VTBI Complete
- Distal Air-in-Line
- Valve/Cassette Test Failure
- Proximal Air-in-Line
- Nurse Call
- Low Battery
- No Action
- Door Opened While Pumping
- Infuser Idle for Two Minutes
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SECTION 4 THEORY OF OPERATION
4.2
ELECTRONIC SUBSYSTEM OVERVIEW
This section describes the function and electronic circuitry of the following three main
subsystems in the infusion system: CPU subsystem, power supply subsystem,
and mechanism subsystem (see Figure 4-1).

Note: An asterisk (*) denotes an active low or negative true logic signal.
Battery
Pressure Sensors
Power Supply PWA
Peripheral PWA
LCD Display
APP PWA
Switches PWA
Flex FSR
Keypad
Driver
PWA
CPU
PWA
Plunger, LS, & IO Motors
MECHANISM
FRONT PANEL
Main Piezo Buzzer
SYSTEM 1
Battery
Pressure Sensors
Peripheral PWA
Power Supply PWA
LCD Display
APP PWA
Switches PWA
Flex FSR
Driver
PWA
Keypad
CPU
PWA
Plunger, LS, & IO Motors
LEDs
On/Off Switch
FRONT PANEL
MECHANISM
Main Piezo Buzzer
SYSTEM 2
Battery
Pressure Sensors
Peripheral Interface PWA
Power Supply PWA
LCD Display
APP PWA
Switches PWA
Flex FSR
Driver
PWA
Plunger, LS, & IO Motors
Keypad
CPU
PWA
LEDs
On/Off Switch
MECHANISM
FRONT PANEL
Main Piezo Buzzer
SYSTEM 3
Figure 4-1.
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LEDs
On/Off Switch
Electronic Functional Diagram
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Plum A+3 Infusion System
4.2
ELECTRONIC SUBSYSTEM OVERVIEW
4.2.1
CPU SUBSYSTEM
The CPU subsystem contains the main microcontroller that is responsible for controlling
the display/keyboard interface, external communications interfaces, barcode reader (BCR)
interface, and system management.
The CPU subsystem provides the following functions:
- External memory devices access
- LCD interfaces
- Real-time clock generator interface
- System watchdog
- Analog-to-digital and digital-to-analog converter interface
- Keypad interfaces
- Control and monitor status signals, such as LEDs, audible alarms, volume control,
nurse call switch, and lockout switch
- Serial communication with host computer (DataPort) and barcode reader
- Power supply subsystem interface
- Mechanism subsystem interface
4.2.1.1
CPU
The central processing unit is a Motorola MC68302 CPU. The CPU has a closely coupled
16 bit data bus and 24 bit address bus, MC68000 microprocessor core, a system
integration block for peripherals, and an RISC communications processor. The MC68302
is packaged in a 144 pin thin quad flat pack (TQFP) package and operates from a 3.3 VDC
power supply.
The on-chip peripheral devices are isolated from the system through the dual port RAM.
The 1152 byte dual port RAM has 576 bytes of system RAM and 576 bytes of parameter
RAM that contains various peripheral registers, parameters, and the buffer descriptors
for each of the three serial communication controller (SCC) channels and the serial
communication port (SCP) channels. The 24 bit address bus is capable of accessing
up to 16 MB of data.
4.2.1.2
SYSTEM MEMORY ADDRESS MAP
The CPU has a 24 bit address bus when combined with UDS*/A0. The address bus
is a bi-directional, three state bus capable of addressing 16 MB of data that is configured
as 16 bits per word (including the IMP internal address space). Each of the four
programmable chip-select lines has two registers that define the starting address
of a particular address space and the block size.
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SECTION 4 THEORY OF OPERATION
4.2.1.3
PROGRAMMABLE READ-ONLY MEMORY
The CPU subsystem has two 512 K x 8 bit programmable read-only memory (PROM)
memory devices that provide a total of 1024 KB. The PROM space is expandable up
to 2 MB. The PROM memory devices operate off the 3.3 VDC supply. The CPU chip-select
0 pin (CS0*), is connected to the PROM chip-enable (CE*) pin (signal CSROM*). This special
chip-select signal can support bootstrap operation after reset.
The interface to the CPU is the 16 bit data bus, and a 19 bit address bus. The address
bus is connected to the ADDR<19:1> lines, and the data bus is connected
to the DATA<15:0> lines.
4.2.1.4
STATIC RANDOM ACCESS MEMORY
There are two 512 K x 8 bit CMOS static random access memory (SRAM) devices that
provide a total of 1024 KB of data memory. During an SRAM read or write cycle, the
chip-enable (CE*) is controlled by the CPU chip-select pin 1 (CS1*, signal name (CSRAM*)).
The SRAM space is expandable up to 2 MB. The SRAM operates off the 3.3 VDC supply.
The CPU subsystem includes the additional SRAM for video buffer and real-time clock.
4.2.1.5
CONTROL LOGIC
The CPU PWA uses field programmable gate arrays (FPGA) that are high density,
high speed, I/O intensive general purpose devices. They are used to implement all digital
control functions, including memory-map address decoding, memory read-write enable,
direct memory access (DMA) request, I/O status signals, chip-select control, motor control,
sensor select, and power up/system reset control.
4.2.1.6
LCD CONTROLLER
The liquid crystal display (LCD) controller is used to interface the LCD to the CPU.
The device displays layered text and graphics, scrolls the display in any direction,
and partitions the display into multiple screens. It stores bit-mapped graphic data
in ‘external frame buffer memory. The display controller functions include transferring
data from the controlling microprocessor to the buffer memory, reading memory data,
converting data to display pixels, and generating timing signals for the buffer memory
and LCD panel. The LCD controller accesses 32 KB of frame buffer SRAM (video)
via the controller’s video address and data busses (VA<14:0> and VD<7:0>). The LCD
controller external clock frequency is 8 MHz. The LCD controller and the display memory
are operated off the 3.3 VDC supply. The output signal levels are shifted up to 5 VDC
by buffers for interface with the 5 VDC LCD panel.
The interface to the CPU is through the lower 8 bits of the data bus that is connected
to DATA<7:0> lines, address line A1, and LCD chip-select signal CSLCD* (CS2*).
This controller is also configured as 8080 family compatible interface device
with all the control signals, such as WRLCD* (WR*) and RDLCD* (RD*), generated
by the FPGA logic.
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4.2
ELECTRONIC SUBSYSTEM OVERVIEW
4.2.1.7
LCD BACKLIGHT CONTROL
The LCD panel is backlit by a cold cathode fluorescent tube (CCFT) lamp. The CCFT lamp
requires 300 Vrms to operate; a current controlled DC-to-AC voltage inverter circuit is used
to deliver a current regulated sine wave to the lamp. A switching regulator regulates
the CCFT current by monitoring feedback pin 3, and varies its output duty cycle to drive
a DC/AC inverter. Intensity control is achieved by superimposing a DC control signal with
the feedback signal. The DC control signal is sourced by a voltage divider consisting
of a digitally controlled non-volatile potentiometer and three series diodes.
The CPU can adjust LCD backlight intensity by selecting the digitally controlled
non-volatile potentiometer and controlling TUBU/D and TUBINC* signals.
The potentiometer has a five bit up/down counter with non-volatile memory. It is used
to store one of 31 settings of the potentiometer. Each count represents 323 Ω with a range
of 323 to 10 KΩ. The current counter value is stored in non-volatile memory after CSTUB*
is returned high while the TUBINC* input is also high. The current counter value
is not stored if CSTUB* is returned high and TUBINC* is low. The CCFT intensity is directly
proportional to the CCFT current, where 0 mArms is minimum intensity and 5 mArms
is maximum intensity. The CCFT current is inversely proportional to the counter value.
4.2.1.8
LCD CONTRAST CONTROL
A digitally adjustable LCD bias supply is used to control the LCD contrast over a range
of -24 to -8 VDC. It is digitally adjustable in 64 equal steps by an internal digital-to-analog
converter (DAC). The CPU provides two signals, LCDADJ (ADJ) and LCDCTL (CTL),
to interface with this device. On power up or after a reset, the counter sets the DAC output
to the mid-range value. Each rising edge of LCDADJ increments the DAC output.
When incremented beyond full scale, the counter rolls over and sets the DAC
to the minimum value. Therefore, a single pulse applied to LCDADJ increases the DAC
set point by one step, and 63 pulses decrease the set point by one step.
4.2.1.9
REAL-TIME CLOCK
The watchdog timekeeper chip includes a complete real-time clock/calendar (RTC),
watchdog timer, alarm, and interval timer. The time/date information includes
hundredths of seconds, seconds, minutes, hours, date, month, and year. The date
at the end of the month is automatically adjusted for months with less than 31 days,
including correction for leap year. The watchdog timekeeper operates in either 24-hour
or 12-hour format with an AM/PM indicator. The device can be programmed to set up
an interval timer, and it can generate an alarm every day, hour, or minute. These alarm
functions may be used to schedule real-time related activities. A parallel resonant
32.768 kHz crystal oscillator drives the internal time base.
The external interface is a separate (non-multiplexed) 8 bit data bus and 6 bit address
bus, with a contiguous address space of 64 bytes. When system power is turned off,
a battery voltage input is available that makes the RTC data non-volatile. The address bus
is connected to the ADDR<6:1> lines, and the data bus is connected to DATA<7:0> lines.
Since the CPU accesses are 16 bits wide, the RTC data is on the lower byte of the word.
The RTC chip-enable pin (CE*) is active low enabled for read and write operations.
It is driven by the FPGA control logic, chip-select RTC signal (CSRTC*) that involves
address decoding circuitry.
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SECTION 4 THEORY OF OPERATION
4.2.1.10
VOLTAGE MONITOR WATCHDOG TIMER
It is important to protect the system during power transitions, and the CPU is reset after
the VCC power supply is applied. The microprocessor supervisory circuit generates
an automatic reset output during power up, power down, or brownout conditions.
When the VCC falls below the reset threshold voltage of 2.9 VDC, the reset signal (RESET*)
goes low and holds the microprocessor in reset for approximately 200 ms after VCC rises
above the threshold. The supervisory circuit includes a chip-select inhibit circuit that
is used to disable access to the real-time clock’s non-volatile SRAM during power
transitions and power down mode.
This device also provides a watchdog timer function to monitor the activity
of the microprocessor. To service the watchdog timer immediately after reset, the device
has a longer time-out period (1.6 second minimum) right after a reset. The normal time-out
period (70 ms minimum) is effective after the first transition of watchdog input (WDI) after
RESET* is inactive. If the microprocessor does not toggle WDI within the time-out period,
both RESET* and watchdog out (WDO*) outputs are asserted low. The RESET* remains
active low for a minimum of 140 ms and it resets the CPU. The WDO* remains low as long
as the WDI remains either high or low for longer than the watchdog time-out period.
After a reset, the software reads this memory-mapped bit to determine if the latest reset
was a watchdog time-out.
4.2.1.11
ANALOG-TO-DIGITAL CONVERTER
The analog-to-digital converter (ADC) monitors the proximal pressure sensor,
distal pressure sensor, proximal air sensor, distal air sensor, battery charge/discharge
current, battery voltage, buzzer test signal, LCD contrast voltage, CCFT test signal,
and two chopper motor drive reference voltages. The ADC is an advanced 10 bit accurate,
11 channel, switched-capacitor, successive-approximation device. It has three inputs
and a three-state output (chip-select, I/O clock, address input, and data out) that provide
a direct four-wire interface to the serial communication port of the CPU. The ADC
is designed to be used in conjunction with multiple serial devices on a common bus;
consequently, the data-out pin is driven only when the chip-select (CS*) pin is asserted.
Figure 4-2 illustrates the serial interface between the ADC and the CPU.
In addition to a high-speed ADC and versatile control capability, this device has an on-chip
14 channel multiplexer that can select any one of 11 analog inputs or any one of three
internal self test voltages. The sample-and-hold function is automatic.
The end-of-conversion (EOC) output goes high to indicate that conversion is complete.
The CPU polls the EOC signal.
Channel selection and conversion results are transferred through the SCP pins.
A serial transfer synchronizing clock (SPCLK) must be fed into the I/O clock input pin
when the CS* pin is driven low. The address to be converted is serially transmitted into
the address pin, and the conversion results are serially shifted out the data-out pin.
Typical access time is 21 µsec. The APP PWA is the source of the 2.5 VDC reference voltage.
The analog inputs are selected by the channel multiplexer according to the input address
(see Table 4-1). The input multiplexer is a break-before-make type to reduce input-to-input
noise injection resulting from channel switching.
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Plum A+3 Infusion System
4.2
ELECTRONIC SUBSYSTEM OVERVIEW
U4
CPU
A1
A2
A3
A4
ANALOG
INPUTS
I/O
CS*
A0
I/O CLOCK
SPCLK
ADDRESS
SPTXD
DATA OUT
SPRXD
A5
EOC
SCP
I/O
(OR INTERRUPT)
A6
A7
A8
REF+
A9
2.5V
REF-
A10
GND
GANA
GDIG
Figure 4-2.
Serial Interface to ADC
Table 4-1.
Analog Inputs
Signal Name
Analog Input
Address (hex)
PRPRS
A0
$00
Proximal pressure sensor
DIPRS
A1
$01
Distal pressure sensor
PXAIR
A2
$02
Proximal air sensor
DIAIR
A3
$03
Distal air sensor
IBATT
A4
$04
Battery current
VBATT
A5
$05
Battery voltage
BUZTST
A6
$06
Buzzer test voltage
LCDTST
A7
$07
LCD contrast test voltage
TUBTST
A8
$08
CCFT intensity test voltage
MI_STA
A9
$09
Motor current A control
MI_STB
A10
$0A
Motor current B control
$0B
(Vref(+) - Vref(-)) / 2
$0C
Vref(-)
$0D
Vref(+)
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Description
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SECTION 4 THEORY OF OPERATION
4.2.1.12
DIGITAL-TO-ANALOG CONVERTER
The dual 8 bit digital-to-analog converter (DAC) generates two analog signals to control
the phase A and phase B motor coil currents. The interface between the DAC device
and the CPU is the 8 bit data bus that is connected to DATA15:8. All the control signals
for this DAC are generated by FPGA logic devices. Buffer amplifier/ground compensation
circuits condition the DAC outputs.
4.2.1.13
FRONT PANEL KEYPAD MATRIX
A 5 x 5 membrane switch keypad matrix is located on the front panel. The keypad column
lines (COL4:0) are driven by open collector type memory mapped input ports, while
the keypad row lines (ROW4:0), are read by memory mapped input ports (see Table 4-2).
The keypad strobing, scanning, and switch de-bouncing is accomplished by software.
The keypad interface is designed with ESD protection.
Table 4-2.
Keypad Map
COL 0
COL 1
COL 2
COL 3
Row 4
Softkey 1
Softkey 2
Softkey 3
Softkey 4
Row 3
Start
1
2
3
Row 2
Stop
4
5
6
7
8
9
[]
Clear
0
.
Silence
Row 1
Row 0
On/Off
COL 4
[]
4.2.1.14
FRONT PANEL [ON/OFF] KEY
The [ON/OFF] key on the front panel provides a start up (STRTUP) signal to wake
up the power supply when the system is shutdown. When activated during normal
operation, the [ON/OFF] key interrupts (STRUPD*) the CPU, signaling a request
for shutdown.
4.2.1.15
FRONT PANEL LED INDICATORS
The CPU drives the three light emitting diode (LED) indicators embedded in the front panel.
Two memory mapped I/O signals activate the two LED lights used to indicate which
channel is in delivery mode (LEDAE*, LEDBE*). The AC power on LED indicates the status
of AC power (LEDAC) and that the system is in the battery charge mode. A buffered AC
on signal (BACON) drives the LED and is active only when AC power is present.
4.2.1.16
KEYPAD LOCKOUT INTERFACE
A lockout switch (SW1) on the peripheral interface PWA locks the front panel keypad for all
three infusers. A memory mapped input port (LOTSW*) reads the switch. The switch serves
as a lockout request and software performs the lockout.
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Plum A+3 Infusion System
4.2
ELECTRONIC SUBSYSTEM OVERVIEW
4.2.1.17
NURSE CALL INTERFACE
A nurse call relay switch on the peripheral interface PWA indicates alarm conditions
to a remote operator. A memory-mapped output signal (NURSE) activates the relay during
alarm conditions. The relay has both normally-open and normally-closed contacts.
A jumper on the peripheral interface board selects the contact type. The factory setting
is normally-open.
4.2.1.18
AUDIBLE INDICATORS
There are two audible indicators on the CPU subsystem. Three loud, main audible
indicators are mounted on the main chassis. This main alarm is used to alert the operator
to alarm conditions. A keypad beeper, with lower power and a distinctly different tone,
is used to provide audible feedback to the operator. The keypad beeper is driven
by a memory-mapped output (KEYALM). It is used to indicate keypad activation,
and confirmation to the operator.
The main alarm has an adjustable volume control on the peripheral interface PWA,
mounted on the rear of the device. The main alarm can be activated by either
a memory-mapped control (MAINALM), the reset pulse(s), or by a power failure alarm latch.
The main alarm will sound a chirp for every reset pulse sent by the watchdog timer IC.
Continuous chirping indicates a stuck processor.
The alarm is activated continuously during power failure. If the control software does not
shut down power in a proper sequence, a latch on the CPU PWA, powered by a backup
supply (0.1 F supercap), will activate a continuous alarm. This continuous alarm sounds
until either the backup supply is discharged or the user resets the latch by pressing
the [ON/OFF] key. Reliable operation of the main alarm is assured by software monitoring
of a buzzer test signal (FBUZTST) via the ADC.
4.2.1.19
BARCODE READER INTERFACE

Note: The barcode reader feature will not be present on later versions
of the Plum A+3.
The CPU communicates with a barcode wand that is connected to the peripheral PWA
from the rear of the infuser. The barcode wand reads and decodes a Code 128 barcode
symbology and outputs the barcode data via an RS-232 port using an asynchronous,
serial ASCII format.The software controls power to the barcode reader and to the interface
circuits via memory-mapped outputs BARPWR and COMPWR*. The barcode reader
is isolated from the main system by an optical data path on the peripheral PWA
and an isolated power supply.
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SECTION 4 THEORY OF OPERATION
4.2.1.20
DATAPORT INTERFACE
The CPU communicates with an external computer by way of a DataPort interface.
The DataPort interface provides for remote monitoring of up to four infusers using a host
computer with a modified RS-232-D serial interface. Infusers are either connected directly
to the host or in a daisy chain configuration using junction boxes that provide a 5 bit hard
ID via DIP switches on the junction box. The DIP switches are buffered and read by the CPU
via the memory-mapped input/output (MMIO) port.
The DataPort system conforms to the EIA-232-D standard, with the following exceptions:
- DataPort uses non-standard DB-15 and 6 pin modular connectors in addition
to the standard DB-25 and DB-9 connectors
- With DataPort, more than one infuser is allowed on the line
- The minimum line impedance is 2 KΩ (EIA-232-D standard: 3 KΩ min.)
- The maximum line impedance is 30 KΩ (EIA-232-D standard: 7 KΩ max.)
- The maximum line capacitance is 13 nF (EIA-232-D standard: 2,500 pF)
The communications default is 1200 BAUD, no parity, 8 data bits and 1 stop bit. The BAUD
rate is selectable (1200, 2400, 4800, and 9600). The data format on the serial port
is a 10 bit frame with asynchronous start and stop. The CTS line is held high and the RTS
line is disconnected.
The DataPort is isolated from the main system by an optical data path on the peripheral
PWA and an isolated power supply.
4.2.1.21
POWER SUPPLY INTERFACE
The CPU subsystem interfaces the power supply subsystem by providing the MMIO signals
needed for power control and battery management. Additionally, the CPU subsystem
measures the battery terminal voltage and charge/discharge current via the ADC.
See Table 4-3 for CPU-power supply interface signals.
Table 4-3.
CPU-Power Supply Interface
Signal Name
Type
PWRHLD
D, O
Holds system power on
STRTUP
A, I
Startup pulse from the [ON/OFF] key
STRUPD*
D, I
Digital startup pulse, used as interrupt to the CPU
V3_3
P
3.3 V system power
V5_0/VANA
P
5 V analog and interface power
VMOT
P
Raw, unregulated charger voltage or battery voltage
V2_7
P
2.7 V backup power for RTC and non-volatile SRAM
VSC
P
Full time 5 V supply, backed up by supercap
V12_0
P
12 V, low current supply for audio alarm
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Description
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Plum A+3 Infusion System
4.2
Table 4-3.
ELECTRONIC SUBSYSTEM OVERVIEW
CPU-Power Supply Interface
Signal Name
Type
Description
OVRVLT*
D, I
Signal that indicates overvoltage, regulation problem on the power
supply main regulator
BACON
D, I
Buffered AC on signal
IBATT
A, I
Voltage proportional to integration of battery charge/discharge
current
VBATT
A, I
Divided battery terminal voltage
CHG*
D, O
Battery charger enable
VFLOAT*
D, O
Set the main regulator voltage to battery float charge level
ITGRST
D, O
Reset the charge current integrator
Legend:
P = Power A = Analog D = Digital I = Input O = Output
4.2.1.22
MECHANISM INTERFACE
The CPU subsystem provides the MMIO ports for interface to the mechanism subsystem,
in addition to the analog interface mentioned in Section 4.2.1.11 and Section 4.2.1.12.
See Table 4-4 for CPU-mechanism interface signals.
Table 4-4.
CPU-Mechanism Interface Signals
Signal Name
Type
MI_STA
A, O
Motor current set for phase A
MI_STB
A, O
Motor current set for phase B
GDAC
A, O
Ground signal from chopper (for compensation)
M_PHA
D, O
Motor phase A
M_PHB
D, O
Motor phase B
M_SEL1, M_SEL0
D, O
Motor select bits
FLCAME
D, O
I/O and L/S cam flag sensors enable
FLPINE
D, O
L/S pin motion detectors enable
FLPLE
D, O
Plunger motor sensor pair enable
FLLS_C
D, I
Flag, L/S valve cam sensor
FLIO_C
D, I
Flag, I/O valve cam sensor
FLLS_A
D, I
Flag, L/S valve A pin detector
FLLS_B
D, I
Flag, L/S valve B pin detector
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Description
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SECTION 4 THEORY OF OPERATION
Table 4-4.
CPU-Mechanism Interface Signals
Signal Name
Type
FLPLRO
D, I
Flag, plunger rotation sensor
FLPLTR
D, I
Flag, plunger translation sensor
PXPRE
D,O
Proximal pressure sensor enable
PXPRS
A, I
Proximal pressure sensor
DIPRE
D, O
Distal pressure sensor enable
DIPRS
D, O
Distal pressure sensor
PXARE
D, O
Proximal air sensor enable
PXAIR
A, I
Proximal air sensor
DIARE
D, O
Distal air sensor enable
DIAIR
A, I
Distal air sensor
CASPR*
D, I
Cassette present
CASS2*, CASS1*, CASSO*
D, I
Cassette type coding: Macro (111), Micro (010)
All others are invalid
SPCLK
D, O
SCP clock output
SPRXD
D, I
SCP receive data
SPTXD
D, O
SCP transmit data
CSSEP*
D, O
Chip select, EEPROM
V5_0
P
5 V supply for interface power
V3_3
P
3.3 V supply for logic power
GDIG
P
Digital ground
VANA
P
5 V supply for analog power
GANA
P
Analog ground
VMOT, GMOT
P
Motor power is directly from power supply PWA
V2_5
A, I
Legend:
430-95424-003
Description
Reference voltage for ADC and DAC
P = Power A = Analog D = Digital I = Input O = Output
4 - 12
Plum A+3 Infusion System
4.2
ELECTRONIC SUBSYSTEM OVERVIEW
4.2.2
POWER SUPPLY SUBSYSTEM
The power supply subsystem provides DC power to system circuits and interface software
controlled power and battery management.
The power supply subsystem provides for the following functions:
- Main switching regulator
- Power control
- AC power detection
- Battery charging circuitry
- Main regulator fault detection
- Battery terminal voltage measurement
- System power (secondary regulators)
- Battery charge/discharge
current measurement
- Auxiliary supplies
4.2.2.1
MAIN SWITCHING REGULATOR
The main source of power for the infuser is the AC line. The main switching regulator
is a pulse width modulated, AC-to-DC converter that provides the system an isolated DC
voltage of 6.9 VDC (or 7.5 VDC in battery charger boost mode). The main regulator
is preceded by line fuses F1 and F2, surge suppressor VR1, and a line filter. The bridge
rectifier U14 and capacitors C52 and C53 provide the DC voltage required for the switching
circuit. Voltage regulator U13 provides the pulse width modulator (PWM) device U12
startup supply voltage. After startup, supply voltage for U12 is supplied by half wave
rectifier circuitry CR14, R76, and C51.
The PWM oscillation frequency is approximately 40 kHz, determined by external resistor
R72 and capacitor C45. U12 controls the power delivered by varying the duty cycle
of MOSFET Q9 that drives T2. A half-wave rectifier rectifies the transformer’s secondary
voltage that provides the raw DC voltage for the battery charger and system power.
There following three feedback mechanisms maintain control: a main loop for normal
control, a secondary loop for overvoltage protection, and a current limit loop.
4.2.2.1.1
Main Loop
The main loop uses an optical feedback path to regulate the charger voltage (BATPOS)
at 6.9 VDC (except during boost charge, when the limit is raised to 7.5 VDC by software
control of the VFLOAT* line). A shunt regulator and opto-isolator provide feedback
to the PWM error amplifier.
4.2.2.1.2
Secondary Loop
Diode CR10 and opto-isolator U10 provide overvoltage protection. CR10 conducts
and activates U10 when secondary voltage exceeds approximately 10 VDC. The duty cycle
of U12 is reduced until the excessive voltage is removed.
Technical Service Manual
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430-95424-003
SECTION 4 THEORY OF OPERATION
4.2.2.1.3
Current Limit Loop
The current limit loop is activated when the primary current, sensed by R71, exceeds 3 A.
Resistor R70 and capacitor C46 filter the voltage across R71 and feed it back to the current
sense input (1.5 VDC threshold) of U12. The duty cycle of U12 is reduced until the excessive
load is removed.
4.2.2.2
MAIN REGULATOR FAULT DETECTION
If the switching regulator’s main loop fails, the secondary voltage limit loop takes over.
However, the battery charger and motors must be disabled, and an alarm must be
generated. A comparator is used to monitor the raw DC (+BUSS) for overvoltage. A 3.3 VDC
logic signal (OVRVLT*) is provided to the CPU subsystem.
4.2.2.3
SYSTEM POWER
Along with the unregulated VMOT supply, a secondary switching regulator provides
system power. The secondary switching regulator includes IC U4, transformer T1,
and transistors Q4 and Q5. The regulator is a triple output, wide supply range, fly-back
converter that provides regulated 3.3 VDC, 5 VDC, and 12 VDC outputs from the five winding
transformer T1. The regulator operates over an input range of 4 VDC to 10 VDC and provides
output current limit as well as voltage overshoot limit. Primary feedback is metered
through a bias arrangement on transistor Q3. A Schottky rectifier diode CR4 provides
feedback in the event of V3_3 or V12_0 failure, and transistor Q10 provides feedback in the
event of V5_0 failure. The positive terminal of the battery provides the raw DC voltage,
VMOT, for the motors and backlight of the display.
4.2.2.4
AUXILIARY SUPPLIES
The power supply subsystem provides full time 5 VDC and 2.7 VDC supplies that are active
when battery or AC voltage is present. The full time 5 VDC supply (VSC) uses a linear low
dropout voltage regulator U6, whose power source is directly from the battery and is backed
up by a 0.1 F capacitor. VSC is used for the ON/OFF switch and a power failure alarm
latch. The full time 2.7 VDC supply (V2_7) is derived from VSC and is used to supply
the ultra-low current needed to power the real-time clock and non-volatile SRAM during
shutdown.
4.2.2.5
POWER CONTROL
The infuser will operate in one of the following three modes: normal, standby, or shutdown.
During normal operation, the user interface is active and either on battery or AC line
power. During standby mode the user interface is inactive while the CPU is still operating,
servicing the battery management and waiting for a startup interrupt. Shutdown mode
is when system power is off. Shutdown mode only occurs during battery operation;
otherwise, +BUSS holds the system power on.
430-95424-003
4 - 14
Plum A+3 Infusion System
4.2
ELECTRONIC SUBSYSTEM OVERVIEW
The infuser is activated when the [ON/OFF] key is pressed or the AC line is plugged in.
The [ON/OFF] key activates the STRTUP signal, triggering a three second one-shot circuit
that will temporarily turn the system power on. This three second one-shot period allows
the CPU enough time to power up, initialize, and turn on the PWRHLD signal. The CPU
monitors the STRTUP signal, via interrupt, to signal a user request for turning off
the infuser.
Figure 4-3 illustrates the system startup/shutdown sequence while battery powered.
System power is always on while AC powered.
STRTUP
3 SEC
ONE-SHOT
V3_3,V5_0, V12V
PWRHLD
Figure 4-3.
System Startup and Shutdown Timing, Battery Powered
4.2.2.6
BATTERY VOLTAGE MEASUREMENT
The battery terminal voltage (BATPOS - BATNEG) is measured with a differential amplifier
consisting of U1, R1, R2, R4, R7, and R8. It has a gain of 0.317 to generate a single ended
VBATT signal. The VBATT signal is then provided to the CPU A/D converter as input
for the battery management algorithms.
4.2.2.7
BATTERY CHARGE/DISCHARGE CURRENT MEASUREMENT
The battery management algorithms measure battery charge/discharge current for battery
capacity estimation and charger control. The charge/discharge current is measured
by integrating the voltage across current sense resistor R57. An operational amplifier
(op-amp) integrator circuit, consisting of U2, C5, R12, R13, R19, and R20, provides
a voltage proportional to the integration of battery current (IBATT) over a CPU controlled
measurement period. The IBATT signal is fed to the CPU A/D converter, where it is sampled
at the end of the measurement period. The battery management algorithm further
accumulates the charge/discharge current for battery capacity estimation.
The op-amp integrator is reset by the CPU system at the beginning of each measurement
period by parallel analog switches U3, controlled by the CPU’s ITGRST signal. The battery
management algorithm periodically calibrates the op-amp integrator.
Technical Service Manual
4 - 15
430-95424-003
SECTION 4 THEORY OF OPERATION
4.2.2.8
BATTERY CHARGER
The software battery management algorithm controls the battery charger. The charging
scheme is a current limit/two stage voltage limit charger. The charge current is limited
to 1.3 A and the voltage is limited to either 6.9 VDC or 7.5 VDC.
The source of the charge current is power MOSFET transistor Q7 operating in the linear
mode. Charge current passes through a current sense resistor R57, where it develops
a feedback signal for the charger control amplifier consisting of U7, Q6, and associated
parts. The feedback signal is compared against a 2.5 VDC voltage reference U8. A 0.5 A fuse
protects against damage due to a short circuit. The battery management algorithm
maintains on/off control of the charger by the charger enable signal CHG*. When set high,
CHG* activates a comparator U7 that overrides the feedback signal and disables
the charger. Excessive voltage on the BATNEG terminal indicates there is a shorted battery
cell, and will disable the charger through the same comparator.
4.2.3
MECHANISM SUBSYSTEM
The mechanism subsystem includes the electronics and electromechanical components
that interface with the pumping mechanism.
The mechanism subsystem provides the following functions:
- Chopper motor drive for three stepper motors (plunger, L/S valve, I/O valve)
- Four motor position sensors (flag detectors)
- Precision voltage reference
- Two air sensors (distal, proximal)
- Two pressure sensors (distal, proximal)
- Cassette presence and type detection
- Serial electrically erasable PROM (EEPROM)
See Table 4-4 for mechanism interface signals.
4.2.3.1
MOTORS/MOTOR DRIVE
The infuser uses three stepper motors for pumping; one for fluid displacement and two
for cassette valve actuation. The stepper motors are driven, under step-by-step control
from software, by a unipolar chopper drive.
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Plum A+3 Infusion System
4.2
ELECTRONIC SUBSYSTEM OVERVIEW
4.2.3.1.1
Stepper Motors
Each motor is named by its function, as follows:
- Plunger motor for driving the plunger screw
- I/O valve motor for moving the input-output valve pins
- L/S valve motor for moving the line select valve pins A and B
All three motors are four phase stepper types. One electrical revolution is accomplished
after four motor steps (phases) are completed. The step-angle (the number of steps
per shaft revolution) resolutions are 3.6° /step (100 steps/rev) for the plunger motor,
and 7.5° /step (48 steps/rev) for the I/O and L/S valve motors.
The unipolar motor windings have a center tap connected on each of the two coils as shown
in Figure 4-4. Unidirectional current enters the center tap and is steered to one end
of the coil or the other end by the driver electronics, creating positive or negative flux lines
in the motor coil. With two coils each with a choice of flux polarity, four electrical
combinations or phases are possible.
A
ACOM
A
B
Figure 4-4.
BCOM
B
Stepper Motor Coils
4.2.3.1.2
Chopper Motor Drive
The infuser stepper motor drive is a chopper drive that is a pulse width modulation
of the coil current in each motor winding. Current is switched on and off to maintain
a predetermined coil current independent of supply voltage and motor speed. The motor
winding inductance acts as a filter to smooth out the switching currents, slowing
the current rise when turned on and storing a decaying current when turned off.
Each motor coil is modulated independently, allowing different coil currents in the two
motor windings. The coil current is sensed and compared to a reference input for each
winding. Modulation circuits correct for any error between the sensed current
and the reference. This reference input can be changed to set a different coil current.
Technical Service Manual
4 - 17
430-95424-003
SECTION 4 THEORY OF OPERATION
4.2.3.2
MOTOR POSITION SENSORS
Motor position is estimated by counting the motor steps, relative to a position reference.
Optical switches and flags serve as position references that are used to find the motor
home positions and to verify proper motion. Flag positions are anticipated by software.
Optical switch flag sensors are used for tracking the following:
- Plunger motor rotational position (coupler flag)
- Plunger translational (linear) position
- I/O valve motor rotational position (cam flag)
- L/S valve motor rotational position (cam flag)
Each optical switch consists of an infrared LED that shines through a rectangular
aperture, across a slot, to illuminate a photo-transistor. The photo-transistor is activated
as long as the beam is on and not blocked (by a flag in the slot). The optical switches
are distributed throughout the mechanism, near their associated flags. The motor
rotational optical switches are mounted on the driver PWA along with the control circuitry.
The plunger translational optical switch is mounted remotely on the switch PWA.
The switches are used intermittently to save power.
There are two control signals that enable associated switch pairs, as follows:
- FLCAME
flag valve motor cam sensor enable
- FLPLE
flag plunger motor rotation and translation sensors enable
Each of these control signals enables a constant current source that turns on the
associated switch’s infrared LEDs. The photo transistor states are sensed by Schmidt
trigger inverters (U11 on driver PWA) that provide a 3.3 V logic high when the optical path
is blocked or a logic low when the optical path is clear. The Schmidt trigger output is high
when the sensor is disabled.
The following output signals are provided to the CPU subsystem:
- FLIO_C
flag I/O valve motor cam sensor
- FLLS_C
flag L/S valve motor cam sensor
- FLPLRO
flag plunger motor rotation sensor
- FLPLTR
flag plunger motor transition sensor
4.2.3.3
V2_5 REFERENCE VOLTAGE
A precision 2.5 VDC reference voltage is generated on the APP PWA for use by the pressure
sensor excitation circuits, the air sensor amplifier circuits, and the ADC and DAC reference
voltage. The precision 2.5 VDC reference is buffered by a voltage follower. The signal name
is V2_5.
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Plum A+3 Infusion System
4.2
ELECTRONIC SUBSYSTEM OVERVIEW
4.2.3.4
AIR SENSORS
The mechanism subsystem includes two air sensors, used to detect air passage into
(proximal) or out of (distal) the cassette. Both sensors are piezoelectric crystal transmitter
receiver pairs. Liquid between the transmitter and receiver will conduct the ultrasonic
signal, while air will not (see Figure 4-5).
XTL
TX
VSO
VCO/PLL
CPU
Figure 4-5.
G_RX
G_TX
OUTPUT
AMP
A/D
XTL
RX
PEAK
DETECTOR
Air Sensor Block Diagram
4.2.3.4.1
Transmitter Circuitry
The transmitter circuitry consists of a voltage sweep oscillator, a voltage-controlled
oscillator (VCO), and a transmitter amplifier, and are located on the APP PWA.
The voltage sweep oscillator circuit oscillates at approximately 12 kHz at 50 percent duty
cycle. The output of the sweep oscillator is between +2 VDC and +3 VDC, and is used
to sweep the VCO. The VCO sweeps through the sensor’s peak coupling frequency
that is between 3 MHz and 6 MHz. A resistor and capacitor are used to configure the VCO
center frequency. The VCO is enabled when the CPU asserts either DIARE or PXARE
control signals.
The transmitter amplifier consists of a push-pull, emitter-follower, complementary pair
of transistors. The transmitter amplifier drives both proximal and distal sensors
simultaneously.
Technical Service Manual
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430-95424-003
SECTION 4 THEORY OF OPERATION
4.2.3.4.2
Receiver Circuitry
When the cassette’s test port is filled with fluid, the transmitted signal will be coupled
to an identical piezoelectric crystal, where it is amplified and detected by the receiver
circuitry. The receiver circuitry consists of an amplifier, a peak detector, and an adjustable
gain buffer stage. There is a separate, symmetrical receiver circuit for each channel
(proximal and distal). Component references (called out in this design description)
will be made to the distal channel only.
The first amplifier includes two, directly coupled common emitter stages, biased from
the V2_5 supply. DIARE and PXARE are used to enable the distal and proximal sensors,
respectively. The detector stage consists of an emitter follower, charging a 400 microsecond
time constant, refreshed every 40 microseconds (twice per VCO sweep).
The peak detector output is buffered by an op-amp configured as a basic non-inverting
amplifier with a trimming potentiometer (R31) for gain adjustment. Each sensor has
an independent gain adjustment. The two air sensor, gain-trimming potentiometers
are accessible for calibration in an assembled mechanism.
The following final signals are read by the CPU subsystem via the ADC:
- PXAIR
proximal air sensor output
- DIAIR
distal air sensor output
4.2.3.5
PRESSURE SENSORS
The mechanism subsection contains two strain gauge-type pressure sensors,
one at the proximal and the other at the distal cassette ports. Electrically, the strain gauge
is a Wheatstone bridge made of four strain gauge resistors. When the bridge is electrically
excited, the bridge will output a millivolt level signal proportional to the applied pressure.
The output signal is amplified and offset adjusted before being read by the ADC.
Each pressure sensor circuit includes an excitation voltage supply, sensor amplifiers,
and a low pass filter. The pressure sensor circuitry is on the APP PWA. Each of the two
channels has an identical topology, but different gain and filter response.
A block diagram of this circuit is shown in Figure 4-6. Component references are made
to the distal channel only.
430-95424-003
4 - 20
Plum A+3 Infusion System
4.2
PRESSURE
SENSOR
ENABLE
(FROM CPU)
ELECTRONIC SUBSYSTEM OVERVIEW
BRIDGE
EXCITATION
3.75 V
WHEATSTONE
BRIDGE
REFERENCE
2.5 V
DIFFERENTIAL
AMPLIFIER
AND OFFSET
ADJUST
OUTPUT
AMPLIFIER
AND FILTER
Figure 4-6.
PRESSURE
SIGNAL OUTPUT
(TO CPU)
Pressure Sensor Excitation and Amplifier Block Diagram
4.2.3.5.1
Bridge Excitation Supply
The bridge excitation voltage is 3.75 VDC, and is derived from the 2.5 VDC reference signal
(V2_5), gained 1.5 times by an amplifier. The CPU subsystem may independently enable
power to each pressure sensor bridge.
The following enable signals are active high 3.3 V logic level inputs:
- PXPRE
proximal pressure sensor enable
- DIPRE
distal pressure sensor enable
4.2.3.5.2
Amplifier and Low Pass Filter
The pressure sensor amplifiers include a high gain differential pre-amplifier, followed
by a second stage non-inverting amplifier with low gain. A trimming potentiometer
is adjusted to minimize any offset in the impedance of the bridge.
A two-pole filter is used to filter the pressure signals. The first pole is formed by a capacitor
(C39, multiplied by 230 due to Miller effect) and a Thevenin resistance (seen at U4-2).
The second pole is the RC filter at the ADC input that is located on the CPU PWA.
Output signals to the A/D converter in the CPU PWA are as follows:
- PXPRS
proximal pressure signal
- DIPRS
distal pressure signal
Technical Service Manual
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430-95424-003
SECTION 4 THEORY OF OPERATION
4.2.3.6
PRESSURE SENSOR CALIBRATION
Pressure sensors are calibrated for offset and gain during mechanism calibration.
A trimming potentiometer is used to adjust the initial, zero pressure offset. The proximal
and distal pressure sensors have independent offset adjustments. The final system gain
(cassette pressure to corrected amplifier output) is adjusted in software.
During mechanism calibration, each channel’s gain (amplifier output/cassette pressure)
will be measured, and stored in the serial EEPROM on the driver PWA.
4.2.3.7
CASSETTE TYPE/PRESENCE SELECTION
The mechanism subsystem includes four force sensing resistor (FSR) switches
that are coupled to the cassette. Three FSRs are used for cassette type decoding and one
is used for cassette present detection.
The FSR is a polymer thick film device that exhibits a decrease in resistance with any
increase in force applied to the active surface. The FSRs have a resistance that is either
very large (> 1 MΩ) or relatively small (< 100 KΩ). The large resistance is defined as a logical
‘0’, and the small resistance is defined as logical ‘1’. Each FSR is arranged in a voltage
divider configuration with a fixed resistor, followed by a comparator with hysteresis.
The comparator circuits are located on the CPU PWA. The comparators are designed to trip
as the FSR’s resistance falls below 120 KΩ.
4.2.3.8
SERIAL EEPROM
The driver PWA holds the 8 K x 8 bit, serial EEPROM that is used to store event, alarm,
malfunction, and calibration data specific to the pumping mechanism. It is accessed
through a serial peripheral interface (SPI) compatible interface that is a high-speed serial
interface to the CPU. The CPU PWA accesses this device through its SCP serial interface.
This interface is a subset of the SPI, and consists of clock (SPCLK), data in (SPRXD),
and data out (SPTXD) pins. This device is in the driver PWA to allow the calibration data
to stay with the mechanism.
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Plum A+3 Infusion System
4.3
PRINTED WIRING ASSEMBLIES
4.3
PRINTED WIRING ASSEMBLIES
Infusion system electronics are packaged into six printed wiring assemblies (PWA)
and several remote mounted peripherals (see Section 4.4). The following sections provide
a brief description of the functional interfaces of each PWA.
4.3.1
POWER SUPPLY PWA
The power supply PWA contains the following functions of the power supply subsystem:
- Main switching regulator
- Auxiliary supplies
- AC power detection
- Power control
- Main regulator fault detection
- Battery management
- System power
The power supply PWA is a four layer board with primarily surface mount technology (SMT)
components. The board is fully testable from the bottom side. An insulating tape covers
the back of the power supply PWA. Open system troubleshooting should be done under
battery power. If connection to the AC line is required, an isolation transformer should be
used since AC line potentials are present on the power supply PWA.
See Table 4-5 for power supply PWA interface connections.
Table 4-5.
Connector
Power Supply PWA Interface Connections
Type
Interface
P2
30 pin receptacle
Board-to-board connection to CPU PWA
J16
4 pin header
Motor power connection to driver PWA
J21
3 pin receptacle
AC power cord connection
J22
2 pin header
Battery cable connection
Technical Service Manual
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430-95424-003
SECTION 4 THEORY OF OPERATION
4.3.2
PERIPHERAL PWA
The peripheral PWA contains part of the CPU subsystem circuitry, including system
program and data memories (PROM and SRAM), and external communication interface
circuits. The peripheral PWA is designed to be field replaceable, to facilitate software
upgrades or additional external interfaces.
The peripheral PWA is a four layer board that includes the following: one ground plane,
one power plane, and two signal layers. In its initial configuration, all of the components
are mounted on the top side.
See Table 4-6 for peripheral PWA interface connections.
Table 4-6.
Connector
Peripheral PWA Interface Connections
Type
Interface
P1
96 pin receptacle
Board-to-board connection to CPU PWA
J26
15 pin D-sub
DataPort
J27
9 pin D-sub
Barcode reader connection
J28
3 pin phone jack
Nurse call jack
4.3.3
PERIPHERAL INTERFACE PWA
The peripheral interface PWA contains the following: part of the CPU subsystem circuitry
including system program and data memories (PROM and SRAM), external communication
interface circuits, and rear instrument user controls.
See Table 4-7 for peripheral interface PWA interface connections.
Table 4-7.
Connector
Peripheral Interface PWA Interface Connections
Type
Interface
P1
96 pin receptacle
Board-to-board connection to CPU PWA
J29
J30
50 pin plug
Board-to-board connection to peripheral PWA
J26
15 pin D-sub
DataPort
J27
9 pin D-sub
Barcode reader connection
J28
3 pin phone jack
Nurse call jack
430-95424-003
4 - 24
Plum A+3 Infusion System
4.3
PRINTED WIRING ASSEMBLIES
4.3.4
CPU PWA
The CPU PWA contains most of the CPU subsystem functions, with the exception of main
memory and communications ports that are located on the peripheral PWA. The CPU PWA
also accommodates system interconnect.
The CPU PWA is an eight layer board with the following: one ground plane, one power
plane, and six signal layers. The CPU PWA primarily contains SMT components.
Most of the components are on the top side, while the bottom side holds wave-solder
compatible SMT resistors and capacitors.
See Table 4-8 for CPU PWA interface connections.
Table 4-8.
Connector
CPU PWA Interface Connections
Type
Interface
J7
96 pin header
Connection to peripheral PWA
(CPU bus, rear panel I/O, and communication ports)
J2
30 pin header
Connection to power supply PWA
J3
50 pin SMT
Ribbon cable connection to driver PWA (mechanism)
J4
21 pin header
Front panel connector (keypad, LEDs, On/Off switch)
J5
14 pin SMT
Flat flex cable to LCD panel
J20
4 pin header
CCFT backlight connector
J24
2 pin header
Main audible alarm connector
4.3.5
DRIVER PWA
The driver PWA contains the mechanism subsystem’s motor drive circuitry, motor position
sensors, and serial EEPROM. The driver PWA is mounted in the mechanism sub-chassis.
The driver PWA is a four-layer PWB with the following: one ground plane, one power plane,
and two signal layers. The driver PWA primarily uses SMT components. Most of the
components are located on the top side of the board, while the bottom side holds
wave-solder compatible resistors and capacitors.
Technical Service Manual
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430-95424-003
SECTION 4 THEORY OF OPERATION
See Table 4-9 for driver PWA interface connections.
Table 4-9.
Connector
Driver PWA Interface Connections
Type
Interface
J7
6 pin header
Plunger motor
J8
6 pin header
Input/output motor
J9
6 pin header
Line select motor
J10
20 pin SMT
Flat flex cable to APP PWA
J11
50 pin header
Ribbon cable to CPU PWA
J12
6 pin SMT
FSR flex circuit
J13
4 pin header
Motor power, from power supply PWA
J14
8 pin SMT
Flat flex cable to switch PWA
4.3.6
SWITCH PWA
The switch PWA contains the plunger translation position sensor that is one of four
position sensors in the system. The switch PWA is located at the side of the mechanism
sub-chassis, and connects to the driver PWA.
4.3.7
APP PWA
The APP (air, pressure, and pin) PWA is mounted in the mechanism sub-chassis,
and contains the following mechanism subsystem circuitry:
- Proximal and distal air sensors and circuitry
- Proximal and distal pressure sensor amplifiers and excitation
- V2_5 precision voltage reference
- Pin detector optical switch module
The APP PWA is a four layer board with the following: one ground plane, one power plane,
and two signal layers. The APP PWA uses SMT components, mounted on both sides
of the board. The air sensors and the pin detector module are board mounted.
See Table 4-10 for APP PWA interface connections.
Table 4-10.
Connector
APP PWA Interface Connections
Type
Interface
J15
20 pin SMT
Flat flex cable to driver PWA
J11
10 pin SMT
Pressure sensor connector
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Plum A+3 Infusion System
4.4
REMOTE MOUNTED PERIPHERALS
4.4
REMOTE MOUNTED PERIPHERALS
Remote mounted peripherals include the LCD, sealed lead acid battery, and barcode reader
(BCR) wand.
4.4.1
LCD
The infuser uses a graphic LCD module with a CCFT. The CCFT provides a backlight
source for the LCD. The LCD requires a nominal -16 VDC supply for contrast control
that is controlled by the CPU. The infuser’s graphic display data is shifted out to the LCD
by the CPU LCD controller that interfaces directly with the CPU (see Section 4.2.1.6).
The display is configured as a 240 x 240 dot matrix with a viewing angle
of approximately 60° .
4.4.2
SEALED LEAD ACID BATTERY
The infuser uses a nominal 6 VDC rechargeable sealed lead acid battery with a 4 amp-hour
capacity.
4.4.3
BARCODE READER WAND

Note: The barcode reader feature will not be present on later versions
of the Plum A+3.
The barcode reader wand connects to the BCR port J27 on the peripheral PWA. The BCR
wand interfaces through the infuser’s optically isolated, TTL logic level, asynchronous
interface. The BCR wand is also capable of interfacing at RS-232 levels. The infuser
provides an isolated +5 VDC regulator to power the BCR wand. When the LED at the tip
of the BCR wand is swiped across a barcode label, the reflected light is scanned
and processed. After a successful scan, the data is sent over the communication interface
to the CPU.
4.5
MECHANICAL OVERVIEW
The principal mechanical elements of the infuser include the cassette and the mechanism
assembly. When a cassette is locked into the operating position and the [ON/OFF] switch
is pressed, the infuser performs a self test to verify the integrity of the internal systems.
The operation of the mechanism assembly moves a plunger, causing a pumping action.
A valve motor selects the A or B valve, depending on the command. An additional valve
motor alternately opens and closes an inlet valve and outlet valve to control fluid flow
through the cassette pumping chamber.
The following sections detail the cassette and the mechanism assembly.
Technical Service Manual
4 - 27
430-95424-003
SECTION 4 THEORY OF OPERATION
4.5.1
CASSETTE
The cassette (see Figure 4-7 and Figure 4-8) operates on a fluid displacement principle
to volumetrically deliver fluid. See the system operating manual for a description
of the major cassette functions.
The pumping cycle begins when the outlet valve is opened and the inlet valve is closed.
The plunger extends to deflect the cassette diaphragm and expel fluid. At the end
of the pumping stroke, the outlet valve is closed, the inlet opens, the appropriate A or B
valve opens, and the plunger retracts to allow fluid to refill the pumping chamber.
After the pumping chamber is filled, the inlet and outlet valves are reversed, the A and B
valves are closed, and the cycle repeats.
The cassette contains an upper air trap chamber and a pumping chamber. The two
chambers are separated by an inlet valve and operate together to detect air. The air trap
chamber receives fluid from the intravenous (IV) container through either the A or B valve.
The air trap chamber collects air bubbles from the IV line and container to prevent them
from entering the pumping chamber and can collect a substantial amount of air.
A proximal air-in-line sensor (bubble detector) is located between the A/B valves
and the upper air-trap chamber. The proximal air-in-line sensor detects air entering
the upper air-trap chamber and initiates an audible alarm if the predetermined air
collection threshold is exceeded. Similarly, a second air-in-line sensor located distal
to the pumping chamber initiates an audible alarm if a predetermined amount of air
is detected.
The pumping chamber receives fluid from the upper air-trap chamber through an inlet
valve. A pressure sensor located in the upper air-trap chamber monitors pressure
on the proximal side of the cassette. When the diaphragm covering the pumping chamber
is deflected by the plunger, the pumping chamber expels fluid through an outlet valve.
A pressure sensor located distal to the pumping chamber monitors pressure on the distal
side of the cassette.
A flow regulator is incorporated into the cassette distal end. This flow regulator is used
to manually control flow when the cassette is not inserted in the infuser. When the cassette
is properly inserted into the infuser and the door is closed, a mechanism opens the flow
regulator to allow the infuser to control fluid flow. When the door is opened, the same
mechanism closes the flow regulator to disable fluid flow.
430-95424-003
4 - 28
Plum A+3 Infusion System
4.5
MECHANICAL OVERVIEW
LINE A
A VALVE
LINE B
B VALVE
AIR TRAP CHAMBER
AIR-IN-LINE SENSOR (PROXIMAL)
INLET VALVE
PRESSURE SENSOR (PROXIMAL)
OUTLET VALVE
PUMPING CHAMBER
PRESSURE SENSOR (DISTAL)
AIR-IN-LINE SENSOR (DISTAL)
PRECISION GRAVITY
FLOW REGULATOR (AND SHUT OFF)
Figure 4-7.
Major Elements of the Dual-Channel Cassette
SECONDARY PORT
(Y-RESEAL OR
LOCKING CAP)
FROM PRIMARY
CONTAINER
PRECISION GRAVITY
FLOW REGULATOR
(CONTROL NOT SHOWN)
FINGER
GRIP
B VALVE
A VALVE
AIR-IN-LINE
SENSOR
(PROXIMAL)
AIR-IN-LINE
SENSOR
(DISTAL)
PRESSURE SENSOR
(PROXIMAL)
PRESSURE SENSOR
(DISTAL)
PUMPING CHAMBER
INLET VALVE
RIGHT VIEW
REAR VIEW
Figure 4-8.
Technical Service Manual
OUTLET
TO
PATIENT
OUTLET VALVE
AIR TRAP
CHAMBER
LEFT VIEW
Fluid Path in the Cassette
4 - 29
430-95424-003
SECTION 4 THEORY OF OPERATION
4.5.2
MECHANISM ASSEMBLY
The mechanism assembly is a fully self-contained unit consisting of the motor and valve
assemblies, A/B valve subsystem, inlet/outlet valve subsystem, plunger drive subsystem,
air bubble (ultrasonic) sensor assemblies, cassette door, and pressure sensor assemblies.
The motor and valve assemblies, A/B valve subsystem, inlet/outlet valve subsystem,
and plunger drive subsystem are detailed in the following sections.
During infuser operation, the mechanism assembly plunger motor drives a lead screw that
is coupled to the plunger. The motor action and lead screw move the plunger forward
to cause the delivery of approximately 0.33 mL of fluid per cycle. The plunger motion
is synchronized to the valve motors to provide controlled fluid delivery.
See Figure 4-9 for mechanism valve pins and sensor locations.
4.5.2.1
MOTOR AND VALVE ASSEMBLIES
The mechanism assembly pumping action is controlled by three stepper motors. The first
stepper motor, in conjunction with an associated valve assembly, activates the A or the B
valve of the cassette, depending on the command. The second stepper motor alternately
opens and closes the inlet and outlet valve to control fluid delivery through the cassette
pumping chamber. A third stepper motor controls plunger movement.
4.5.2.2
A/B VALVE SUBSYSTEM
The A/B valve subsystem includes a motor designed to rotate a cam. When the cam
is positioned at top-dead-center (home position), both valves are closed. Clockwise rotation
(when viewed from the motor side) from the home position opens the A valve, while the B
valve remains closed. Counterclockwise rotation opens the B valve, while the A valve
remains closed.
The A/B valve subsystem consists of a stepper motor with attached cam and integral cam
flag, A and B rockers and valve pins, and a pin detector assembly. The cam flag passes
through an interrupter module as it rotates with the cam. Valve home position
is determined by this cam flag/interrupter module combination through predetermined
factory calibration data. During operation, if the cam flag passes through the interrupter
module at the incorrect time sequence, a motor phase loss is detected. The rocker
is the connecting link between the cam and the valve pin.
430-95424-003
4 - 30
Plum A+3 Infusion System
4.5
MECHANICAL OVERVIEW
B VALVE
A VALVE
REGULATOR ACTUATOR
AIR-IN-LINE SENSOR
(DISTAL)
AIR-IN-LINE SENSOR
(PROXIMAL)
PRESSURE SENSOR
(DISTAL)
PRESSURE SENSOR
(PROXIMAL)
CASSETTE LOCATOR
FORCE SENSING
RESISTOR
OUTLET VALVE
PLUNGER
Figure 4-9.
INLET VALVE
Mechanism Valve Pins and Sensor Locations
4.5.2.3
INLET/OUTLET VALVE SUBSYSTEM
The inlet/outlet valve subsystem is similar in function and build to the A/B valve
subsystem (see Section 4.5.2.2).
4.5.2.4
PLUNGER DRIVE SUBSYSTEM
The main components of the plunger drive subsystem are plunger, lead screw and coupler,
and stepper motor. When the infuser is turned on, the plunger moves from the retracted,
PARK position to the HOME position. The cassette diaphragm is engaged. The stepper
motor rotates approximately 1 2/3 revolutions per pump cycle to permit a 0.33 mL fluid
displacement every pump cycle. The stepper motor then reverses and the plunger returns
to HOME position. This cycle repeats for the duration of fluid administration.
The screw/coupler assembly links the motor and the plunger. This assembly includes
a flag that passes through an interrupter module. This screw/coupler, flag/interrupter
module combination is used in conjunction with predetermined factory calibration data
to determine the plunger position. During operation, if the screw/coupler flag passes
through the interrupter module at the incorrect time sequence, a motor phase loss
is detected.
Technical Service Manual
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430-95424-003
SECTION 4 THEORY OF OPERATION
This page intentionally left blank.
430-95424-003
4 - 32
Plum A+3 Infusion System
Section 5
MAINTENANCE AND SERVICE
TESTS
A complete maintenance program promotes infusion system longevity and trouble-free
operation. Such a program should include routine maintenance, periodic maintenance
inspection, and following any repair procedure, performance verification testing.
5.1
ROUTINE MAINTENANCE
Routine maintenance consists of basic inspection and cleaning procedures. As a minimum
requirement, inspect and clean the infuser after each use. In addition, establish a regular
cleaning schedule for the device.
5.1.1
CLEANING AND SANITIZING
Practice the cleaning and sanitizing guidelines in this section. Follow hospital protocol
for establishing the infuser cleaning schedule.
Before cleaning, turn off the infuser and disconnect from AC power.
Clean the exposed surfaces of the infusion system with a soft, lint-free cloth moistened
with one of the cleaning solutions listed in Table 5-1, or a mild solution of soapy water.
Remove soap residue with clear water. Use a small, non-abrasive brush to aid in cleaning
the cassette door.
WARNING:
DISCONNECT THE INFUSER FROM AC POWER PRIOR TO CLEANING
THE DEVICE. FAILURE TO COMPLY WITH THIS WARNING COULD
RESULT IN ELECTRICAL SHOCK.
CAUTION: To avoid mechanical or electronic damage, do not immerse the infuser
in fluids or cleaning solutions. Do not spray cleaning solutions toward any openings
in the device or directly on the device.
CAUTION: Use only recommended cleaning solutions and follow manufacturers’
recommendations. Using cleaning solutions not recommended by Hospira may result
in product damage. Do not use compounds containing combinations of isopropyl
alcohol and dimethyl benzyl ammonium chloride.
CAUTION: Never use sharp objects such as fingernails, paper clips, or needles,
to clean any part of the infuser. Use only soft cloths or sponges. Do not sterilize
by heat, steam, ethylene oxide (ETO), or radiation.
Technical Service Manual
5-1
430-95424-003
SECTION 5 MAINTENANCE AND SERVICE TESTS

Note: Disinfecting properties of cleaning solutions vary, and not all cleaning
solutions are sanitizers. Check product labeling or consult the manufacturer
for specific information.
Table 5-1.
Cleaning Solution
Cleaning Solutions
Manufacturer
Preparation
Coverage® HB
Steris
Per manufacturer's recommendation
Dispatch® Hospital Cleaner
Disinfectant with Bleach
Caltech Industries
Per manufacturer's recommendation
Manu-Klenz®
Steris
Per manufacturer's recommendation
Precise® Hospital Foam
Cleaner Disinfectant
Caltech Industries
Per manufacturer's recommendation
Sani-Cloth® HB Wipe
Professional Disposables
Per manufacturer's recommendation
Sani-Cloth® Bleach Wipe
Professional Disposables
Per manufacturer's recommendation
Sporicidin®
Sporicidin
Per manufacturer's recommendation
Household Bleach
(Sodium Hypochlorite)
Any
Use per hospital procedures

Do not exceed one part bleach
in ten parts water
Note: At the time of printing, Hospira recommends only the cleaning
solutions in Table 5-1. For updated listings of approved cleaners,
visit www.hospiraparts.com.
5.2
PERFORMANCE VERIFICATION TEST
The Performance Verification Test (PVT) consists of the tests described in the following
sections. The PVT is designed to assure the infusion system is operating properly, and can
also be used for diagnostic purposes during troubleshooting. The PVT should be used
for performance verification before an infuser is placed back in service after repair.

Note: Perform the PVT exactly as described in this manual to assure effective
and reliable product evaluation information.
If any malfunction is detected as a result of the PVT, see Section 6.
430-95424-003
5-2
Plum A+3 Infusion System
5.2
PERFORMANCE VERIFICATION TEST
5.2.1
EQUIPMENT REQUIRED
The PVT requires the following equipment, or equivalents:
- Graduated cylinder, 25 mL, with 0.2 mL graduations (Type A)
- Sterile water or tap water in an IV bag/container
- Digital pressure meter (DPM), 0 to 50 psi (Fluke® Biomedical DPM3)
- Three-way stopcock, latex-free (List No. 3233-01)
- IV Set (List No. 1642)
- Secondary Piggyback Set (List No. 1832)
- 21-gauge butterfly needle, latex-free (List No. 4492-01), or 18-gauge blunt cannula
- Safety analyzer (Fluke® Biomedical 232D)
- Digital multimeter (DMM), (Fluke® 187)
- Nurse call test cable (P/N 561-88416-001)
5.2.2
INSPECTION
Inspect the infusion system periodically for signs of defects such as worn accessories,
broken connections, or damaged cables. In addition, inspect the infusion system after
repair or during cleaning. Replace any damaged or defective external parts.
Inspect the following areas for missing or damaged parts:
- Labels
- External screws
- AC power cord, retainer, and straps
- Pole clamp assembly
- Rubber foot pads
- Front and rear enclosures
- Door assembly and handle
- Battery doors
- Keypad and display
- Peripheral interface assembly
and components
- LEDs
Technical Service Manual
5-3
430-95424-003
SECTION 5 MAINTENANCE AND SERVICE TESTS
5.2.3
TEST SETUP
WARNING:
A PATIENT SHOULD NEVER BE CONNECTED TO THE INFUSER
DURING DEVICE TESTING.
To set up the infuser for the PVT, proceed as follows:
1. Confirm the infuser and appropriate accessories are assembled.
2. Hang two sterile water containers at a height of 18 ± 6 inches above the pumping
chamber of the infuser.
3. Connect the infuser to AC power, and press [ON/OFF] to turn on the device.
4. Verify the infuser is in the unlocked mode. Toggling the [LOCKOUT] switch alternates
between unlocked [DOWN] and locked [UP] modes.
5. Turn off the infuser.
5.2.4
SELF TEST
CAUTION:
Do not place the infuser in service if the self test fails.
Conduct all tests with the infuser connected to AC power unless otherwise specified.
If an alarm condition occurs during the self test, cycle the power and repeat the self test.
If the alarm condition recurs, note the message and take corrective action (see Section 6).
Repeat the self test. If the alarm condition continues to recur, remove the infuser from
service and contact Hospira.
To perform the self test, see Figure 5-1, then proceed as follows:
1. Connect the AC power cord to a grounded AC outlet. Verify the charge/line indicator
CHARGE illuminates and an alarm tone sounds.
2. Without a cassette installed, turn on the infuser.
3. The LCD screen briefly displays the SELF TEST screen (see Figure 5-1).
If the SELF TEST screen does not appear, contact Hospira.
4. After the self test is complete, the message INSERT PLUM SET CLOSE LEVER appears.
5. Verify the time and date. To set the time and date see Section 1.8.3.
6. Open the cassette door and insert a primed cassette. Close the cassette door.
The cassette test is complete when the CASSETTE TEST IN PROGRESS message
disappears.

Note: The message MECHANISM INITIALIZATION IN PROGRESS may
briefly appear prior to the CASSETTE TEST IN PROGRESS message.
7. The CLEAR SETTINGS? message may appear. Press [YES], then turn off the device.
430-95424-003
5-4
Plum A+3 Infusion System
5.2
PERFORMANCE VERIFICATION TEST
LINE FLOW INDICATORS
A
B
HOSPIRA Plum A+
Version X.XX - MM/DD/YY
Copyright HOSPIRA
2009
STATUS
REGION
System Self Test
In Progress
WORKING
REGION
MESSAGE
REGION
SOFTKEY
LABEL REGION
START
STOP
CHARGE
LINE
INDICATOR
ON / OFF
1
4
7
CLEAR
Figure 5-1.
Technical Service Manual
2
5
8
0
3
6
9
.
SOFT KEYS
SELECT
KEYPAD
SILENCE
Display and Keypad
5-5
430-95424-003
SECTION 5 MAINTENANCE AND SERVICE TESTS
5.2.5
CASSETTE ALARM TEST
To perform the cassette alarm test, proceed as follows:
1. Verify the infuser is on. Insert an empty cassette and close the door.
2. Verify the CASSETTE TEST FAIL message is flashing on the display and the alarm
sounds after the cassette test is complete.
3. Open the door and remove the cassette.
4. Turn off the infuser.
5.2.6
FREE FLOW TEST
To perform the free flow test, proceed as follows:
1. With a primed cassette installed, turn on the infuser.
2. If the CLEAR SETTINGS? message appears, press [YES].
3. Place the distal end of tubing into a collection container a minimum of 36 inches
below the cassette.
4. With the cassette door closed, check the distal end of the tubing for fluid flow.
Verify a minimal flow of fluid occurs (a few drops maximum).
5. Open the cassette door and check the distal end of the tubing for fluid flow.
Verify a minimal flow of fluid occurs (a few drops maximum).

Note: A small amount of fluid may be expelled from the cassette when
opening or closing the door.
6. Close the cassette door.
5.2.7
DISPLAY TEST
To perform the display test, see Figure 5-2, and proceed as follows:
1. Verify the LCD backlight is illuminated and the display is clearly legible at eye level
from approximately 18 inches.
2. With the infuser in the PRIMARY screen, press the [OPTIONS/VOL INF] softkey
to select the OPTIONS screen.
3. Select Lighting/Contrast, and press [CHOOSE].
4. Use the [DECREASE SETTING] and [INCREASE SETTING] softkeys to change backlight
intensity. Verify intensity decreases and increases.
5. Select Display Contrast.
6. Press [DECREASE SETTING] and [INCREASE SETTING] to change display contrast.
Verify the contrast decreases and increases.
7. Press the [CANCEL] softkey to return to the OPTIONS screen.
8. Press the [BACK] softkey to return to the PRIMARY screen.
430-95424-003
5-6
Plum A+3 Infusion System
5.2
A
STOPPED
PERFORMANCE VERIFICATION TEST
STOPPED
B
Dopamine
0.0
Rate
mL/hr
0.0
0.0
Vol/Inf
mL
0.0
Back
Prime
A
Figure 5-2.
B
Options/
Vol Inf
Primary Screen
5.2.8
KEYPAD VERIFICATION/FUNCTIONAL TEST
To perform the keypad verification/functional test, see Figure 5-1, then proceed as follows:
1. With the infuser in the PRIMARY screen, press the [A] softkey to select line A.
2. Verify the PROGRAM screen is displayed.
3. Enter a rate of 123 mL/hr and VTBI of 4567 mL.
4. Press [START] and verify fluid is pumping, the message PUMPING is displayed
in the line A status bar, and the line A LED flashes.
5. Press [STOP], then press and hold the [BACKPRIME] softkey.
6. Verify the BACKPRIMING and RELEASE BACKPRIME TO STOP
are displayed, and verify the infuser is actually backpriming.
messages
7. Release the [BACKPRIME] softkey. Verify the CASSETTE TEST IN PROGRESS message
appears, then press [START], and verify normal pumping operation.
8. Press the [B] softkey. Verify PIGGYBACK is the displayed delivery mode. If necessary,
change the delivery mode by pressing the [CHANGE MODE] softkey.
9. Enter a rate of 890 mL/hr and VTBI of 2 mL.
10. Press [START] and verify fluid is pumping, the message PUMPING is displayed
in the line B status bar, and the line B LED flashes.
11. After approximately 20 seconds, verify pumping has switched to line A.
12. Press [STOP].
13. Press [OPTIONS/VOL INF]. Select Volume Infused, and press [CHOOSE].
14. Select line A.
15. Press [CLEAR]. Verify the line A volume is 0 mL and press [ENTER].
Technical Service Manual
5-7
430-95424-003
SECTION 5 MAINTENANCE AND SERVICE TESTS
5.2.9
ALARM LOUDNESS TEST
To perform the alarm loudness test, proceed as follows:
1. Press the [A] softkey to select line A.
2. Enter a rate of 400 mL/hr and VTBI of 1 mL.
3. Press [START] and verify fluid is pumping, the message PUMPING is displayed
in the line A status bar, and the line A LED flashes.
4. Verify the alarm sounds when the dose has been delivered.
5. Turn the volume control knob between HIGH and LOW. Verify the alarm loudness
changes (see Figure 5-3).
6. Press [SILENCE], and verify the alarm is silenced.
7. Press [STOP].
VOLUME
CONTROL
KNOB
ROUND
SEAL (2)
POLE CLAMP
ASSEMBLY
LOCKOUT
SWITCH
NURSE
CALL JACK
RECTANGLE
SEAL
EQUIPOTENTIAL
POST
DATAPORT
CONNECTOR
PERIPHERAL
INTERFACE
ASSEMBLY
Figure 5-3.
430-95424-003
Rear View
5-8
Plum A+3 Infusion System
5.2
PERFORMANCE VERIFICATION TEST
5.2.10
LOCKOUT SWITCH TEST
To perform the lockout switch test, proceed as follows:
1. Press the [A] softkey to select line A.
2. Enter a rate of 400 mL/hr and VTBI of 50 mL.
3. Press [START] and verify fluid is pumping, the message PUMPING is displayed
in the line A status bar, and the line A LED flashes.
4. Toggle the lockout alarm switch up (ON) to engage the alarm (see Figure 5-3).
5. Press any key except [STOP], and verify an alarm sounds and the HARD LOCKOUT
ENABLED message is displayed. Verify the infuser continues to operate until [STOP]
is pressed.
6. Verify the HARD LOCKOUT VIOLATION message appears.
7. Toggle the lockout alarm switch down (OFF). Verify the HARD LOCKOUT VIOLATION
message disappears and the alarm stops.
8. Press [START].
9. Open the door and verify the DOOR OPEN WHILE PUMPING message is displayed
and the audio alarm activates.
10. Close the cassette door.
11. Press [NO] at the CLEAR SETTINGS? prompt.
5.2.11
PROXIMAL OCCLUSION TEST
To perform the proximal occlusion test, proceed as follows:
1. Press the [A] softkey to select line A.
2. Enter a rate of 400 mL/hr and VTBI of 50 mL.
3. Press [START] and verify fluid is pumping, the message PUMPING is displayed
in the line A status bar, and the line A LED flashes.
4. After several pumping cycles, clamp line A tubing proximal to the cassette.
Verify the PROX OCCL A/AIR message flashes and the alarm sounds before three
pumping cycles are completed.
5. Press [SILENCE] and verify the alarm stops while the message on the display
continues to flash.
6. Unclamp the proximal line and press [START]. Verify pumping resumes.
7. Press [STOP].
Technical Service Manual
5-9
430-95424-003
SECTION 5 MAINTENANCE AND SERVICE TESTS
5.2.12
PROXIMAL AIR-IN-LINE TEST
To perform the proximal air-in-line alarm test, see Figure 5-4, then proceed as follows:
1. Install the special cassette marked proximal, and close the cassette door.

Note: Confirm the special cassette proximal bubble sensor tips
are removed.
2. Press [YES] to clear settings.
3. Press the [A] softkey to select line A.
4. Enter a rate of 400 mL/hr and VTBI of 50 mL.
5. Press [START] and verify fluid is pumping, the message PUMPING is displayed
in the line A status bar, and the line A LED flashes.
6. Before 1 mL of fluid is delivered, verify the alarm sounds and the PROX AIR
A. BACKPRIME message is flashing on the display.
7. Open the door, and remove the special cassette.
PROXIMAL BUBBLE SENSOR BULB TIPS
(REMOVED FOR PROXIMAL-AIR-IN-LINE ALARM TEST)
DISTAL BUBBLE SENSOR BULB TIPS
(REMOVED FOR DISTAL-AIR-IN-LINE ALARM TEST)
CASSETTE CENTERING DEVICE
Figure 5-4.
430-95424-003
Special Cassettes with Bubble Sensor Tips Removed
5 - 10
Plum A+3 Infusion System
5.2
PERFORMANCE VERIFICATION TEST
5.2.13
DISTAL AIR-IN-LINE TEST
To perform the distal air-in-line alarm test, see Figure 5-4, then proceed as follows:
1. Install the special cassette marked distal, and close the cassette door.

Note: Confirm the special cassette distal bubble sensor tips are removed.
2. Press [YES] to clear settings.
3. Press the [A] softkey to select line A.
4. Enter a rate of 400 mL/hr and VTBI of 50 mL.
5. Press [START] and verify fluid is pumping, the message PUMPING is displayed
in the line A status bar, and the line A LED flashes.
6. Before 1 mL of fluid is delivered, verify the alarm sounds and the DISTAL AIR
A. BACKPRIME message is flashing on the display.
7. Open the door, and remove the special cassette.
5.2.14
DISTAL OCCLUSION TEST
To perform the distal occlusion test, see Figure 5-5, then proceed as follows:
1. Install a primed cassette and connect the distal tubing to the DPM through
a three-way stopcock as illustrated in Figure 5-5. Close the cassette door.


Note: A reflux valve may be attached between the stopcock and the DPM
to keep moisture out of the DPM.
Note: The height of the DPM must be 0 ± 12 inches from the midline
of the pumping chamber.
2. Turn on the infuser.
3. Press [YES] to clear settings.
4. Press [OPTIONS/VOL INF] to select the OPTIONS screen.
5. Select Pressure/Post Infusion Rate, and press [CHOOSE].
6. Verify continue rate is set to KVO, and distal pressure limit is set at 6 psi.
If the pressure limit is not 6 psi, enter 6 and press [ENTER].
7. Press the [A] softkey to select line A.
8. Enter a rate of 40 mL/hr and VTBI of 50 mL.
9. Open the three-way stopcock to air.
10. Press [START] and verify fluid is pumping, the message PUMPING is displayed
in the line A status bar, and the line A LED flashes.
11. Set the three-way stopcock to measure pressure.
12. Verify the distal occlusion audible alarm occurs at 6 ± 3 psi. Verify the DISTAL
OCCLUSION message is flashing on the screen.
13. Open the three-way stopcock to air. Verify the DPM is zeroed.
Technical Service Manual
5 - 11
430-95424-003
SECTION 5 MAINTENANCE AND SERVICE TESTS
14. Open and close the door. Press [NO] at the CLEAR SETTINGS? prompt.
15. Press [OPTIONS/VOL INF] to select the OPTIONS screen.
16. Select Pressure/Post Infusion Rate, and press [CHOOSE].
17. Select Distal Pressure Limit. Enter 10 psi, and press [ENTER].
18. Set the three-way stopcock to measure pressure, then press [START].
19. Verify the distal occlusion audible alarm occurs at 10 ± 3 psi. Verify the DISTAL
OCCLUSION message is flashing on the screen.
20. Open the door and remove the cassette.
FROM FLUID
CONTAINERS
DPM
THREE-WAY
STOPCOCK
UNIVERSAL
PRESSURE METER
0.00
1
2
INCHES OFH 2O
mmHg
-13.5T O1 5
PSI
-13.5T O7 5
OFF
PRESSURE INPUT
Figure 5-5.
430-95424-003
3
cm OFHO
2
Distal Occlusion Test Setup
5 - 12
Plum A+3 Infusion System
5.2
PERFORMANCE VERIFICATION TEST
5.2.15
DELIVERY ACCURACY TEST

Note: Accuracy testing is for informational purposes only, and is not to be used
as a re-release test. If there is any concern as to infuser accuracy,
contact Hospira.
CAUTION:
Do not remove the protective cover from the 21-gauge needle.
To perform the delivery accuracy test, proceed as follows:
1. Open the cassette door and insert a primed cassette. Close the cassette door.
2. Press [YES] to clear settings.
3. Install an 18-gauge blunt cannula or a 21-gauge needle to the distal end of the
tubing. Verify the fluid container is approximately 18 to 24 inches above
the pumping chamber. Verify all lines are unclamped.
4. Place the distal output end of tubing into the graduated cylinder.
5. Press the [A] softkey to select line A.
6. Enter a rate of 200 mL/hr and VTBI of 10 mL.
7. Press [START] and verify fluid is pumping, the message PUMPING is displayed
in the line A status bar, and the line A LED flashes.
8. Press the [B] softkey to select line B.
9. Verify the infuser is in the PIGGYBACK delivery mode. If necessary, press
[CHANGE MODE] to change the delivery mode.
10. Enter a rate of 200 mL/hr and VTBI of 10 mL.
11. Press [START] and verify fluid is pumping, the message PUMPING is displayed
in the line B status bar, and the line B LED flashes.
12. Verify the KVO message flashes on the display and an audible alarm sounds when
total delivery is complete on line A.
13. Press [STOP] and verify the volume delivered is 20 ± 1 mL.
Technical Service Manual
5 - 13
430-95424-003
SECTION 5 MAINTENANCE AND SERVICE TESTS
5.2.16
NURSE CALL TEST

Note: The nurse call test may be bypassed if the nurse call function is not used.
To perform the nurse call test, attach the nurse call test cable and proceed as follows:
1. Set the primary delivery rate to 400 mL/hr, and the primary dose limit to 1 mL.
2. Connect the DMM to the nurse call test cable.
3. Press [START] and verify pumping action.
4. After DOSE END and KVO appear on the display, observe a short circuit on the DMM
(approximately 1 Ω on a scale of 0 to 100 Ω).
5.2.17
ELECTRICAL SAFETY TEST

Note: The electrical safety test must be performed in accordance with
the instructions contained in the safety analyzer user’s guide.
To perform the electrical safety test, proceed as follows:
1. Connect the AC power cord to the safety analyzer.
2. Connect the safety analyzer ground lead to the device equipotential post.
3. Test the enclosure and earth leakage currents under normal and single fault
conditions. See Table 5-2 for electrical safety measurements.
4. Measure the resistance of the AC connector ground lug and exposed metal parts
(see Table 5-2).
Table 5-2.
Electrical Safety Measurements
Measurement
Not to Exceed
Enclosure leakage current normal condition (ground intact)
0.1 mA
Enclosure leakage current (open)
0.5 mA
Earth leakage current (ground intact)
0.5 mA
Earth leakage current (open ground)
1 mA
Chassis ground resistance
0.2 Ω
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5 - 14
Plum A+3 Infusion System
5.3
PERIODIC MAINTENANCE INSPECTION
5.2.18
END OF THE PVT
If all performance verification tests have been successful, proceed as follows:
1. Press [OPTIONS/VOL INF]. Select Volume Infused, and press [CHOOSE].
2. Press [CLEAR] to clear the volume infused, then press [ENTER].
3. Press the [A] softkey. Press the [CLEAR PROGRAM] softkey.

Note: [CLEAR PROGRAM] will appear only if there is a program in the A or B
channel.
4. Press [YES] at the CLEAR LINE A SETTINGS? prompt.
5. Press [CANCEL/BACK] to return to the delivery screen.
6. Press the [B] softkey. Press the [CLEAR PROGRAM] softkey.

Note: [CLEAR PROGRAM] will appear only if there is a program in the A or B
channel.
7. Press [YES] at the CLEAR LINE B SETTINGS? prompt
8. Reset the infuser to the original configuration.
9. Turn off the infuser and return the device to service.

Note: If any tests fail, see Section 6, or contact Hospira.
5.3
PERIODIC MAINTENANCE INSPECTION
Periodic maintenance inspections should be performed per hospital procedures
for compliance to accreditation requirements. It is recommended that JCAHO and/or
hospital protocol be followed for establishing a periodic maintenance inspection schedule.
Product specifications for this inspection are listed in Section 8.
To perform the periodic maintenance inspection, complete the PVT in Section 5.2.
Technical Service Manual
5 - 15
430-95424-003
SECTION 5 MAINTENANCE AND SERVICE TESTS
5.4
BATTERY OPERATION OVERVIEW
The infusion system is intended to operate on battery power on an exception basis only,
such as emergency backup or temporary portable operation. Examples of emergency
backup include AC power failure or inadvertent disconnection of the AC power cord.
An instance of temporary portable operation includes patient transfer from one location
to another.
The device should be connected to AC power whenever possible to allow the battery
to remain fully charged. The line power indicator turns off when the infuser is operating
on battery power. The backlight extinguishes after approximately one minute of operation
on battery power.
Factors that most commonly affect battery life are the depth and frequency of discharge
and the length of the recharge period. As a general rule, the more often the battery
is discharged and recharged, the sooner it will need replacement.
The primary cause of damage is leaving the battery in a less than fully charged state
for any period of time. Battery damage can occur in a matter of hours and cause
a permanent loss of battery capacity. The amount of lost capacity depends on the degree
of discharge, the storage temperature, and the length of time the battery was stored
in a discharged state.

Note: A permanently damaged battery cannot be recharged to full capacity.
When the battery discharges below the acceptable level while the infuser is operating,
the audio indicator is activated and the “WARNING: LOW BATTERY” message displays.
Although it is not recommended to continue operating the infuser on battery power at this
point, the battery continues providing power until it is depleted. When the battery
is depleted, delivery stops, a continuous alarm tone sounds, and, after three minutes,
the infuser automatically turns off.
CAUTION: As soon as the low battery alarm occurs, connect the infuser
to AC power.
When the infuser detects that the battery has reduced capacity, it will register
a Replace Battery condition. For the first two occurrences of a Replace Battery
condition, the WARNING: LOW BATTERY message will appear and the audio indicator will
activate. The message and audio indicator can be cleared only when the device is plugged
in or turned off. For the third and subsequent occurrences, the WARNING: REPLACE
BATTERY message will appear, and the audio indicator will activate and persist over power
cycles.
The message and audio indicator are cleared by replacing the battery, accessing
the Biomed Settings screen, and pressing the [CHANGE BATTERY] softkey.
Recharging can occur any time the infuser is connected to AC power. It is recommended
that the infuser be connected to AC power whenever practical to maximize available battery
charge during transport or ambulation. The infuser does not have to be on for the battery
to recharge.

Note: The infuser should be operated on battery power for three continuous
hours at least once every six months for optimum battery performance and life.
430-95424-003
5 - 16
Plum A+3 Infusion System
Section 6
TROUBLESHOOTING
This section contains information on technical assistance, warning messages, alarm
messages and error codes, and troubleshooting procedures.
6.1
TECHNICAL ASSISTANCE
For technical assistance, product return authorization, and to order parts, accessories,
or manuals within the United States, contact Hospira.
1-800-241-4002
For additional technical assistance, technical training, and product information,
visit the website at www.hospira.com.
Send all authorized, prepaid returns within the United States to the following address:
Hospira, Inc.
Technical Support Operations
755 Jarvis Drive
Morgan Hill, California 95037
For technical assistance, product return authorization, and to order parts, accessories,
or manuals from outside the United States, contact the nearest Hospira sales office.
6.2
WARNING MESSAGES
Table 6-1 lists warning messages, possible causes, and corrective actions. These warning
messages are captured in the Error Log.


Note: When the infuser detects that the battery has reduced capacity,
it will register a Replace Battery condition. For the first two occurrences
of a Replace Battery condition, the WARNING: LOW BATTERY message will
appear and the audio indicator will activate. The message and audio indicator
can be cleared only when the device is plugged in or turned off. For the third
and subsequent occurrences, the WARNING: REPLACE BATTERY message will
appear, and the audio indicator will activate and persist over power cycles.
The message and audio indicator are cleared by replacing the battery,
accessing the Biomed Settings screen, and pressing the [CHANGE BATTERY]
softkey.
Note: If the device is not plugged in, and turned on with a previously depleted
battery, the infuser will display a DEPLETED BATTERY message for
12 seconds ± 3 seconds, then power off.
Technical Service Manual
6-1
430-95424-003
SECTION 6 TROUBLESHOOTING
Table 6-1.
Message
Warning Messages
Possible Cause
Corrective Action
Stop delivery, then turn off
Attempting to turn off the
infuser while a delivery is in
progress
Stop all lines, then turn
off the infuser
Warning: Low Battery
Battery is discharged so that
only approximately 30 minutes
of battery life remain
Plug into AC power
Warning: Replace Battery
Battery service needed
Replace the battery
(see Section 7.2.4)
Battery voltage is less than
the depleted threshold and
the charge level is higher
than the low charge threshold
Warning: Charger Service
A hardware problem with
the battery charging circuit
is detected
Press [SILENCE]
Charging circuitry is not
behaving as expected
6.3
ALARM MESSAGES AND ERROR CODES
Under most alarm conditions the infuser ceases normal operation, generates an audible
alarm, and displays an alarm message or error code on the LCD screen.
There are two types of alarm conditions:
- alarm codes that can be cleared by the operator
- error codes that require qualified service personnel
6.3.1
OPERATIONAL ALARM MESSAGES
Table 6-2 lists infuser alarm codes that can be cleared by the operator. Also listed
in Table 6-2 are the alarm messages, descriptions, possible causes, and corrective actions.

Note: Operational alarm messages are displayed on the LCD screen.
Associated error codes are displayed in the Alarms Log (see Section 1.8.2).
430-95424-003
6-2
Plum A+3 Infusion System
6.3
Table 6-2.
Alarm
Code
ALARM MESSAGES AND ERROR CODES
Operational Alarm Messages and Corrective Actions
Alarm
Description
Possible Cause
Corrective
Action
N100
(URC)
Unrecognizable
cassette
Incorrect cassette
type
An incorrect
cassette is inserted
Insert proper
cassette
N101
(NAA)
No action
No operator action
and no delivery for
two minutes during
delivery parameters
entry
Interruption
or a partial change
to a program
Complete
programming
N102
(RL)
Infuser idle
2 minutes
Infuser in reset or idle
for over two minutes
Programming set
without start for two
minutes
Press [START]
N103
(SEEP
CRC)
NV RAM lost
thrpy data
Therapy data is lost
Infuser did
not complete
the previous
non-volatile
memory write
successfully
Re-enter all
programmed data
N104
(NC2)
Nurse callback B
Delivery line B
has changed
(if alarm is enabled)
End of delivery
step on line B
other than VTBI
complete while
callback is enabled
Press [SILENCE]
N105
(NC1)
Nurse callback A
Delivery line A
has changed
(if alarm is enabled)
End of delivery
step on line A
other than VTBI
complete while
callback is enabled
Press [SILENCE]
N160
or
E160
(VTB2)
Line B VTBI
complete
Programmed VTBI
completed on line B
VTBI complete
on line B
Press [SILENCE],
replace IV bag,
and restart line B
N161
or
E161
(VTB1)
Line A VTBI
complete
Programmed VTBI
completed on line A
VTBI complete
on line A
Press [SILENCE],
replace IV bag,
and restart line A
N180
or
E180
(OD1)
Distal Occl
Peak distal occlusion,
non-delivery
Distal occlusion
detected during
non-delivery
Backprime the
cassette and
restart the infuser
N181
or
E181
(OD1)
Distal Occl
Negative distal
occlusion,
non-delivery
Distal occlusion
detected during
non-delivery
Backprime the
cassette and
restart the infuser
N182
or
E182
(OP2)
Prox. Occl B, Air
or Prox. Occl B
Negative proximal
occlusion B,
non-delivery
Proximal occlusion
detected on line B
during non-delivery
Backprime the
cassette and
restart line B
or
Stop all lines,
backprime the
cassette, and
restart all lines
Technical Service Manual
6-3
430-95424-003
SECTION 6 TROUBLESHOOTING
Table 6-2.
Alarm
Code
Operational Alarm Messages and Corrective Actions
Alarm
Description
Possible Cause
Corrective
Action
N183
or
E183
(OP2)
Prox. Occl B, Air
or Prox. Occl B
Peak proximal
occlusion B,
non-delivery
Proximal occlusion
detected on line B
during non-delivery
Backprime the
cassette and
restart line B
or
Stop all lines,
backprime the
cassette, and
restart all lines
N184
or
E184
(OP1)
Prox. Occl A, Air
or Prox. Occl A
Negative proximal
occlusion A,
non-delivery
Proximal occlusion
detected on line A
during non-delivery
Backprime the
cassette and
restart line A
or
Stop all lines,
backprime the
cassette, and
restart all lines
N185
or
E185
(OP1)
Prox. Occl A, Air
or Prox. Occl A
Peak proximal
occlusion A,
non-delivery
Proximal occlusion
detected on line A
during non-delivery
Backprime the
cassette and
restart line A
or
Stop all lines,
backprime the
cassette, and
restart all lines
N186
or
E186
(OD1)
Distal Occl
Peak distal occlusion,
delivery
Distal occlusion
detected during
delivery
Fix occlusion and
restart the infuser
N187
or
E187
(OD1)
Distal Occl
Negative distal
occlusion,
delivery
Distal occlusion
detected during
delivery
Fix occlusion and
restart the infuser
N188
or
E188
(OP2)
Prox. Occl B, Air
Negative proximal
occlusion B, delivery
Proximal occlusion
detected during
delivery on line B
Fix occlusion and
restart line B
or
Stop all lines,
fix occlusion
and restart
the infuser
N189
or
E189
(OP2)
Prox. Occl B, Air
Peak proximal
occlusion B, delivery
Proximal occlusion
detected during
delivery on line B
Fix occlusion and
restart line B
or
Stop all lines,
fix occlusion
and restart
the infuser
N190
or
E190
(OP1)
Prox. Occl A, Air
Negative proximal
occlusion A, delivery
Proximal occlusion
detected during
delivery on line A
Fix occlusion and
restart line A
or
Stop all lines,
fix occlusion
and restart
the infuser
430-95424-003
6-4
Plum A+3 Infusion System
6.3
Table 6-2.
Alarm
Code
ALARM MESSAGES AND ERROR CODES
Operational Alarm Messages and Corrective Actions
Alarm
Description
Possible Cause
Corrective
Action
N191
or
E191
(OP1)
Prox. Occl A, Air
Peak proximal
occlusion A, delivery
Proximal occlusion
detected during
delivery on line A
Fix occlusion and
restart line A
or
Stop all lines,
fix occlusion
and restart
the infuser
N230
or
E230
(APT)
Prox. Air Total
Proximal air-in-line
total
500 μL of air
has entered
the cassette
Backprime the
cassette and
restart the infuser
or
Remove and
manually reprime
the cassette, and
restart the infuser
N231
or
E231
(APB)
Prox. Air on B,
backprime
Proximal air-in-line
on line B
500 μL of air
has entered
the cassette
on line B
Backprime the
cassette and
restart line B
or
Remove and
manually reprime
the cassette and
restart the infuser
N232
or
E232
(APA)
Prox. Air on A,
backprime
Proximal air-in-line
on line A
500 μL of air
has entered
the cassette
on line A
Backprime the
cassette and
restart line A
or
Remove and
manually reprime
the cassette and
restart the infuser
N233
or
E233
(ADC)
Distal air
cumulative
Distal air cumulative
500 μL of air
detected in the last
5.3 mL of fluid
delivered
Remove and
manually reprime
the cassette and
restart the infuser
N234
or
E234
(ADB)
Distal air bolus
Distal air bolus
100 μL bolus
of air detected
at distal sensor
Remove and
manually reprime
the cassette and
restart the infuser
N250
or
E250
(DCO1)
Door opened
while pumping
Door opened
while pumping
Door opened
while pumping
Turn off the infuser
or
Insert the cassette
and close the door
Valve/cass test fail
Valve/cassette
test failure
Valve/cassette
fails leak test
Backprime
and retest
or
Replace
the cassette
and retest
or
Replace the
mechanism
N251
or
E251
(CS1)
Technical Service Manual
6-5
430-95424-003
SECTION 6 TROUBLESHOOTING
Table 6-2.
Alarm
Code
Operational Alarm Messages and Corrective Actions
Alarm
Description
Possible Cause
Corrective
Action
N252
or
E252
(BDP)
Depleted battery
Low battery
Battery terminal
voltage is less
than 5.45 V
Connect the
infuser to AC
power
or
Recharge
or replace
the battery
N253
or
E253
(LOV)
Lockout violation
Hard lockout violation
The use of the
[STOP] key or an
attempt to open the
door while lockout
switch is locked
Unlock the
lockout switch
N254
or
E254
(FPL)
Lockout Enabled
Keypad locked
Any action
not resulting
in stopping
of delivery while
lockout switch
is locked
Unlock the
lockout switch
N255
(SLV)
Lockout violation
Soft lockout violation
The use of the
[STOP] key or an
attempt to open the
door while lockout
switch is locked
Unlock the
software lockout
switch
N256
(SLE)
Lockout enabled
Soft lockout enabled
Any action
not resulting
in stopping of
delivery while
lockout switch
is locked
Unlock the
software lockout
switch
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6-6
Plum A+3 Infusion System
6.3
ALARM MESSAGES AND ERROR CODES
6.3.2
ERROR CODES REQUIRING TECHNICAL SERVICE
Table 6-3 lists infusion system error codes that require technical service. Also listed
in Table 6-3 are malfunction descriptions, possible causes, and corrective actions.
Table 6-3.
Error Code
Error Codes Requiring Technical Service
Malfunction
Possible Cause
Corrective Action
E300
ADC failure
Analog to digital converter
failure
Replace CPU PWA
(see Section 6)
Reset time and date,
if required
(see Section 1.8.3)
E301
Audio alarm failure
Piezo is off but sensed on
or
Piezo is on but sensed off
Turn power off, then on,
to reset the infuser
Replace piezo alarm
(see Section 7.2.14.7)
Replace CPU PWA
(see Section 7.2.14.6)
Reset time and date,
if required
(see Section 1.8.3)
E302
Backlight failure
Backlight (CCFT tube) is not
at the expected range
Turn power off, then on,
to reset the infuser
Replace display
(see Section 7.2.14.3)
Reset time and date,
if required
(see Section 1.8.3)
E320
Battery charge
current out
of range
Battery charge current is
out of range after 8 hours
Replace battery
(see Section 7.2.4)
Replace power supply PWA
(see Section 7.2.14.1)
Reset time and date,
if required
(see Section 1.8.3)
E321
Battery not
charging
Battery charging timed out
Complete battery discharge
has occurred
E322
Battery current
calibration value
out of range
Battery integrator calibration
value is out of range
E323
Battery trickle
charge current
out of range
Battery trickle charge
current is out of range
Charge battery for additional
eight hours
Replace battery
(see Section 7.2.4)
Replace power supply PWA
(see Section 7.2.14.1)
Reset time and date,
if required
(see Section 1.8.3)
E324
Supply
overvoltage
An overvoltage condition is
detected in the charging circuit
E325
Battery
overvoltage
An overvoltage condition
is detected in the battery
Technical Service Manual
6-7
430-95424-003
SECTION 6 TROUBLESHOOTING
Table 6-3.
Error Code
Error Codes Requiring Technical Service
Malfunction
Possible Cause
Corrective Action
E326
Battery
disconnected
Battery disconnected
while the infuser is on
Check for loose battery
connections
Replace battery
(see Section 7.2.4)
Reset time and date,
if required
(see Section 1.8.3)
E327
Brownout condition
Brownout condition detected
Replace power supply PWA
(see Section 7.2.14.1)
Reset time and date,
if required
(see Section 1.8.3)
E340
Critical instruction
failure
Power-up CPU register
test failed
(no malfunction message
displayed)
Replace CPU PWA
(see Section 7.2.14.6)
Reset time and date,
if required
(see Section 1.8.3)
E341
Critical data
memory failure
Critical data memory failure
Replace mechanism assembly
(see Section 7.2.14.8)
Reset time and date,
if required
(see Section 1.8.3)
E342
Display failure
Defective display
Replace display
(see Section 7.2.14.3)
Reset time and date,
if required
(see Section 1.8.3)
E343
Distal air sensor
failure 1
With the cassette removed,
the distal air sensor self test
detects liquid
E344
Distal air sensor
failure 2
With the cassette inserted,
the distal air sensor self test
detects sensor out of range
Replace mechanism assembly
(see Section 7.2.14.8)
Reset time and date,
if required
(see Section 1.8.3)
E345
Distal pressure
sensor failure 1
Distal pressure sensor failed
while the infuser is off
E346
Distal pressure
sensor failure 2
Distal pressure sensor failed
while the infuser is on
E347
Hardware
watchdog
failure
Hardware watchdog failure
Replace CPU PWA
(see Section 7.2.14.6)
Reset time and date,
if required
(see Section 1.8.3)
E378
I/O valve
phase loss
Generic I/O valve failure
Turn power off, then on,
to reset the infuser
Replace mechanism assembly
(see Section 7.2.14.8)
Reset time and date,
if required
(see Section 1.8.3)
430-95424-003
6-8
Plum A+3 Infusion System
6.3
Table 6-3.
Error Code
ALARM MESSAGES AND ERROR CODES
Error Codes Requiring Technical Service
Malfunction
Possible Cause
Corrective Action
E379
L/S valve
phase loss
Generic L/S valve failure
E380
Plunger motor
phase loss
Generic plunger motor failure
E430
Proximal air sensor
failure 1
Proximal air sensor ongoing
test detects liquid with cassette
removed
E431
Proximal air sensor
failure 2
Proximal air sensor self test
detects liquid with cassette
removed
E432
Proximal pressure
sensor 1
Proximal pressure sensor
failed while the infuser is off
E433
Proximal pressure
sensor 2
Proximal pressure sensor
failed while the infuser is on
E434
RAM failure
RAM failure
Turn power off, then on,
to reset the infuser
Replace peripheral assembly
(see Section 7.2.7)
Reset time and date,
if required
(see Section 1.8.3)
E435
RTC failure
Real-time clock failure
Turn power off, then on,
to reset the infuser
Replace CPU PWA
(see Section 7.2.14.6)
Reset time and date,
if required
(see Section 1.8.3)
E436
ROM failure
ROM checksum failure
Turn power off, then on,
to reset the infuser
Replace peripheral assembly
(see Section 7.2.7)
Reset time and date,
if required
(see Section 1.8.3)
E437
Software failure
Generic software failure
E438
Stack out-of-range
failure
Stack out-of-range failure
Turn power off, then on,
to reset the infuser
Replace CPU PWA
(see Section 7.2.14.6)
Reset time and date,
if required
(see Section 1.8.3)
E439
Stuck key
A key is sensed as pressed
for over two minutes
E440
Power hold stuck
Power hold signal stuck
Power cannot be turned off
Technical Service Manual
6-9
Turn power off, then on,
to reset the infuser
Replace mechanism assembly
(see Section 7.2.14.8)
Reset time and date,
if required
(see Section 1.8.3)
Replace mechanism assembly
(see Section 7.2.14.8)
Reset time and date,
if required
(see Section 1.8.3)
Replace keypad
(see Section 7.2.14.2)
Reset time and date,
if required
(see Section 1.8.3)
430-95424-003
SECTION 6 TROUBLESHOOTING
Table 6-3.
Error Code
Error Codes Requiring Technical Service
Malfunction
Possible Cause
Corrective Action
E443
LCD failure
LCD bias is out of range
Replace display assembly
(see Section 7.2.14.3)
Reset time and date,
if required
(see Section 1.8.3)
E444
CPU timebase
inaccurate
CPU timer 2 and RTC
measured times disagree
Turn power off, then on,
to reset the infuser
Replace CPU PWA
(see Section 7.2.14.6)
Reset time and date,
if required
(see Section 1.8.3)
E445
RTC memory
failure
Real-time clock memory
is corrupt
Turn power off, then on,
to reset the infuser
Reset time and date,
if required
(see Section 1.8.3)
E446
CPU timer failure
CPU timer 1 and timer 2
measured times disagree
E447
Battery ADC
reading failure
16 consecutive readings
have been either all zero
or the max value
Replace CPU PWA
(see Section 7.2.14.6)
Reset time and date,
if required
(see Section 1.8.3)
E448
SEEP write failure
SEEP data write failed
E449
SEEP calibration
data corrupted
Calibration data block
corrupted
E450
MMIO port
read/write
failure
I/O port read/write failure
Replace CPU PWA
(see Section 7.2.14.6)
Reset time and date,
if required
(see Section 1.8.3)
E451
Inaccurate delivery
Over/under delivery detected
E452
Software failure
Miscellaneous
software failures
Turn power off, then on,
to reset the infuser
Reset time and date,
if required
(see Section 1.8.3)
If error codes recur,
contact Hospira
E453
Two SEEP
CRC errors
NVRAM data block corrupted
E454
NVRAM over
capacity
Software trying to write into
non-existent NVRAM space
430-95424-003
6 - 10
Replace mechanism assembly
(see Section 7.2.14.8)
Replace CPU PWA
(see Section 7.2.14.6)
Replace CPU/driver cable
(see Section 7.2.14.4)
Reset time and date,
if required
(see Section 1.8.3)
Replace mechanism assembly
(see Section 7.2.14.8)
Replace CPU PWA
(see Section 7.2.14.6)
Replace CPU/driver cable
(see Section 7.2.14.4)
Reset time and date,
if required
(see Section 1.8.3)
Plum A+3 Infusion System
6.4
Table 6-3.
Error Code
TROUBLESHOOTING PROCEDURES
Error Codes Requiring Technical Service
Malfunction
Possible Cause
Corrective Action
E455
Invalid device
configuration
Incorrect flash memory
on peripheral PWA
Turn power off, then on,
to reset the infuser
Replace peripheral PWA
(see Section 7.2.8)
E456
Invalid drug library
A drug library install was
started but not completed
successfully
Attempt to reinstall
the drug library
(see the System
Operating Manual)
Replace peripheral assembly
(see Section 7.2.7)
E457
Drug library
corrupted
CRC failure on drug library
Reload the library
(see the System
Operating Manual)
The following error codes are not generated in the Biomed service mode:
E320
E321
E322

E323
E324
E325
E326
E343
E345
E346
E371
E372
E373
E374
E375
E376
E377
E378
E379
E380
E430
E431
E432
E433
E441
E447
Note: Some error codes include sub-ID codes. These sub-ID codes are intended
for Hospira internal use only, and should be included when contacting Hospira.
6.4
TROUBLESHOOTING PROCEDURES
This section details recommended procedures for problems not associated
with malfunction alarms.
Before performing any troubleshooting procedure, turn the infuser off, then on.
Allow the self test to complete and proceed as follows:
1. If a malfunction exists, carefully inspect the infuser for damage as described
in Section 5.2.2.
2. If an infuser inspection has not disclosed a malfunction, perform the PVT
in Section 5.2. See Table 6-4 for section reference, probable cause, and corrective
actions.
3. If, after completing step 1 and step 2, a malfunction has not been located, or if the
infuser persistently fails, contact Hospira.
Technical Service Manual
6 - 11
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SECTION 6 TROUBLESHOOTING
Table 6-4.
Test Failure
Troubleshooting with the PVT
Probable Cause
Corrective Action
Self Test
Section 5.2.4
Cassette not properly installed
Reseat cassette
Defective CPU PWA
Replace CPU PWA
(see Section 7.2.14.6)
Cassette Alarm Test
Section 5.2.5
Cassette not properly seated
Reseat cassette
Defective cassette
Replace cassette
Free Flow Test
Section 5.2.6
Cassette not properly seated
Reseat cassette
Defective cassette
Replace cassette
Defective or dirty valve pins
Clean valve pins
Replace mechanism assembly
(see Section 7.2.14.8)
Display Test
Section 5.2.7
Defective display assembly
Replace display assembly
(see Section 7.2.14.3)
Keypad Verification/Functional
Test
Section 5.2.8
Defective keypad
Replace keypad
(see Section 7.2.14.2)
Alarm Loudness Test
Section 5.2.9
Defective CPU
Replace CPU PWA
(see Section 7.2.14.6)
Defective peripheral PWA
Replace peripheral PWA
(see Section 7.2.8)
Defective piezo alarm
assembly
Replace piezo alarm assembly
(see Section 7.2.14.7)
Lockout Switch Test
Section 5.2.10
Defective peripheral PWA
Replace peripheral PWA
(see Section 7.2.8)
Proximal Occlusion Test
Section 5.2.11
Closed proximal clamp
Open clamp
Cassette not properly primed
Re-prime cassette
Defective cassette
Replace cassette
Dirty sensor pin
Clean sensor pin
Defective APP PWA
Replace mechanism assembly
(see Section 7.2.14.8)
Defective special cassette
Replace special cassette
Dirty sensors
Clean sensors
Defective APP PWA
Replace mechanism assembly
(see Section 7.2.14.8)
Defective special cassette
Replace special cassette
Dirty sensors
Clean sensors
Defective APP PWA
Replace mechanism assembly
(see Section 7.2.14.8)
Proximal Air-in-Line Test
Section 5.2.12
Distal Air-in-Line Test
Section 5.2.13
430-95424-003
6 - 12
Plum A+3 Infusion System
6.4
Table 6-4.
Test Failure
Distal Occlusion Test
Section 5.2.14
Delivery Accuracy Test
Section 5.2.15
Electrical Safety Test
Section 5.2.16
Technical Service Manual
TROUBLESHOOTING PROCEDURES
Troubleshooting with the PVT
Probable Cause
Corrective Action
Cassette not properly primed
Re-prime cassette
Defective cassette
Replace cassette
Dirty sensor pin
Clean sensor pin
Defective APP PWA
Replace mechanism assembly
(see Section 7.2.14.8)
Set not properly primed
Re-prime cassette
Damaged or faulty cassette
Replace cassette
Defective mechanism
assembly
Replace mechanism assembly
(see Section 7.2.14.8)
Defective AC power cord
Replace AC power cord
(see Section 7.2.5)
6 - 13
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SECTION 6 TROUBLESHOOTING
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430-95424-003
6 - 14
Plum A+3 Infusion System
Section 7
REPLACEABLE PARTS
AND REPAIRS
This section itemizes all parts and subassemblies of the infusion system that are repairable
within the scope of this manual. In addition, this section details replacement procedures
for all listed parts.
7.1
REPLACEABLE PARTS
Replaceable parts for the infusion system are itemized in the Illustrated Parts Breakdown
(IPB) and are identified in Figure 9-1. Table 9-2 identifies each part by an index number
that correlates to Figure 9-1.
To view the online replacement parts list, visit the website at www.hospiraparts.com.
7.2
REPLACEMENT PROCEDURES
This section contains safety and equipment precautions, required tools and materials,
and step-by-step procedures for replacing parts in the infuser. Unless otherwise stated,
always perform the PVT after a replacement procedure.

Note: Figures are rendered as graphic representations to approximate actual
product. Therefore, figures may not exactly reflect the product.
7.2.1
SAFETY AND EQUIPMENT PRECAUTIONS
Before opening the front enclosure of the infuser, take all necessary precautions
for working on high-voltage equipment.
WARNING:
EXPLOSION HAZARD EXISTS IF THE INFUSER IS SERVICED
IN THE PRESENCE OF FLAMMABLE SUBSTANCES.
WARNING:
UNLESS OTHERWISE INDICATED, DISCONNECT THE INFUSER
FROM AC POWER BEFORE PERFORMING REPLACEMENT
PROCEDURES.
CAUTION: Use proper ESD grounding techniques when handling components.
Wear an antistatic wrist strap and use an ESD-protected workstation. Store PWAs
in antistatic bags before placing them on any surface.
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SECTION 7 REPLACEABLE PARTS AND REPAIRS
7.2.2
REQUIRED TOOLS AND MATERIALS
The following tools and materials, or equivalents, are required for the replacement
procedures in this section. In addition, the beginning of each procedure lists tools
and materials required for that specific procedure.
- Set of flat blade screwdrivers
- Wide head pliers
- Set of Phillips screwdrivers
- Diagonal cutters
- Set of standard and metric nutdrivers
- X-acto® knife
- Metric 10 mm wrench
- Mild solvent
- Custom nutdriver (P/N 519-95056-001)
- Lint-free cloth
- Long needle nose pliers
7.2.3
RUBBER FOOT PAD REPLACEMENT
The recommended tool for this procedure is a #2 Phillips screwdriver.
Replacement parts for this procedure are:
Pad, Rubber Foot
Screw, 6-32 x 1/2, Pan Head, Phillips
To replace a rubber foot pad see Figure 7-1, then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Place the infuser face down on a soft flat surface.
3. Using the Phillips screwdriver, remove the screw that secures the rubber foot pad.
4. Install the replacement rubber foot pad in the exact reverse order of removal.
Replacement of a rubber foot pad is routine maintenance and no verification procedure
is normally required. However, if the infuser may have been damaged during
the procedure, perform the PVT in Section 5.2.
430-95424-003
7-2
Plum A+3 Infusion System
7.2
REPLACEMENT PROCEDURES
RUBBER FOOT PAD (4)
BATTERY DOOR (3)
6-32 x 1/2
PAN HEAD SCREW (4)
Figure 7-1.
Bottom View
7.2.4
BATTERY, WIRE HARNESS, DOOR, AND DOOR PAD
REPLACEMENT
Recommended tools for this procedure are:
- Medium size flat blade screwdriver
- Long needle nose pliers
- X-acto knife
- Battery cable connector tool (P/N 519-89318-001), or equivalent
- Mild solvent
- Lint-free cloth
Replacement parts for this procedure are:
Assembly, Battery, with Wire Harness
Door, Battery
Pad, Door
Ring, Retaining
Screw, 6-32 x 1/2, Hex Head, Slotted, with Washer
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SECTION 7 REPLACEABLE PARTS AND REPAIRS
To replace a battery, wire harness, door, or door pad see Figure 7-2, then proceed
as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Place the infuser face down on a soft flat surface.
3. Using the flat blade screwdriver, remove the screw and retaining ring that attach
the battery door to the infuser, and remove the door.
4. Inspect the battery door and replace, if required.
5. If the battery door pad is defective, remove it and clean the door with mild solvent.
Dry the battery door thoroughly, and install the replacement pad on the door.
6. Disconnect the battery harness from the charger circuit cable. Carefully pull the
battery harness wires and connector outside the enclosure, and remove the battery.
7. Using the needle nose pliers, remove the wire harness connectors from the battery
terminals.
8. Using the battery cable connector tool, install the wire harness connectors onto
the terminals of the replacement battery. Confirm the red wire is installed
on the positive (+) terminal next to the red marker on top of the battery,
and the black wire is installed on the negative (-) terminal.
CAUTION: Do not allow the terminals to come into contact with each other.
9. Connect the replacement battery harness to the charger circuit cable, and insert
the replacement battery into the enclosure. The cable connectors are keyed so that
cables cannot be connected incorrectly.

Note: Confirm the battery harness is not pinched between the battery
and the enclosure.
10. Replace the battery door using the screw and retaining ring that were removed
in step 3.
11. Press [ON/OFF] with the infuser disconnected from AC power, and verify the front
panel battery symbol illuminates.
12. Access the BIOMED SETTINGS screen and press [CHANGE BATTERY].

Note: The [CHANGE BATTERY] softkey will not appear on earlier versions
of the Plum A+3.
Replacement of the battery door and door pad is routine maintenance and no verification
procedure is normally required. However, if the infuser may have been damaged during
the procedure, perform the PVT in Section 5.2.
430-95424-003
7-4
Plum A+3 Infusion System
7.2
REPLACEMENT PROCEDURES
AC POWER CORD
BATTERY WITH WIRE
HARNESS ASSEMBLY (3)
VELCRO STRAP
DOOR PAD (3)
4-40 x 3/8
PAN HEAD
SCREW
EQUIPOTENTIAL
TERMINAL
RETAINING RING (3)
POWER CORD
RETAINER
BATTERY DOOR (3)
6-32 x 1/2
HEX HEAD
SCREW (3)
Figure 7-2.
Technical Service Manual
AC Power Cord Assembly and Battery Assembly
7-5
430-95424-003
SECTION 7 REPLACEABLE PARTS AND REPAIRS
7.2.5
AC POWER CORD, RETAINER, AND VELCRO STRAP
REPLACEMENT
The recommended tool for this procedure is a #2 Phillips screwdriver.
Replacement parts for this procedure are:
Cordset, AC Power, Hospital Grade, Detachable
Retainer, AC Power Cord
Strap, Velcro, AC Power Cord
Screw, 4-40 x 3/8, Pan Head, Phillips
To replace the AC power cord, retainer, or Velcro strap see Figure 7-2, then proceed
as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Using the Phillips screwdriver, remove the screw from the AC power cord retainer.
Turn the power cord retainer approximately 1/8 turn counterclockwise.
4. Unplug the power cord, and slide the plug through the retainer.

Note: Remove the AC power cord from its receptacle by grasping the plug.
Do not pull the cord.
5. Remove the Velcro strap from the power cord. Inspect the Velcro strap for wear
and replace, if required. Attach the strap to the replacement power cord.
6. Inspect the retainer and replace, if required.
7. Install the replacement AC power cord in the exact reverse order of removal.
8. Reinstall the batteries and connect the infuser to AC power.
9. Press [ON/OFF] and verify the infuser powers on.
Replacement of the AC power cord, retainer, and Velcro strap is routine maintenance
and no verification procedure is normally required. However, if the infuser may have been
damaged during the procedure, perform the PVT in Section 5.2.
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7-6
Plum A+3 Infusion System
7.2
REPLACEMENT PROCEDURES
7.2.6
SEPARATING THE FRONT ENCLOSURE, REAR
ENCLOSURE, AND MAIN CHASSIS ASSEMBLY
The front enclosure consists of an upper assembly and a lower assembly. The main chassis
assembly consists of an upper chassis and a lower chassis.
The recommended tool for this procedure is a #2 Phillips screwdriver.
Replacement parts for this procedure are:
Enclosure, Upper Front
Enclosure, Lower Front
Enclosure, Rear
Chassis, Upper
Chassis, Lower
Screw, 6-32 x 1/2, Pan Head, Phillips
Screw, 6-32 x 1 1/4, Pan Head, Phillips
Screw, 6-32 x 2 3/4, Pan Head, Phillips
Screw, 8-32 x 3 1/2, Pan Head, Phillips
Washer, Flat, #6
Washer, Flat #8
To separate the front enclosure, rear enclosure, and main chassis assembly see Figure 7-3,
then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Remove the AC power cord and retainer as described in Section 7.2.5.
4. Using the Phillips screwdriver, remove the screws from the rear enclosure.
5. Remove the rear enclosure by lifting it up and to the side.
6. Disconnect the three internal power connectors.
7. Using the Phillips screwdriver, remove the screws from the bottom corners
of the center mechanism.
8. Set the infuser upright and remove the upper front enclosure by pulling it away
from the upper chassis.
9. Remove the lower front enclosure by tilting the infuser back approximately
10 degrees, and pull the lower front enclosure away from the lower chassis.
10. Reassemble the front enclosure, rear enclosure, and main chassis assembly
in the exact reverse order of disassembly. Follow the screw placement sequence
as illustrated in Figure 7-4.

Note: When reassembling the upper front enclosure, lift all three door
handles first.
To verify successful assembly, perform the PVT in Section 5.2.
Technical Service Manual
7-7
430-95424-003
SECTION 7 REPLACEABLE PARTS AND REPAIRS
UPPER FRONT ENCLOSURE
FRONT/REAR
ENCLOSURE GASKET (3)
PERIPHERAL
INTERFACE ASSEMBLY
6-32 x 1 1/4
PAN HEAD
SCREW (5)
6-32 x 2 3/4
PAN HEAD
SCREW (2)
#6 FLAT
WASHER (8)
6-32 x 1/2
PAN HEAD
SCREW
LOWER FRONT
ENCLOSURE
MAIN CHASSIS ASSEMBLY
8-32 x 3 1/2
PAN HEAD
SCREW (3)
REAR ENCLOSURE
#8 FLAT WASHER (3)
Figure 7-3.
430-95424-003
Front Enclosures, Rear Enclosure, and Main Chassis
7-8
Plum A+3 Infusion System
7.2
REPLACEMENT PROCEDURES
8
1
4
6
3
2
9
7
Figure 7-4.
5
Screw Placement Sequence
7.2.7
PERIPHERAL INTERFACE ASSEMBLY REPLACEMENT
CAUTION: Peripheral interface assembly replacement should only be performed
after receiving approval from Hospira.
Replacement parts for this procedure are:
Assembly, Peripheral Interface
Assembly, Cable, Peripheral #1
Assembly, Cable, Peripheral #2
To replace the peripheral interface assembly proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Remove the rear enclosure as described in Section 7.2.6.
4. Disconnect peripheral cable #1 from the peripheral interface PWA.
5. Disconnect peripheral cable #2 from the peripheral interface PWA.
6. Depress the retention clip and carefully pull the peripheral interface assembly away
from the infuser.

Note: W hen re mov ing the peripheral interface a ssembly,
note the placement guides where the peripheral interface PWA rests.
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430-95424-003
SECTION 7 REPLACEABLE PARTS AND REPAIRS
7. Install the replacement peripheral interface assembly in the exact reverse order
of removal.

Note: Verify the peripheral interface PWA is placed properly between
the guides and fits correctly into the CPU PWA.
8. Reinstall the batteries and connect the infuser to AC power.
9. Turn on the infuser, and verify completion of the self test.
To verify successful peripheral interface assembly replacement, perform the PVT
in Section 5.2.
7.2.8
PERIPHERAL PWA REPLACEMENT
The recommended tool for this procedure is a #2 Phillips screwdriver.
The replacement part for this procedure is:
PWA, Peripheral
Note:
Replacing the peripheral interface assembly does not change the existing
Biomed settings.
To replace a peripheral PWA see Figure 7-5, then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Remove the rear enclosure as described in Section 7.2.6.
4. To replace peripheral PWA #1, disconnect peripheral cable #1, depress the retention
clip, and carefully pull the peripheral PWA away from the infuser. Note the location
of the cable ties and mounts.
5. To replace peripheral PWA #2, disconnect peripheral cable #2, depress the retention
clip, and carefully pull the peripheral PWA away from the infuser. Note the location
of the cable ties and mounts.
6. Replace peripheral PWA #1 and peripheral PWA #2 in the exact reverse order
of removal.

Note: Verify the peripheral PWAs are placed properly between
the guides and fit correctly.
7. Reinstall the batteries and connect the infuser to AC power.
To verify successful peripheral PWA replacement, perform the PVT in Section 5.2.
430-95424-003
7 - 10
Plum A+3 Infusion System
7.2
REPLACEMENT PROCEDURES
PERIPHERAL PWA #2
PERIPHERAL PWA #1
PERIPHERAL CABLE #2
PERIPHERAL CABLE #1
RETENTION CLIPS
PERIPHERAL INTERFACE ASSEMBLY
Figure 7-5.
Peripheral Interface Assembly and Peripheral PWAs
7.2.9
PERIPHERAL COMPONENT REPLACEMENT
Peripheral component replacement includes the replacement of the volume control knob
and the peripheral cover.
To replace peripheral components see Figure 7-6, then proceed as detailed in the following
sections.
Technical Service Manual
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430-95424-003
SECTION 7 REPLACEABLE PARTS AND REPAIRS
7.2.9.1
VOLUME CONTROL KNOB REPLACEMENT
Recommended tools for this procedure are a medium size flat blade screwdriver, an X-acto
knife, and long needle nose pliers.
Replacement parts for this procedure are:
Assembly, Volume Control Knob
Cap, Knob
Cover, Knob
To replace the volume control knob see Figure 7-6, then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Remove the peripheral interface assembly as described in Section 7.2.7.
4. Using the X-acto knife, lift the volume control knob end cap away from the knob,
exposing a flat head screw.
5. Using the flat blade screwdriver, remove the screw that secures the knob.
6. Using long needle nose pliers, remove the knob cap, knob cover, and volume control
knob.
7. Install the replacement volume control knob in the exact reverse order of removal.
8. Install the peripheral interface assembly in the exact reverse order of removal.
9. Reinstall the batteries and connect the infuser to AC power.
Replacement of the volume control knob is routine maintenance and no verification
procedure is normally required. However, if the infuser may have been damaged during
the procedure, perform the PVT in Section 5.2.
7.2.9.2
PERIPHERAL COVER REPLACEMENT
Recommended tools for this procedure are a #2 Phillips screwdriver, set of nutdrivers,
an X-acto knife, custom nutdriver, and long needle nose pliers.
Replacement parts for this procedure are:
Cover, Peripheral
Shield, Spring, ESD
Seal, Rectangle
Seal, Round
Screw, 4-40 x 3/8, Hex Head, Nylon
Screw, 4-40 x 3/8, Pan Head, Phillips, with Washer
Nut, Hex, Nurse Call Jack
Nut, Hex, 4-40
Washer, Flat, #4, Nylon
To replace the peripheral cover see Figure 7-6, then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
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7 - 12
Plum A+3 Infusion System
7.2
REPLACEMENT PROCEDURES
3. Remove the peripheral interface assembly as described in Section 7.2.7.
4. Remove the volume control knob as described in Section 7.2.9.1.
5. Using a 5/16 nutdriver, remove the nut that secures the potentiometer
to the peripheral cover. Using the needle nose pliers, remove the lock washer.
6. Using the custom nutdriver, remove the hex nut that secures the nurse call jack
to the peripheral cover.
7. Inspect the rectangle seal and round seals and replace, if required.
8. Using the Phillips screwdriver, remove the screws that secure the peripheral
interface PWA to the cover.

Note: Note the position of the two hex nuts installed in the PWA mounting
brackets located on the peripheral cover. Retain the nuts for re-assembly.
9. Using a 3/16 nutdriver, remove the screws from the DataPort connector.
10. Inspect the ESD spring and replace, if required.
11. Install the replacement peripheral cover in the exact reverse order of removal.
12. Install the volume control knob and nurse call jack nut in the exact reverse order
of removal.
13. Install the peripheral interface assembly as described in Section 7.2.7.
14. Reinstall the batteries, and connect the device to AC power.
15. Turn on the infuser, and verify completion of the self test.
To verify successful peripheral cover replacement, perform the PVT in Section 5.2.
Technical Service Manual
7 - 13
430-95424-003
SECTION 7 REPLACEABLE PARTS AND REPAIRS
PERIPHERAL COVER
4-40 HEX NUT (4)
FLAT
WASHER (2)
ESD SPRING
4-40 x 3/8
HEX SCREW (2)
POTENTIOMETER
ROUND SEAL (2)
KNOB COVER
KNOB CAP
VOLUME
CONTROL KNOB
RECTANGLE
SEAL
NURSE CALL
JACK NUT
PERIPHERAL INTERFACE PWA
4-40 x 3/8
PAN HEAD
SCREW (2)
Figure 7-6.
430-95424-003
Peripheral Interface Assembly Components
7 - 14
Plum A+3 Infusion System
7.2
REPLACEMENT PROCEDURES
7.2.10
FRONT/REAR ENCLOSURE GASKET REPLACEMENT
The recommended tool for this procedure is needle nose pliers.
The replacement part for this procedure is:
Gasket, Front/Rear Enclosure

Note: Clean and remove any foreign matter on the replacement gasket or in the spaces
where the replacement gasket is to be installed.
To replace a front/rear enclosure gasket see Figure 7-3, then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Separate the front enclosure, rear enclosure, and main chassis assembly
as described in Section 7.2.6.
4. Using the needle nose pliers, remove the front/rear enclosure gasket from the upper
front enclosure (see Figure 7-3).
5. Install the replacement front/rear gasket in the exact reverse order of removal.
6. Join the front enclosure, rear enclosure, and main chassis assembly in the exact
reverse order of separation.
7. Reinstall the batteries and connect the infuser to AC power.
To verify successful front/rear enclosure gasket replacement, perform the PVT
in Section 5.2.
7.2.11
LOWER FRONT ENCLOSURE GASKET REPLACEMENT
Lower front enclosure gasket replacement includes the replacement of the following:
- EMI D-shape gaskets
- Keypad gaskets
- Top seal gaskets
To replace the lower front enclosure gaskets see Figure 7-7, then proceed as detailed
in the following sections.
Technical Service Manual
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430-95424-003
SECTION 7 REPLACEABLE PARTS AND REPAIRS
LOWER FRONT ENCLOSURE
TOP SEAL GASKET (3)
KEYPAD GASKET (3)
EMI D-SHAPE GASKET (4)
Figure 7-7.
Lower Front Enclosure Gaskets
7.2.11.1
EMI GASKET REPLACEMENT
The recommended tool for this procedure is needle nose pliers.
The replacement part for this procedure is:
Gasket, EMI, D-Shape, 6.62 in.
Gasket, EMI, D-Shape, 13 in.
To replace an EMI gasket see Figure 7-7, then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Separate the front enclosure, rear enclosure, and main chassis assembly
as described in Section 7.2.6.
4. Using the needle nose pliers, remove the EMI d-shape gasket.

Note: Clean and remove any foreign matter on the replacement gasket
or in the space where the replacement gasket is to be installed.
5. Remove the backing from the replacement EMI gasket to expose the adhesive
and press the gasket into place on the lower front enclosure.
6. Join the front enclosure, rear enclosure, and main chassis assembly in the exact
reverse order of separation.
7. Reinstall the batteries and connect the infuser to AC power.
To verify successful EMI gasket replacement, perform the PVT in Section 5.2.
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7 - 16
Plum A+3 Infusion System
7.2
REPLACEMENT PROCEDURES
7.2.11.2
KEYPAD GASKET REPLACEMENT
The recommended tool for this procedure is needle nose pliers.
The replacement part for this procedure is:
Gasket, Keypad
To replace a keypad gasket see Figure 7-7, then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Separate the front enclosure, rear enclosure, and main chassis assembly
as described in Section 7.2.6.
4. Using the needle nose pliers, remove the keypad gasket.

Note: Clean and remove any foreign matter on the replacement gasket
or in the space where the replacement gasket is to be installed.
5. Install the replacement keypad gasket in the gasket grooves. The gasket gap created
by the ends of the gasket must be placed at the top of the keypad window.
6. Join the front enclosure, rear enclosure, and main chassis assembly in the exact
reverse order of separation.
7. Reinstall the batteries and connect the infuser to AC power.
To verify successful keypad gasket replacement, perform the PVT in Section 5.2.
7.2.11.3
TOP SEAL GASKET REPLACEMENT
The recommended tool for this procedure is an X-acto knife.
The replacement part for this procedure is:
Gasket, Top Seal
To replace a top seal gasket see Figure 7-7, then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Separate the front enclosure, rear enclosure, and main chassis assembly
as described in Section 7.2.6.
3. Using the X-acto knife, remove the top seal gasket.
4. Using a light solvent, clean the area of all foreign matter.
5. Remove the backing from the replacement top seal gasket to expose the adhesive
and press the gasket into place on the lower front enclosure.
6. Join the front enclosure, rear enclosure, and main chassis assembly in the exact
reverse order of separation.
7. Reinstall the batteries and connect the infuser to AC power.
To verify successful top seal gasket replacement, perform the PVT in Section 5.2.
Technical Service Manual
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430-95424-003
SECTION 7 REPLACEABLE PARTS AND REPAIRS
7.2.12
REAR ENCLOSURE ASSEMBLY COMPONENT
REPLACEMENT
Rear enclosure assembly component replacement includes replacement of the following:
- Rear enclosure gaskets
- Pole clamp assembly, backing plate, and insulator
- Equipotential terminal
- Internal AC power cord
- AC connector
- Fuses
To replace the rear enclosure assembly components see Figure 7-8 and Figure 7-9,
then proceed as detailed in the following sections.
REAR ENCLOSURE
POLE CLAMP
ASSEMBLY
EQUIPOTENTIAL TERMINAL
4-40 x 3/8 FLAT HEAD
SCREW (2)
1.6 A FUSE (2)
AC CONNECTOR
FUSE DRAWER
6-32 x 1/2 PAN HEAD
SCREW (2)
Figure 7-8.
430-95424-003
RUBBER FOOT (2)
#6 LOCK WASHER (2)
External Rear Enclosure Assembly Components
7 - 18
Plum A+3 Infusion System
7.2
Figure 7-9.
Technical Service Manual
REPLACEMENT PROCEDURES
Internal Rear Enclosure Assembly Components
7 - 19
430-95424-003
SECTION 7 REPLACEABLE PARTS AND REPAIRS
7.2.12.1
POLE CLAMP ASSEMBLY AND BACKING PLATE
REPLACEMENT
Recommended tools for this procedure are a set of nutdrivers and a medium size flat blade
screwdriver.
Replacement parts for this procedure are:
Assembly, Pole Clamp
Plate, Backing, Pole Clamp
Tape, Insulation
Wire, Ground, Pole Clamp
Terminal, Equipotential
Screw, 10-32 x 1/2, Hex Head, Slotted
Nut, Hex, 6-32
Nut, Hex, 10 mm
To replace the pole clamp assembly and backing plate see Figure 7-8 and Figure 7-9,
then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Separate the front enclosure and rear enclosure as described in Section 7.2.6.
4. Using a 5/16 nutdriver, remove the nuts that secure the ground wire to the backing
plate.
5. Using a 10 mm nutdriver, remove the nuts and washers that secure the ground
wire to the equipotential terminal.
6. Inspect the ground wire and equipotential terminal and replace, if required.
7. Using the flat blade screwdriver, remove the screws that secure the pole clamp
assembly and backing plate, and remove the pole clamp and backing plate
from the rear enclosure.
8. Install the replacement pole clamp assembly and backing plate, using the screws
that were removed in step 7.
9. Completely cover the pole clamp backing plate with insulation tape. Press firmly
to adhere the insulation tape to the backing plate.
CAUTION: Assure the insulation tape covers the entire backing plate.
If the backing plate is exposed, the power supply PWA may be damaged
when power is applied to the infuser.
10. Secure the ground wire to the backing plate and equipotential terminal.
11. Join the front enclosure and rear enclosure in the exact reverse order of separation.
12. Reinstall the batteries and connect the infuser to AC power.
To verify successful pole clamp assembly and backing plate replacement, perform the PVT
in Section 5.2.
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Plum A+3 Infusion System
7.2
REPLACEMENT PROCEDURES
7.2.12.2
INTERNAL AC POWER CORD REPLACEMENT
Recommended tools for this procedure are a medium size flat blade screwdriver,
needle nose pliers, and a set of nutdrivers.
Replacement parts for this procedure are:
Cord, Internal, AC Power
Clamp, Internal Power Cord
Wire, Ground, AC Power
Screw, 4-40 x 3/8, Hex Head, Slotted
Washer, Flat, 1/4
Washer, Lock, 1/4
To replace the internal AC power cord see Figure 7-9, then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Separate the front and rear enclosures as described in Section 7.2.6.
4. Using the flat blade screwdriver, remove the screws from the internal power cord
clamp.
5. Using the needle nose pliers, remove the wires from the AC connector.
6. Using a 10 mm nutdriver, remove the hex nuts and washers that secure the AC
ground wire to the equipotential terminal.
7. Inspect the ground wire and replace, if required.
8. Install the replacement internal AC power cord in the exact reverse order of removal.
9. Join the front enclosure and rear enclosure in the exact reverse order of separation.
10. Reinstall the batteries and connect the infuser to AC power.
To verify successful internal AC power cord replacement, perform the PVT in Section 5.2.
7.2.12.3
AC CONNECTOR REPLACEMENT
Recommended tools for this procedure are needle nose pliers and a #2 Phillips screwdriver.
Replacement parts for this procedure are:
Connector, AC
Screw, 4-40 x 3/8, Flat Head, Phillips
To replace the AC connector see Figure 7-8, then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Separate the rear
in Section 7.2.6.
enclosure
and
main
chassis
assembly
as
described
4. Remove the AC power cord retainer and AC power cord as described in Section 7.2.5.
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430-95424-003
SECTION 7 REPLACEABLE PARTS AND REPAIRS
5. Using the needle nose pliers, remove the internal power cord wires and the AC
ground wire from the AC connector.
6. Using the Phillips screwdriver, remove the screws that secure the AC connector
to the rear enclosure.
7. Install the replacement AC connector in the exact reverse order of removal.
8. Join the rear enclosure and main chassis assembly in the exact reverse order
of separation.
9. Reinstall the batteries and connect the infuser to AC power.
To verify successful AC connector replacement, perform the PVT in Section 5.2.
7.2.12.4
FUSE REPLACEMENT
Recommended tools for this procedure are a #2 Phillips screwdriver and a small flat blade
screwdriver.
Replacement parts for this procedure are:
Fuse, 1.6 A, 250 V
Drawer, Fuse
To replace the fuses see Figure 7-8, then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Separate the rear
in Section 7.2.6.
enclosure
and
main
chassis
assembly
as
described
4. Remove the power cord retainer and power cord as described in Section 7.2.5.
5. Locate the fuse drawer directly below the AC power receptacle. Insert the flat blade
screwdriver between the right locking tab of the fuse drawer and the AC connector
housing. Press the tab toward the center of the fuse drawer to release it.
Verify the fuse drawer moves slightly outward.
6. Repeat step 5 to release the left locking tab. Grasp both locking tabs and remove
the fuse drawer from the AC connector.
7. Inspect the fuse drawer and replace, if required.
CAUTION: Confirm the replacement fuse rating is identical
to the rating indicated on the fuse drawer.
8. Remove the fuses and replace with approved fuses only (see Section 8). Do not use
any other fuse types.
9. Insert the fuse drawer into the receptacle, then press the fuse drawer into
the AC connector until it clicks into position.
10. Reinstall the power cord retainer and power cord in the exact reverse order
of disassembly.
11. Reinstall the batteries and connect the infuser to AC power.
To verify successful fuse replacement, perform the PVT in Section 5.2.
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Plum A+3 Infusion System
7.2
REPLACEMENT PROCEDURES
7.2.12.5
REAR ENCLOSURE GASKET REPLACEMENT
The recommended tool for this procedure is needle nose pliers.
Replacement parts for this procedure are:
Gasket, Rear Enclosure, 20 13/16
Gasket, Rear Enclosure, 45 7/8
To replace a rear enclosure gasket see Figure 7-9, then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Separate the rear
in Section 7.2.6.
enclosure
and
main
chassis
assembly
as
described
4. Using the needle nose pliers, remove the rear enclosure gasket.

Note: Clean and remove any foreign matter on the replacement gasket or in
the space where the replacement gasket is to be installed.
5. Install the replacement rear enclosure gasket by pressing it into the gasket channel.
6. Join the front enclosure and rear enclosure in the exact reverse order of separation.
7. Reinstall the batteries and connect the infuser to AC power.
To verify successful rear enclosure gasket replacement, perform the PVT in Section 5.2.
7.2.13
MINIPOLE ASSEMBLY REPLACEMENT
The minipole assembly is an accessory that attaches to the infuser through two holes
in the pole clamp extrusion and is held in place by a cotter ring. The cotter ring passes
through a hole near the end of the longer of the two vertical rods on the bag hanger,
and prevents the removal of the minipole from the holes in the pole clamp.
The recommended tool for this procedure is needle nose pliers.
Replacement parts for this procedure are:
Assembly, Minipole
Ring, Cotter
To replace the minipole assembly see Figure 7-13, then proceed as follows:
1. Turn off the infuser and disconnect the device from AC power.
2. Place the infuser face down on a soft surface.
3. Grasp the cotter ring and twist, rotate, and remove the cotter ring from the rod hole.
4. Remove the bag hanger from the pole clamp rod holes, and remove the minipole.
5. Install the replacement minipole assembly in the exact reverse order of removal.
Replacement of the minipole assembly is routine maintenance and no verification
procedure is normally required. However, if the infuser may have been damaged during
the procedure perform the PVT as described in Section 5.2.
Technical Service Manual
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430-95424-003
SECTION 7 REPLACEABLE PARTS AND REPAIRS
CLUTCH HOUSING
CLUTCH SPRING
BAG HANGER
COTTER RING
Figure 7-10.
Minipole Assembly
7.2.14
MAIN CHASSIS ASSEMBLY COMPONENT
REPLACEMENT
Main chassis assembly component replacement includes replacement of the following:
- Power supply PWA
- Mechanism assembly
- Keypad
- Cassette door
- Display
- Fluid shield
- CPU PWA
- Opener handle
- Piezo alarm
To replace the main chassis assembly components see Figure 7-11, then proceed
as detailed in the following sections.
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Plum A+3 Infusion System
7.2
REPLACEMENT PROCEDURES
MECHANISM/CHASSIS BUMPER (6)
MECHANISM ASSEMBLY (3)
6-32 x 1/2
HEX HEAD
SCREW (9)
INSULATION TAPE (3)
UPPER
CHASSIS
KEYPAD (3)
CPU/DRIVER
CABLE (3)
4-24 x 1/4
PAN HEAD
SCREW (3)
4-40 x 3/16
HEX HEAD
SCREW (12)
LOWER
CHASSIS
DISPLAY ASSEMBLY (3)
Figure 7-11.
Technical Service Manual
Main Chassis Assembly Components (1 of 2)
7 - 25
430-95424-003
SECTION 7 REPLACEABLE PARTS AND REPAIRS
4-40 x 3/8 HEX HEAD SCREW (6)
PIEZO ALARM (3)
CPU/DRIVER CABLE (3)
INSULATION TAPE (3)
POWER SUPPLY/
BATTERY CABLE (3)
MOTOR POWER
CABLE (3)
PERIPHERAL PWA (2)
POWER SUPPLY (3)
PERIPHERAL
CABLE #2
4-40 x 1/4
HEX HEAD SCREW (3)
CPU PWA (3)
PERIPHERAL INTERFACE PWA
PERIPHERAL
CABLE #1
Figure 7-11.
430-95424-003
Main Chassis Assembly Components (2 of 2)
7 - 26
Plum A+3 Infusion System
7.2
REPLACEMENT PROCEDURES
7.2.14.1
POWER SUPPLY PWA REPLACEMENT
The recommended tool for this procedure is a medium size flat blade screwdriver.
Replacement parts for this procedure are:
PWA, Power Supply
Assembly, Cable, Power Supply/Battery
To replace a power supply PWA see Figure 7-11 (2 of 2), then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Separate the rear enclosure from the main chassis as described in Section 7.2.6.
4. Disconnect the battery cable from the power supply PWA.
5. Disconnect the peripheral cables from the peripheral PWAs.
6. Remove the power supply PWA by pressing down on the finger tab at the bottom
front of the power supply PWA. Slide the power supply PWA away from the CPU PWA.
7. Install the replacement power supply PWA in the exact reverse order of removal.


Note: Verify the replacement power supply PWA connects to the CPU
PWA correctly to avoid misalignment.
Note: If an alarm sounds, press [ON/OFF] to deactivate the alarm.
8. Join the rear enclosure and main chassis assembly in the exact reverse order
of separation.
9. Reinstall the batteries and connect the infuser to AC power.
To verify successful power supply PWA replacement, perform the PVT in Section 5.2.
7.2.14.2
KEYPAD REPLACEMENT
Recommended tools for this procedure are a #2 Phillips screwdriver, medium size flat blade
screwdriver, and an X-acto knife.
Replacement parts for this procedure are:
Assembly, Keypad
Tape, Insulation
Screw, 4-24 x 1/4, Pan Head, Phillips
To replace a keypad see Figure 7-11 (1 of 2), then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Separate the front enclosure, rear enclosure, and main chassis assembly
as described in Section 7.2.6.
4. Disconnect the keypad cable from the CPU PWA.
5. Using the X-acto knife, lift the white insulation tape that secures the grounding tab
to the main chassis.
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430-95424-003
SECTION 7 REPLACEABLE PARTS AND REPAIRS
6. Using the Phillips screwdriver, remove the screw that secures the keypad
and display to the lower main chassis.
7. Carefully disconnect the flex ribbon cable from the display by pushing the connector
locking tabs down.
8. Using the flat blade screwdriver, separate the keypad and display by removing
the screws that secure the keypad to the display.
9. Install the replacement keypad in the exact reverse order of removal.
10. Install the keypad and display in the exact reverse order of removal.
11. Join the front enclosure, rear enclosure, and main chassis assembly in the exact
reverse order of separation.
12. Reinstall the batteries and connect the infuser to AC power.
To verify successful keypad replacement, perform the PVT in Section 5.2.
7.2.14.3
DISPLAY ASSEMBLY REPLACEMENT
Recommended tools for this procedure are a #2 Phillips screwdriver and a medium size
flat blade screwdriver.
Replacement parts for this procedure are:
Assembly, Display
Screw, 4-40 x 3/16, Hex Head, Slotted, with Washer
To replace a display assembly see Figure 7-11 (1 of 2), then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Separate the front enclosure, rear enclosure, and main chassis assembly
as described in Section 7.2.6.
4. Remove the keypad as described in Section 7.2.14.2.
5. Disconnect the display cable from the CPU PWA and remove the display.
6. Install the replacement display in the exact reverse order of removal.
7. Reassemble the keypad and display assembly.
8. Join the front enclosure, rear enclosure, and main chassis assembly in the exact
reverse order of separation.
9. Reinstall the batteries and connect the infuser to AC power.
To verify successful display assembly replacement, perform the PVT in Section 5.2.
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Plum A+3 Infusion System
7.2
REPLACEMENT PROCEDURES
7.2.14.4
CPU/DRIVER CABLE REPLACEMENT
The recommended tool for this procedure is an X-acto knife.
Replacement parts for this procedure are:
Assembly, Cable, CPU/Driver
Tape, Ferrite
Tape, Insulation
To replace a CPU/driver cable see Figure 7-11 (1 of 2), Figure 7-12, and Figure 7-13,
then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Separate the front enclosure, rear enclosure, and main chassis assembly
as described in Section 7.2.6.
4. Remove the peripheral interface PWA as described in Section 7.2.7.
5. Remove the peripheral PWAs as described in Section 7.2.8.
6. Remove the power supply PWA as described in Section 7.2.14.1.
7. Disconnect the CPU/driver cable from the mechanism assembly.
8. Remove the insulating tape that secures the CPU/driver cable and ferrite
to the center tab (see Figure 7-13).
9. Remove both ends of ferrite tape from the center tab. Cut off the adhesive strip
on one side of the ferrite tape and pull through the ferrite (see Figure 7-13).
10. Remove the CPU/driver cable from the center tab.
11. Remove the CPU PWA as described in Section 7.2.14.6.
12. Disconnect the CPU/driver cable from the CPU PWA.
13. Insert ferrite tape through the ferrite of the replacement CPU/driver cable.
Assure the adhesive side is facing away from the cable.
14. Position the ferrite between the two line marks on the cable.
15. Route the cable around the tabs as shown in Figure 7-12. Assure the pin 1 stripe
of the cable faces the front of the infuser. Ferrite should be on the left side
of the center tab and between the cable markings.
16. Remove the backing to expose the adhesive and apply both ends of tape completely
to the surface of the center tab (see Figure 7-13).
17. Wrap insulation tape around the ferrite and center tab (see Figure 7-13).
18. Connect the CPU/driver cable to the mechanism assembly.
19. Reassemble the infuser in the exact reverse order of disassembly.
20. Reinstall the batteries and connect the infuser to AC power.
To verify successful CPU/driver cable replacement, perform the PVT in Section 5.2.
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430-95424-003
SECTION 7 REPLACEABLE PARTS AND REPAIRS
TOP TAB
CABLE
CENTER TAB
FERRITE
LOWER TAB
Figure 7-12.
430-95424-003
CPU/Driver Cable Routing
7 - 30
Plum A+3 Infusion System
7.2
REPLACEMENT PROCEDURES
FERRITE
INSULATION TAPE
Figure 7-13.
Ferrite Tape Positioning (1 of 2)
FERRITE
CENTER TAB
TAPE
Figure 7-13.
Technical Service Manual
Ferrite Tape Positioning (2 of 2)
7 - 31
430-95424-003
SECTION 7 REPLACEABLE PARTS AND REPAIRS
7.2.14.5
MOTOR POWER CABLE REPLACEMENT
The recommended tool for this procedure is a medium size flat blade screwdriver.
The replacement part for this procedure is:
Assembly, Cable, Motor Power
To replace a motor power cable see Figure 7-11 (2 of 2), then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Separate the front enclosure, rear enclosure, and main chassis assembly
as described in Section 7.2.6.
4. Disconnect the motor power cable from the CPU PWA.
5. Remove the mechanism assembly as described in Section 7.2.14.8.
6. Disconnect the motor power cable from the mechanism assembly.
7. Install the replacement motor power cable in the exact reverse order of removal.
8. Join the front enclosure, rear enclosure, and main chassis assembly in the exact
reverse order of separation.
9. Reinstall the batteries and connect the infuser to AC power.
To verify successful motor power cable replacement, perform the PVT in Section 5.2.
7.2.14.6
CPU PWA REPLACEMENT
Recommended tools for this procedure are a medium size flat blade screwdriver
and #2 Phillips screwdriver.
Replacement parts for this procedure are:
PWA, CPU
Screw, 4-40 x 1/4, Hex Head, Slotted, with Washer
To replace a CPU PWA see Figure 7-11 (2 of 2), then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Separate the front enclosure, rear enclosure, and main chassis assembly
as described in Section 7.2.6.
4. Remove the peripheral interface assembly as described in Section 7.2.7.
5. Remove the peripheral PWAs as described in Section 7.2.8.
6. Remove the power supply PWA as described in Section 7.2.14.1.
7. Disconnect the keypad ribbon cable from the CPU PWA.
8. Disconnect the display cable from the CPU PWA.
9. Disconnect the CPU/driver cable from the mechanism assembly.
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Plum A+3 Infusion System
7.2
REPLACEMENT PROCEDURES
10. Disconnect the piezo alarm cable from the CPU PWA.
11. Using the Phillips screwdriver, remove the screw from the bottom of the lower main
chassis assembly.
12. Slide the CPU PWA out of the main chassis until J5 on the CPU PWA is accessible.
13. Using the flat blade screwdriver, release the locking tabs that secure the flex cable
to the CPU PWA.
14. Install the replacement CPU PWA in the exact reverse order of removal.
15. Join the front enclosure, rear enclosure, and main chassis assembly in the exact
reverse order of separation.
16. Reinstall the batteries and connect the infuser to AC power.
To verify successful CPU PWA replacement, perform the PVT in Section 5.2.
7.2.14.7
PIEZO ALARM ASSEMBLY REPLACEMENT
The recommended tool for this procedure is a medium size flat blade screwdriver.
Replacement parts for this procedure are:
Assembly, Piezo Alarm
Screw, 4-40 x 3/8, Hex Head, Slotted, with Washer
To replace a piezo alarm assembly see Figure 7-11 (2 of 2), then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Separate the front enclosure, rear enclosure, and main chassis assembly
as described in Section 7.2.6.
4. Using the flat blade screwdriver, separate the upper and lower main chassis
assemblies by removing the screws from the upper main chassis.
5. Expose the piezo alarm by lifting the upper main chassis. Place the chassis
on the work surface.
6. Using the flat blade screwdriver, remove the screws that secure the piezo alarm
to the lower main chassis assembly.
7. Disconnect the piezo alarm cable from the CPU PWA.

Note: When installing, route the piezo alarm cable above the CPU/driver
cable.
8. Install the replacement piezo alarm assembly in the exact reverse order of removal.
9. Join the front enclosure, rear enclosure, and main chassis assembly in the exact
reverse order of separation.
10. Reinstall the batteries and connect the infuser to AC power.
To verify successful piezo alarm assembly replacement, perform the PVT in Section 5.2.
Technical Service Manual
7 - 33
430-95424-003
SECTION 7 REPLACEABLE PARTS AND REPAIRS
7.2.14.8
MECHANISM ASSEMBLY REPLACEMENT

Note: Replacing the mechanism changes the biomed settings to those stored
in the replacement mechanism assembly.
Recommended tools for this procedure are a medium size flat blade screwdriver
and #2 Phillips screwdriver.
Replacement parts for this procedure are:
Assembly, Mechanism
Bumper, Mechanism/Chassis
Screw, 6-32 x 1/2, Hex Head, Slotted, with Washer
To replace a mechanism assembly see Figure 7-11 (1 of 2), then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Separate the front enclosure, rear enclosure, and main chassis assembly
as described in Section 7.2.6.
4. Disconnect the CPU/driver cable from the mechanism assembly.
5. Disconnect the motor power cable from the power supply PWA.
6. Using the flat blade screwdriver, separate the upper and lower main chassis
assemblies by removing the screws from the upper main chassis.
7. Lift the upper main chassis assembly and place it on the work surface.
8. Using the flat blade screwdriver, remove the screw that secures the mechanism
assembly to the upper main chassis assembly. Slide the mechanism assembly away
from the main chassis assembly.
9. Disconnect the motor power cable from the mechanism assembly.
10. Inspect the mechanism/chassis bumpers and replace, if required.
11. Install the replacement mechanism assembly in the exact reverse order of removal.
12. Join the upper and lower main chassis assembly in the exact reverse order
of separation.
13. Using fingers, tighten the remaining front screws.
14. Using the nutdriver, tighten the remaining front screws another 1/4 to 3/8 turn.
15. Join the front enclosure, rear enclosure, and main chassis assembly in the exact
reverse order of separation.
16. Reinstall the batteries and connect the infuser to AC power.
To verify successful mechanism assembly replacement, perform the PVT in Section 5.2.
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Plum A+3 Infusion System
7.2
REPLACEMENT PROCEDURES
7.2.14.9
CASSETTE DOOR AND FLUID SHIELD REPLACEMENT
The recommended tool for this procedure is a medium size flat blade screwdriver.
Replacement parts for this procedure are:
Assembly, Cassette Door
Assembly, Fluid Shield
Cap, Door Pivot
Spring, Extension
Screw, 4-40 x 3/8, Hex Head, Slotted, with Washer
To replace the cassette door and fluid shield see Figure 7-14 and Figure 7-15, then proceed
as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Separate the front enclosure, rear enclosure, and main chassis assembly
as described in Section 7.2.6.
4. Remove the mechanism assembly as described in Section 7.2.14.8.
5. Using the flat blade screwdriver, remove the screw that secures the door pivot cap
to the mechanism assembly.
6. Disengage the cassette door from the opener handle assembly and remove the door.
7. Disengage the clips on the back side of the fluid shield that retain the upper portion
of the fluid shield to the mechanism assembly.
8. Lift the locking pins to release the fluid shield/driver flex connector, and disconnect
the flex connector from the driver PWA.
9. Pull the shield away from the top of the mechanism assembly at an approximate
15 degree angle. Pull the shield up and away, clearing the mechanism assembly
pins and plunger.
10. Align the mechanism assembly pins, then install the replacement fluid shield
in the exact reverse order of removal.
11. Install the replacement cassette door in the exact reverse order of removal.
12. Replace the mechanism assembly in the exact reverse order of removal.
13. Join the front enclosure, rear enclosure, and main chassis assembly in the exact
reverse order of separation.
14. Reinstall the batteries and connect the infuser to AC power.
To verify successful cassette door and fluid shield replacement, perform the PVT
in Section 5.2.
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430-95424-003
SECTION 7 REPLACEABLE PARTS AND REPAIRS
APPROX 15 DEGREE
FLUID SHIELD
MECHANISM
ASSEMBLY
CASSETTE DOOR
Figure 7-14.
430-95424-003
Fluid Shield Replacement
7 - 36
Plum A+3 Infusion System
7.2
REPLACEMENT PROCEDURES
FLEX
CONNECTOR
TORSION
SPRING
RETAINING
RING
MECHANISM
ASSEMBLY
CASSETTE DOOR
OPENER
HANDLE
4-40 x 3/8
HEX HEAD
SCREW
WITH WASHER
3/32 PUSH-ON
RETAINING RING
DOOR PIVOT CAP
Figure 7-15.
Technical Service Manual
Cassette Door and Opener Handle Assembly Replacement
7 - 37
430-95424-003
SECTION 7 REPLACEABLE PARTS AND REPAIRS
7.2.14.10
OPENER HANDLE ASSEMBLY REPLACEMENT
The recommended tool for this procedure is a medium size flat blade screwdriver.
Replacement parts for this procedure are:
Assembly, Opener Handle
Link, Door
Ring, Retaining, Push-On
To replace the opener handle assembly see Figure 7-15, then proceed as follows:
1. Turn off the infuser, and disconnect the device from AC power.
2. Remove the batteries as described in Section 7.2.4.
3. Separate the front enclosure, rear enclosure, and main chassis assembly
as described in Section 7.2.6.
4. Remove the mechanism assembly as described in Section 7.2.14.8.
5. Open the cassette door. Disengage and fully open the cassette door from the opener
handle assembly.
6. Close the opener handle assembly.
7. Remove and inspect the retaining ring and replace, if required.
8. Remove and inspect the door link and replace, if required.
9. Insert the flat blade screwdriver between the opener handle
and the mechanism assembly. Carefully pry the assemblies apart.

assembly
Note: The torsion spring may fall free.
10. Install the replacement opener handle assembly in the exact reverse order
of removal. Confirm the opener handle is aligned properly.
11. Replace the mechanism assembly in the exact reverse order of removal.
12. Join the front enclosure, rear enclosure, and main chassis assembly in the exact
reverse order of separation.
13. Reinstall the batteries and connect the infuser to AC power.
To verify successful opener handle assembly replacement, perform the PVT in Section 5.2.
430-95424-003
7 - 38
Plum A+3 Infusion System
Section 8
SPECIFICATIONS
The following specifications apply to the Plum A+3 infusion system.
PHYSICAL
Dimensions: Approximately 19 H x 15 W x 14 D inches
(excluding pole clamp and power cord storage)
Weight: Approximately 28 lbs (with batteries)
Casing: High-impact plastic
ELECTRICAL
Power Requirements: 95-132 VAC; 47-62 Hz; 90 W
Power Cord: Hospital-grade AC cord; 10 feet;
with transparent plug and retainer plate
Fuses: 0.5 A, 250 VAC
Battery: Three; sealed lead-acid; rechargeable; 6 V; internal
Battery Operation: A fully charged new battery provides approximately three
hours of operation at 125 mL/hr or less, or delivers 250 mL
if > 126 mL/hr.
Operation time is measured from initial pumping
to the Depleted Battery alarm.
The infuser should be operated on battery power for three
continuous hours every six months for optimum
performance and battery life.
Recharge: The battery charges whenever the infuser is connected
to AC power.
If the infuser is operating at 125 mL/hr on one line, a full
recharge takes less than six hours.
Self-Discharge: 50 % of charge is retained for a minimum of one month when
the infuser is not connected to AC power or is not operating.
Nurse Call System: Default: Normally open (NO)
Contact Hospira to make an internal adjustment to change
the device from normally open (NO) to normally closed (NC).
Technical Service Manual
8-1
430-95424-003
SECTION 8 SPECIFICATIONS
ENVIRONMENT
Operating: 41° to 104° F (5° to 40° C); 10 % to 90 % relative humidity
Transporting and
Storage: -4° to 140° F (-20° to 60° C); 10 % to 90 % relative humidity
Atmospheric Pressure: 0 - 10,000 feet (0 - 3000 meters)
or equivalent atmospheric pressure
Relative Humidity: 10 - 90 % (104° F max)
DELIVERY RATE RANGE
Lines A and B: 0.1 to 99.9 mL/hr (in 0.1 mL/hr increments)
100 to 999 mL/hr (in 1 mL/hr increments)
Concurrent Delivery: 0.5 mL/hr minimum for each line
PlumSet: 500 mL/hr cumulative (A+B) maximum
KVO: 1.0 mL/hr or the last primary delivery rate, whichever is less
VTBI RANGE: 0.1 to 99.9 mL (in 0.1 mL/hr increments)
100 to 9999 mL (in 1 mL/hr increments)
OCCLUSION ALARM
AND LIMITS
Distal: The distal occlusion alarm sounds after the distal tubing
or set outlet fitting becomes occluded.
Proximal: The proximal occlusion alarm sounds within two pumping
cycles when the tubing proximal to the cassette becomes
occluded.
Distal Pressure Limit
(Without Alarm): 1 to 15 psi; maximum pressure limit is user-selectable;
factory setting is 6 psi
Maximum Infusion
Pressure: 20 psi
AIR-IN-LINE ALARM
PlumSet (Distal): Bolus: 0.5 mL of air or larger
Cumulative: 0.5 mL of air out of 5.3 mL of fluid
PlumSet (Proximal): Bolus at 0.5 mL, total 1.0 mL (0.5 mL concurrent)
430-95424-003
8-2
Plum A+3 Infusion System
SECTION 9 DRAWINGS
Section 9
DRAWINGS
Figure 9-1 through Figure 9-10 show the Illustrated Parts Breakdown (IPB) and assembly
drawings. Table 9-1 lists drawings by figure number and title. Table 9-2 identifies parts
by index numbers which correlate to Figure 9-1.
Drawings in Section 9 are provided as information only, and may not exactly reflect current
product configuration.
Table 9-1.
Drawings
Figure Number
Title
9-1
Illustrated Parts Breakdown (2 sheets)
9-2
Front Enclosures, Rear Enclosure, and Main Chassis Assembly
9-3
Front Enclosure Assemblies
9-4
Rear Enclosure Assembly (2 sheets)
9-5
Peripheral Interface Assembly
9-6
Main Chassis Assembly (2 sheets)
9-7
CPU PWA, Display, and Keypad
9-8
CPU PWA and Main Chassis
9-9
AC Power Cord, Retainer, Batteries, and Minipole
9-10
Mechanism Assembly
Table 9-2.
Index
Number
IPB for the Infuser
Nomenclature
Replacement
Procedure
1
Enclosure, Rear
Section 7.2.6
2
Enclosure, Lower Front
Section 7.2.6
3
Enclosure, Upper Front
Section 7.2.6
4
Assembly, Main Chassis
Section 7.2.6
5
Chassis, Lower
Section 7.2.6
6
Chassis, Upper
Section 7.2.6
7
PWA, Power Supply
Section 7.2.14.1
8
Assembly, Mechanism
Section 7.2.14.8
Technical Service Manual
9-1
430-95424-003
SECTION 9 DRAWINGS
Table 9-2.
Index No.
IPB for the Infuser
Nomenclature
Replacement
Procedure
9
Assembly, Fluid Shield
Section 7.2.14.9
10
Assembly, Opener Handle
Section 7.2.14.10
11
Assembly, Cassette Door
Section 7.2.14.9
12
PWA, Peripheral
Section 7.2.8
13
Assembly, Peripheral Interface
Section 7.2.7
14
Cover, Peripheral
Section 7.2.9.2
15
Shield, Spring, ESD
Section 7.2.9.2
16
Assembly, Keypad
Section 7.2.14.2
17
Assembly, Display
Section 7.2.14.3
18
PWA, CPU
Section 7.2.14.6
19
Bumper, Mechanism/Chassis
Section 7.2.14.8
20
Pad, Rubber Foot
Section 7.2.3
21
Link, Door
Section 7.2.14.10
22
Spring, Extension
Section 7.2.14.9
23
Cordset, AC Power, Hospital Grade, Detachable
Section 7.2.5
24
Retainer, Power Cord
Section 7.2.5
25
Strap, Velcro, 1 3/4 in. x 10 in., Black
Section 7.2.5
26
Plate, Backing, Pole Clamp
Section 7.2.12.1
27
Assembly, Pole Clamp
Section 7.2.12.1
28
Wire, Ground, Pole Clamp
Section 7.2.12.1
29
Cord, AC Power, Internal
Section 7.2.12.2
30
Clamp, Internal AC Power Cord
Section 7.2.12.2
31
Assembly, Cable, Motor Power
Section 7.2.14.5
32
Assembly, Cable, Power Supply/Battery
Section 7.2.14.1
33
Wire, Ground, AC Power
Section 7.2.12.2
34
Assembly, Volume Control Knob, Gray
Section 7.2.9.1
35
Cap, Knob
Section 7.2.9.1
36
Cover, Knob
Section 7.2.9.1
430-95424-003
9-2
Plum A+3 Infusion System
SECTION 9 DRAWINGS
Table 9-2.
Index No.
IPB for the Infuser
Nomenclature
Replacement
Procedure
37
Assembly, Minipole
A: Hanger, Bag
B: Housing, Clutch
C: Ring, Cotter
D: Spring, Clutch
Section 7.2.13
38
Assembly, Cable, Peripheral #2
Section 7.2.7
39
Assembly, Cable, Peripheral #1
Section 7.2.7
40
Assembly, Cable, CPU/Driver
Section 7.2.14.4
41
Assembly, Piezo Alarm
Section 7.2.14.7
42
Battery
Section 7.2.4
43
Assembly, Wire Harness, Battery
Section 7.2.4
44
Door, Battery
Section 7.2.4
45
Pad, Battery Door
Section 7.2.4
46
Tape, Insulation
Section 7.2.14.4
47
Tape, Ferrite
Section 7.2.14.4
48
Gasket, EMI, D-Shape, 6.62 in.
Section 7.2.11.1
49
Gasket, EMI, D-Shape, 13.0 in.
Section 7.2.11.1
50
Gasket, Front/Rear Enclosure
Section 7.2.10
51
Gasket, Rear Enclosure, 45 7/8 L
Section 7.2.12.5
52
Gasket, Rear Enclosure, 20 13/16 L
Section 7.2.12.5
53
Gasket, Keypad
Section 7.2.11.2
54
Gasket, Top Seal
Section 7.2.11.3
55
Cap, Door Pivot
Section 7.2.14.9
56
Connector, AC
Section 7.2.12.3
57
Drawer, Fuse
Section 7.2.12.4
58
Fuse, 1.6 A, 250 V
Section 7.2.12.4
59
Terminal, Equipotential
Section 7.2.12.1
60
Seal, Round
Section 7.2.9.2
61
Seal, Rectangle
Section 7.2.9.2
62
Mount, Cable Tie
Section 7.2.11
63
Tie, Cable
Section 7.2.11
64
Ring, Retaining, Push-On
Section 7.2.4
Technical Service Manual
9-3
430-95424-003
SECTION 9 DRAWINGS
Table 9-2.
Index No.
IPB for the Infuser
Nomenclature
Replacement
Procedure
65
Screw, 4-24 x 1/4, Pan Head, Phillips, SS
As applicable
66
Screw, 4-40 x 1/4, Hex Head, Slotted, with Washer
As applicable
67
Screw, 4-40 x 3/8, Pan Head, Phillips, SS
As applicable
68
Screw, 4-40 x 3/8, Hex Head, Nylon
Section 7.2.9.2
69
Screw, 4-40 x 3/8, Hex Head, Slotted, with Washer
As applicable
70
Screw, 4-40 x 3/16, Hex Head, Slotted, with Washer
As applicable
71
Screw, 6-32 x 1/2, Pan Head, Phillips, SS
As applicable
72
Screw, 6-32 x 1 1/4, Pan Head, Phillips, SS
As applicable
73
Screw, 6-32 x 1/2, Hex Head, Slotted, with Washer
As applicable
74
Screw, 10-32 x 1/2, Hex Head, Slotted, with Washer
Section 7.2.12.1
75
Screw, 6-32 x 2 3/4, Pan Head, Phillips, SS
Section 7.2.6
76
Screw, 8-32 x 3 1/2, Pan Head, Phillips, SS
Section 7.2.6
77
Washer, Flat, 1/4, SS
As applicable
78
Washer, Flat, #6, SS
As applicable
79
Washer, Flat, #8, SS
As applicable
80
Washer, Flat, .128, Nylon
Section 7.2.9.2
81
Washer, Lock, Split, #6
As applicable
82
Washer, Lock, 1/4, .025 Thk., Internal Tooth
As applicable
83
Nut, Hex, 4-40
As applicable
84
Nut, Hex, 10 mm
Section 7.2.12.1
85
Nut, Hex, 6-32
As applicable
86
Nut, Hex, Nurse Call Jack
Section 7.2.9.2
430-95424-003
9-4
Plum A+3 Infusion System
1
8
3
2
9
23
10
11
24
25
26
4
12
14
13
27
28
15
29
6
5
16
17
30
31
18
32
21
20
19
33
7
35
34
22
36
37
37A
37B
HOSPIRA, INC.
37D
Figure 9-1.
Illustrated Parts Breakdown
37C
DRAWING NO.
NOT APPLICABLE
Technical Service Manual
9-5
Rev. N/A
Sheet 1 of 2
430-95424-003
SECTION 9 DRAWINGS
This page intentionally left blank.
430-95424-003
9-6
Plum A+3 Infusion System
39
38
56
57
40
41
58
59
42
43
61
60
75
44
63
62
76
77
66
65
64
78
47
46
45
79
68
67
80
48
81
49
70
69
82
50
83
51
71
84
85
52
53
54
73
72
55
74
86
HOSPIRA, INC.
Figure 9-1.
Illustrated Parts Breakdown
DRAWING NO.
NOT APPLICABLE
Technical Service Manual
9-7
Rev. N/A
Sheet 2 of 2
430-95424-003
SECTION 9 DRAWINGS
This page intentionally left blank.
430-95424-003
9-8
Plum A+3 Infusion System
50
3
78
75
1
2
71
4
79
76
78
HOSPIRA, INC.
Figure 9-2.
Front Enclosures, Rear Enclosure,
and Main Chassis Assembly
72
DRAWING NO.
NOT APPLICABLE
Technical Service Manual
9-9
Rev. N/A
Sheet 1 of 1
430-95424-003
SECTION 9 DRAWINGS
This page intentionally left blank.
430-95424-003
9 - 10
Plum A+3 Infusion System
3
50
54
2
20
48
HOSPIRA, INC.
78
53
71
Figure 9-3.
Front Enclosure Assemblies
49
DRAWING NO.
NOT APPLICABLE
Technical Service Manual
9 - 11
Rev. N/A
Sheet 1 of 1
430-95424-003
SECTION 9 DRAWINGS
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9 - 12
Plum A+3 Infusion System
26
74
28
85
52
82
30
68
77
33
82
84
1
82
84
29
HOSPIRA, INC.
51
Figure 9-4.
Rear Enclosure Assembly
DRAWING NO.
NOT APPLICABLE
Technical Service Manual
9 - 13
Rev. N/A
Sheet 1 of 2
430-95424-003
SECTION 9 DRAWINGS
This page intentionally left blank.
430-95424-003
9 - 14
Plum A+3 Infusion System
1
27
59
67
57
20
HOSPIRA, INC.
78
58
Technical Service Manual
56
Figure 9-4.
Rear Enclosure Assembly
71
DRAWING NO.
NOT APPLICABLE
9 - 15
Rev. N/A
Sheet 2 of 2
430-95424-003
SECTION 9 DRAWINGS
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430-95424-003
9 - 16
Plum A+3 Infusion System
14
15
12
68
60
34
80
86
61
67
HOSPIRA, INC.
Figure 9-5.
Peripheral Interface Assembly
DRAWING NO.
NOT APPLICABLE
Technical Service Manual
9 - 17
Rev. N/A
Sheet 1 of 1
430-95424-003
SECTION 9 DRAWINGS
This page intentionally left blank.
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9 - 18
Plum A+3 Infusion System
69
41
40
47
46
32
31
12
38
39
7
18
66
HOSPIRA, INC.
Figure 9-6.
Main Chassis Assembly
13
Technical Service Manual
DRAWING NO.
NOT APPLICABLE
9 - 19
Rev. N/A
Sheet 1 of 2
430-95424-003
SECTION 9 DRAWINGS
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430-95424-003
9 - 20
Plum A+3 Infusion System
73
19
6
8
46
16
65
5
HOSPIRA, INC.
70
Figure 9-6.
Main Chassis Assembly
DRAWING NO.
NOT APPLICABLE
17
Technical Service Manual
9 - 21
Rev. N/A
Sheet 2 of 2
430-95424-003
SECTION 9 DRAWINGS
This page intentionally left blank.
430-95424-003
9 - 22
Plum A+3 Infusion System
18
70
17
16
40
HOSPIRA, INC.
Figure 9-7.
CPU PWA, Display, and Keypad
DRAWING NO.
NOT APPLICABLE
Technical Service Manual
9 - 23
Rev. N/A
Sheet 1 of 1
430-95424-003
SECTION 9 DRAWINGS
This page intentionally left blank.
430-95424-003
9 - 24
Plum A+3 Infusion System
4
18
77
66
HOSPIRA, INC.
Figure 9-8.
CPU PWA and Main Chassis
DRAWING NO.
NOT APPLICABLE
Technical Service Manual
9 - 25
Rev. N/A
Sheet 1 of 1
430-95424-003
SECTION 9 DRAWINGS
This page intentionally left blank.
430-95424-003
9 - 26
Plum A+3 Infusion System
37
25
23
42
67
24
45
64
44
43
73
HOSPIRA, INC.
Figure 9-9.
AC Power Cord, Retainer, Batteries,
and Minipole
DRAWING NO.
NOT APPLICABLE
Technical Service Manual
9 - 27
Rev. N/A
Sheet 1 of 1
430-95424-003
SECTION 9 DRAWINGS
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430-95424-003
9 - 28
Plum A+3 Infusion System
9
11
8
10
64
55
HOSPIRA, INC.
Figure 9-10.
Mechanism Assembly
69
DRAWING NO.
NOT APPLICABLE
Technical Service Manual
9 - 29
Rev. N/A
Sheet 1 of 1
430-95424-003
SECTION 9 DRAWINGS
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430-95424-003
9 - 30
Plum A+3 Infusion System
APPENDIX
USE OF THE INFUSION SYSTEM
IN ELECTROMAGNETIC ENVIRONMENTS
EN-2 The Plum A+3 Infusion System is intended for use in the electromagnetic
environment specified in Table A-1, Table A-2, Table A-3, and Table A-4. The user of the
infusion system should assure that it is used only in the appropriate environment.
ELECTROMAGNETIC EMISSIONS
Table A-1 details electromagnetic emissions compliance and guidance.
Table A-1.
Guidance and Manufacturer’s Declaration - Electromagnetic Emissions
Emissions Test
RF Emissions
Compliance
Class B
CISPR11
Harmonic Emissions
Class B
Electromagnetic Enforcement - Guidance
The infuser is suitable for use in all establishments,
including domestic establishments and those directly
connected to the public low voltage power supply network
that supplies buildings used for domestic purposes
IEC 61000-3-2
Voltage Fluctuations/
Flicker Emissions
Complies
IEC 61000-3-3
Technical Service Manual
A-1
Plum A+3 Infusion System
APPENDIX
ELECTROMAGNETIC IMMUNITY
Table A-2 details guidance for the electromagnetic environment.
Table A-2.
Guidance and Manufacturer’s Declaration - Electromagnetic Immunity
Immunity
Test
Electrostatic
Discharge (ESD)
IEC 60601
Test Level
Compliance
Level
±6 kV Contact
±8 kV Contact
±8 kV Air
±15 kV Air
IEC 61000-4-2
Electromagnetic
Environment
Guidance
Floors should be
wood, concrete,
or ceramic tile
If floors are covered
with synthetic
material, relative
humidity should
be at least 30%
Electrical Fast
Transient/Burst
±2 kV for power supply lines
±2 kV for power supply lines
±1 kV for input/output lines
±1 kV for input/output lines
Surge
±1 kV differential mode
±1 kV differential mode
IEC 61000-4-5
±2 kV common mode
±2 kV common mode
Voltage Dips,
Short Interruptions,
and Voltage
Variations on
Power Supply
Input Lines
<5% Ur (>95% dip in Ur)
for 0.5 cycle
<5% Ur (>95% dip in Ur)
for 0.5 cycle
40% Ur (60% dip in Ur)
for 5 cycles
40% Ur (60% dip in Ur)
for 5 cycles
70% Ur (30% dip in Ur)
for 25 cycles
70% Ur (30% dip in Ur)
for 25 cycles
5% Ur (>95% dip in Ur)
for 5 seconds
5% Ur (>95% dip in Ur)
for 5 seconds
3 A/m
400 A/m
IEC 61000-4-4
IEC 61000-4-11
Power Frequency
(50/60 Hz)
Magnetic Field
IEC 61000-4-8
Mains power quality
should be that of a
typical commercial
or hospital
environment
Mains power quality
should be that of a
typical commercial
or hospital
environment
If the user of the
infusion system
requires continued
operation during
power mains
interruptions,
it is recommended
that the infuser be
powered from an
uninterruptible AC
mains power supply
or the battery
Power frequency
magnetic fields
should be at levels
characteristic of
a typical location
in a typical
commercial
or hospital
environment
Ur is the AC Mains voltage prior to application of the test level.
Compliance levels are tested to IEC 60601-2-24 requirements, which are more stringent
than IEC 61000-4-2 and IEC 61000-4-8.
Plum A+3 Infusion System
A-2
Technical Service Manual
APPENDIX
ELECTROMAGNETIC IMMUNITY
FOR LIFE-SUPPORTING EQUIPMENT AND SYSTEMS
Table A-3 provides guidance for use of the infusion system near communications
equipment.
Table A-3.
Guidance and Manufacturer’s Declaration Electromagnetic Immunity for Life-Supporting Equipment and Systems
Immunity
Test
IEC 60601 Test
Level
Compliance
Level
Electromagnetic
Immunity Guidance
Portable and mobile RF communications
equipment should be used no closer to any
part of the infusion system, including cables,
than the recommended separation distance
calculated from the equation applicable to
the frequency of the transmitter
Conducted RF
3 Vrms
IEC 61000-4-6
150 kHz to 80 MHz
outside ISM bandsa
10 Vrms
[V1] V
Recommended separation distance
10 V/m
IEC 61000-4-3
80 MHZ to 2.5 GHz
P
12
d = -----V2
P
[V2] V
150 kHz to 80 MHz
in ISM bandsa
Radiated RF
3, 5
d = --------V1
[E1] V/m
Recommended separation distance:
12
d = -----E1
P
80 MHz to 800 MHz
23
d = -----E1
P
800 MHz to 2.5 GHz
Where P is the maximum output power rating
of the transmitter in watts (W) according to
the transmitter manufacturer and d is the
recommended separation distance in
meters (m)b
Field strengths from fixed RF transmitters,
as determined by an electromagnetic site
survey,c should be less than the compliance
level in each frequency ranged
Interference may occur in the vicinity
of equipment marked with the following
symbol

Note: These guidelines may not apply in all situations. Electromagnetic
propagation is affected by absorption and reflection from structures,
objects and people.
At 80 MHz and 800 MHz, the higher frequency range applies.
Technical Service Manual
A-3
Plum A+3 Infusion System
APPENDIX
a
The industrial, scientific and medical (ISM) bands between 150 kHz and 80 MHz
are 6.765 MHz to 6.795 MHz; 13.553 MHz to 13.567 MHz; 26.957 MHz to 27.283 MHz;
and 40.660 MHz to 40.700 MHz.
b
The compliance levels in the ISM frequency bands between 150 kHz and 80 MHz
and in the frequency range 80 MHz to 2.5 GHz are intended to decrease the likelihood that
mobile/portable communications equipment could cause interference if it is inadvertently
brought into patient areas. For this reason, an additional factor of 10/3 is used
in calculating the recommended separation distance for transmitters in these frequency
ranges.
c
Field strengths from fixed transmitters, such as base stations for radio (cellular and/or
cordless) telephones and land mobile radios, amateur radio, AM and FM radio broadcast
and TV broadcast cannot be predicted theoretically with accuracy. To assess the
electromagnetic environment due to fixed RF transmitters, an electromagnetic site survey
should be considered. If the measured field strength in the location in which the infuser
is used exceeds the applicable RF compliance level above, the infuser should be observed
to verify normal operation. If abnormal performance is observed, additional measures may
be necessary, such as re-orienting or relocating the infuser.
d
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than [V1] V/m.
Plum A+3 Infusion System
A-4
Technical Service Manual
APPENDIX
RECOMMENDED SEPARATION DISTANCES
FOR COMMUNICATIONS EQUIPMENT
The infusion system is intended for use in an electromagnetic environment in which
radiated RF disturbances are controlled. The recommendations provided in Table A-4 help
the user of the infusion system to prevent electromagnetic interference by maintaining
a minimum distance between portable and mobile RF communications equipment
(transmitters) and the infuser, according to the maximum output power
of the communications equipment.
Table A-4.
Recommended Separation Distances Between Portable and Mobile
RF Communications Equipment and the Infusion System
Rated
Maximum
Output Power
of
Transmitter
(Watts)
Separation Distance According to Frequency of Transmitter (Meters)
150 kHz to 80 MHZ
outside ISM bands
3, 5
d = --------V1
150 kHz to 80 MHz
in ISM bands
12
d = -----V2
P
80 Mhz to 800 MHz
12
d = -----E1
P
800 MHz to 2.5 GHz
23
d = -----E1
P
0.01
0.035
0.12
0.12
0.23
0.1
0.11
0.38
0.38
0.73
1
0.35
1.2
1.2
2.3
10
1.1
3.8
3.8
7.3
100
3.5
12
12
23
P
For transmitters rated at a maximum output power not listed above, the recommended separation distance
d in meters (m) can be determined using the equation applicable to the frequency of the transmitter, where P
is the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer.

Note: These guidelines may not apply in all situations. Electromagnetic
propagation is affected by absorption and reflection from structure,
objects and people.
At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
The ISM bands between 150 kHz and 80 MHz are 6.765 MHz to 6.695 MHz; 13.553 MHz
to 13.567 MHz; 26.957 MHz to 27.283 MHz; and 40.660 MHz to 40.700 MHz.
An additional factor of 10/3 is used in calculating the recommended separation distance
for transmitters in the ISM frequency bands between 150 kHz and 80 MHz and in the
frequency range 80 MHz to 2.5 GHz to decrease the likelihood that mobile/portable
communications equipment could cause interference if it is inadvertently brought into
patient areas.
V1=10 Vrms, V2=10 Vrms, and E1=10 V/meter
Technical Service Manual
A-5
Plum A+3 Infusion System
APPENDIX
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Plum A+3 Infusion System
A-6
Technical Service Manual
INDEX
A
C
A/B valve subsystem, 4-30
AC connector replacement, 7-21
AC power cord
Replacement, 7-6
Retainer, 7-6
Velcro strap, 7-6
Acronyms and abbreviations, 1-3
Air sensors, 4-19
Receiver circuitry, 4-20
Transmitter circuitry, 4-19
Alarm loudness test, 5-8
Alarm messages and error codes, 6-2
Error codes requiring
technical service, 6-7
Operational alarm messages, 6-2
Alarms log, 1-12
Analog-to-digital converter, 4-6
APP PWA, 4-26
Artifacts, 1-5
Audible indicators, 4-9
Auxiliary supplies, 4-14
Cassette, 4-28
Alarm test, 5-6
Cassette door replacement, 7-35
Cassette type/presence selection, 4-22
Cleaning and sanitizing, 5-1
Cleaning solutions, 5-2
Component designators, 1-2
Contact Hospira, 6-1
Control logic, 4-4
Conventions, 1-2
CPU, 4-3
CPU PWA, 4-25
Replacement, 7-32
CPU subsystem, 4-3
Analog-to-digital converter, 4-6
Audible indicators, 4-9
Barcode reader interface, 4-9
Control logic, 4-4
CPU, 4-3
DataPort interface, 4-10
Digital-to-analog converter, 4-8
Front panel
Keypad matrix, 4-8
LED indicators, 4-8
On/off key, 4-8
LCD
Backlight control, 4-5
Contrast control, 4-5
Controller, 4-4
Keypad lockout interface, 4-8
Mechanism interface, 4-11
Nurse call interface, 4-9
Power supply interface, 4-10
Programmable read-only memory, 4-4
Real-time clock, 4-5
Static random access memory, 4-4
System memory address map, 4-3
Voltage monitor watchdog timer, 4-6
CPU/driver cable replacement, 7-29
B
Barcode reader
Interface, 4-9
Wand, 4-27
Battery
Charger, 4-16
Door, 7-3
Door pad, 7-3
Operation overview, 5-16
Replacement, 7-3
Voltage measurement, 4-15
Wire harness, 7-3
Battery charge/discharge current
measurement, 4-15
Biomed settings, 1-8
Alarms log, 1-12
IV parameters, 1-10
Setting the time and date, 1-13
Technical Service Manual
I-1
430-95424-003
INDEX
D
I
DataPort interface, 4-10
Delivery accuracy test, 5-13
Digital-to-analog converter, 4-8
Display assembly replacement, 7-28
Display test, 5-6
Distal air-in-line test, 5-11
Distal occlusion test, 5-11
Drawings, 9-1
Driver PWA, 4-25
Illustrated parts breakdown, 9-1
Inlet/outlet valve subsystem, 4-31
Inspection, 1-6, 5-3
Instrument installation procedure, 1-5
Inspection, 1-6
Self test, 1-6
Unpacking, 1-6
Internal AC power cord replacement, 7-21
Introduction, 1-1
Acronyms and abbreviations, 1-3
Artifacts, 1-5
Biomed settings, 1-8
Component designators, 1-2
Conventions, 1-2
Instrument installation procedure, 1-5
Scope, 1-1
User qualification, 1-5
IV parameters, 1-10
E
Electrical safety test, 5-14
Electrical safety measurements, 5-14
Electronic subsystem overview, 4-2
CPU subsystem, 4-3
Mechanism subsystem, 4-16
Power supply subsystem, 4-13
EMI gasket replacement, 7-16
End of the PVT, 5-15
Equipment required, 5-3
Error codes requiring
technical service, 6-7
K
Keypad
Gasket, 7-17
Lockout interface, 4-8
Replacement, 7-27
Keypad verification/functional test, 5-7
F
Fluid shield replacement, 7-35
Free flow test, 5-6
Front panel
Keypad matrix, 4-8
LED indicators, 4-8
On/off key, 4-8
Front/rear enclosure gasket
replacement, 7-15
Fuse replacement, 7-22
L
LCD, 4-27
Backlight control, 4-5
Contrast control, 4-5
Controller, 4-4
Lockout switch test, 5-9
Lower front enclosure gasket
replacement, 7-15
G
M
Gaskets
EMI, 7-16
Front/rear enclosure, 7-15
Keypad, 7-17
Lower front enclosure, 7-15
Rear enclosure, 7-23
Top seal, 7-17
General description, 4-1
430-95424-003
Main chassis assembly component
replacement, 7-24
Main regulator fault detection, 4-14
Main switching regulator, 4-13
Current limit loop, 4-14
Main loop, 4-13
Secondary loop, 4-13
I-2
Plum A+3 Infusion System
INDEX
P
Maintenance and service tests, 5-1
Battery operation overview, 5-16
Performance verification test, 5-2
Periodic maintenance inspection, 5-15
Routine maintenance, 5-1
Mechanical overview, 4-27
Cassette, 4-28
Mechanism assembly, 4-30
Mechanism assembly, 4-30
A/B valve subsystem, 4-30
Inlet/outlet valve subsystem, 4-31
Motor and valve assemblies, 4-30
Plunger drive subsystem, 4-31
Replacement, 7-34
Mechanism interface, 4-11
Mechanism subsystem, 4-16
Air sensors, 4-19
Cassette type/presence selection, 4-22
Motor position sensors, 4-18
Motors/motor drive, 4-16
Pressure sensor calibration, 4-22
Pressure sensors, 4-20
Serial EEPROM, 4-22
V2_5 reference voltage, 4-18
Minipole assembly replacement, 7-23
Motor and valve assemblies, 4-30
Motor position sensors, 4-18
Motor power cable replacement, 7-32
Motors/motor drive, 4-16
Chopper motor drive, 4-17
Stepper motors, 4-17
Performance verification test, 5-2
Alarm loudness test, 5-8
Cassette alarm test, 5-6
Delivery accuracy test, 5-13
Display test, 5-6
Distal air-in-line test, 5-11
Distal occlusion test, 5-11
Electrical safety test, 5-14
End of the PVT, 5-15
Equipment required, 5-3
Free flow test, 5-6
Inspection, 5-3
Keypad verification/functional
test, 5-7
Lockout switch test, 5-9
Nurse call test, 5-14
Proximal air-in-line test, 5-10
Proximal occlusion test, 5-9
Self test, 5-4
Test setup, 5-4
Periodic maintenance inspection, 5-15
Peripheral component replacement, 7-11
Peripheral cover, 7-12
Volume control knob, 7-12
Peripheral cover replacement, 7-12
Peripheral interface assembly
replacement, 7-9
Peripheral interface PWA, 4-24
Peripheral PWA, 4-24
Replacement, 7-10
Piezo alarm assembly replacement, 7-33
Plunger drive subsystem, 4-31
Pole clamp assembly replacement, 7-20
Backing plate, 7-20
Power control, 4-14
Power supply interface, 4-10
Power supply PWA, 4-23
Replacement, 7-27
Power supply subsystem, 4-13
Auxiliary supplies, 4-14
Battery charge/discharge current
measurement, 4-15
Battery charger, 4-16
Battery voltage measurement, 4-15
Main regulator fault detection, 4-14
Main switching regulator, 4-13
Power control, 4-14
System power, 4-14
N
Nurse call
Interface, 4-9
Test, 5-14
O
Opener handle assembly
replacement, 7-38
Operational alarm messages, 6-2
Technical Service Manual
I-3
430-95424-003
INDEX
Peripheral components, 7-11
Peripheral cover, 7-12
Peripheral interface assembly, 7-9
Peripheral PWA, 7-10
Piezo alarm assembly, 7-33
Pole clamp assembly and backing
plate, 7-20
Power supply PWA, 7-27
Rear enclosure assembly
components, 7-18
Rear enclosure gasket, 7-23
Required tools and materials, 7-2
Rubber foot pad, 7-2
Safety and equipment precautions, 7-1
Separating the front enclosure,
rear enclosure, and main chassis
assembly, 7-7
Top seal gasket, 7-17
Volume control knob, 7-12
Required tools and materials, 7-2
Routine maintenance, 5-1
Cleaning and sanitizing, 5-1
Rubber foot pad replacement, 7-2
Pressure sensor calibration, 4-22
Pressure sensors, 4-20
Amplifier and low pass filter, 4-21
Bridge excitation supply, 4-21
Printed wiring assemblies, 4-23
APP, 4-26
CPU, 4-25
Driver, 4-25
Peripheral, 4-24
Peripheral interface, 4-24
Power supply, 4-23
Switch, 4-26
Programmable read-only memory, 4-4
Proximal air-in-line test, 5-10
Proximal occlusion test, 5-9
R
Real-time clock, 4-5
Rear enclosure assembly component
replacement, 7-18
Rear enclosure gasket replacement, 7-23
Remote mounted peripherals, 4-27
Barcode reader wand, 4-27
LCD, 4-27
Sealed lead acid battery, 4-27
Replaceable parts and repairs, 7-1
Replacement procedures, 7-1
AC connector, 7-21
AC power cord, retainer,
and Velcro strap, 7-6
Battery, wire harness, door,
and door pad, 7-3
Cassette door, 7-35
CPU PWA, 7-32
CPU/driver cable, 7-29
Display assembly, 7-28
EMI gasket, 7-16
Fluid shield, 7-35
Front/rear enclosure gasket, 7-15
Fuse, 7-22
Internal AC power cord, 7-21
Keypad, 7-27
Keypad gasket, 7-17
Lower front enclosure gasket, 7-15
Main chassis assembly
components, 7-24
Mechanism assembly, 7-34
Minipole assembly, 7-23
Motor power cable, 7-32
Opener handle assembly, 7-38
430-95424-003
S
Safety and equipment precautions, 7-1
Scope, 1-1
Sealed lead acid battery, 4-27
Self test, 1-6, 5-4
Separating the front enclosure,
rear enclosure, and main chassis
assembly, 7-7
Serial EEPROM, 4-22
Setting the time and date, 1-13
Specifications, 8-1
Static random access memory, 4-4
Switch PWA, 4-26
System memory address map, 4-3
System operating manual, 3-1
System power, 4-14
T
Technical assistance, 6-1
Test setup, 5-4
Theory of operation, 4-1
Electronic subsystem overview, 4-2
General description, 4-1
Mechanical overview, 4-27
Printed wiring assemblies, 4-23
Remote mounted peripherals, 4-27
I-4
Plum A+3 Infusion System
INDEX
Top seal gasket replacement, 7-17
Troubleshooting, 6-1
Alarm messages and error codes, 6-2
Procedures, 6-11
Technical assistance, 6-1
Warning messages, 6-1
U
Unpacking, 1-6
User qualification, 1-5
V
V2_5 reference voltage, 4-18
Velcro strap replacement, 7-6
Voltage monitor watchdog timer, 4-6
Volume control knob replacement, 7-12
W
Warning messages, 6-1
Warranty, 2-1
Technical Service Manual
I-5
430-95424-003
INDEX
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430-95424-003
I-6
Plum A+3 Infusion System
For technical assistance, product return authorization, and to order parts, accessories,
or manuals within the United States, contact Hospira.
1-800-241-4002
For additional services and technical training courses, visit the website
at www.hospira.com.
For technical assistance and services outside the United States, contact the local Hospira
sales office.
CAUTION: Federal (USA) law restricts this infuser to sale by or on the order
of a physician or other licensed practitioner.
WARNING:
EXPLOSION HAZARD EXISTS IF THE INFUSION SYSTEM IS USED
IN THE PRESENCE OF FLAMMABLE SUBSTANCES.
Plum A+3 is a trademark of Hospira, Inc.
Attention, consult accompanying documents.
Provides adequate degree of protection against electrical shock
and suitable for application to patient
Type CF
IPX1
Class 1
UL 60601-1
®
CSA 601.1
MCN 160992
C
US
IEC 60601-1
IEC 60601-2-24
Protected against dripping water
Mains supply equipment using protective earth
The ‘C’ and ‘US’ indicators adjacent to the CSA Mark signify
that the product has been evaluated to the applicable CSA
and ANSI/UL Standards, for use in Canada and the U.S.,
respectively. This ‘US’ indicator includes products eligible
to bear the ‘NRTL’ indicator. NRTL (National Recognized Testing
Laboratory), is a designation granted by the U.S. Occupational
Safety and Health Administration (OSHA) to laboratories which
have been recognized to perform certification to U.S. Standards.
©Hospira, Inc.
Printed in USA
Technical Service Manual
430-95424-003-END
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