CareFusion M675 Service Manual

Service Manual

Infant Flow

®

SiPAP

Model M675

© Copyright 2004, VIASYS Healthcare Critical Care

675-120 Revision C November 2004

2 ®


Service Manual

Revision History

September 2003

November 2004

December 2004

675-120(1)

B

C

All

All

Title page, 19,

30, 39, 45, 50,

56, 57, 61, 62,

64, 65, 68, 69,

73, 75, 81–83,

86, 87, 88

Release

Release manual in VIASYS Healthcare template using VIASYS Healthcare Critical

Care nomenclature.

Revised per EO 27980.

Removed the picture from the title page.

Deleted the ESD warning from page 19.

Removed “O2 Sensor” and added the word

“measured” on page 30.

Changed “O2 sensor” to “fuel cell” on pages 39, 45, 62, 68, 69, 73, 86, and 87.

Replaced the O2 senor row on page 50.

Updated the error codes on pages 56 and

57.

Replaced the warning on page 61.

Changed the Fitting procedure on pages

64, 68, and 75.

Changed step 6 on page 65.

Added Addendum A – Oxygen Leak Test

Changed Transducer Assy. to Transducer

Interface on page 88.

3


4 ®

Contact and Ordering Information

United States, Latin America, Asia Pacific:

Sales, Service and Clinical Support:

VIASYS Healthcare

Critical Care Division

22705 Savi Ranch Parkway

Yorba Linda, CA 92887

Phone: (714) 283-8444

Fax: (714) 283-8493 www.VIASYShc.com

United Kingdom:

Sales, Service and Clinical Support:

VIASYS Healthcare

3 Welton Rd.

Warwick,

CV34 5PZ

Phone: 01926 490888

Fax: 01926 402262

Europe

Sales and Customer Service

VIASYS Healthcare

Critical Care Division


Yorba Linda, CA 92887

Phone: (714) 283-8444

(800) 381-3552

Technical Service

VIASYS Healthcare

Leibnizstrasse 7

D-97204 Hoechburg

Germany

Phone +49 (0) 931 4972 – 0

Fax:+49 (0) 931 4972 –423


Service Manual

Warranty

5

The Infant Flow

®

SiPAP is warranted to be free from defects in material and workmanship and to meet the published specifications for One (1) year from date of shipment.

The liability of VIASYS Healthcare, Critical Care Division, (referred to as the

Company) under this warranty is limited to replacing, repairing or issuing credit, at the discretion of the Company, for parts that become defective or fail to meet published specifications during the warranty period; the Company will not be liable under this warranty unless (A) the Company is promptly notified in writing by Buyer upon discovery of defects or failure to meet published specifications; (B) the defective unit or part is returned to the Company, transportation charges prepaid by

Buyer; (C) the defective unit or part is received by the Company for adjustment no later than four weeks following the last day of the warranty period; and (D) the

Company’s examination of such unit or part shall disclose, to its satisfaction, that such defects or failures have not been caused by misuse, neglect, improper installation, unauthorized repair, alteration or accident.

Any authorization of the Company for repair or alteration by the Buyer must be in writing to prevent voiding the warranty. In no event shall the Company be liable to the Buyer for loss of profits, loss of use, consequential damage or damages of any kind based upon a claim for breach of warranty, other than the purchase price of any defective product covered hereunder.

The Company warranties as herein and above set forth shall not be enlarged, diminished or affected by, and no obligation or liability shall arise or grow out of the rendering of technical advice or service by the Company or its agents in connection with the Buyer's order of the products furnished hereunder.

Limitation of Liabilities

This warranty does not cover normal maintenance such as cleaning, adjustment or lubrication and updating of equipment parts. This warranty shall be void and shall not apply if the equipment is used with accessories or parts not manufactured by the

Company or authorized for use in writing by the Company or if the equipment is not maintained in accordance with the prescribed schedule of maintenance.

The warranty stated above shall extend for a period of One (1) year from date of shipment, with the following exceptions:

1. Components for monitoring of physical variables such as temperature, pressure, or flow are warranted for ninety (90) days from date of receipt.

2. Elastomeric components and other parts or components subject to deterioration, over which the Company has no control, are warranted for sixty

(60) days from date of receipt.

3. Internal batteries are warranted for ninety (90) days from the date of receipt.

The foregoing is in lieu of any warranty, expressed or implied, including, without limitation, any warranty of merchantability, except as to title, and can be amended only in writing by a duly authorized representative of the Company.


6 ®

Contents

Revision History.................................................................................... 3

Contact and Ordering Information ...................................................... 4

Warranty ................................................................................................ 5

Limitation of Liabilities ................................................................................................... 5

Contents ................................................................................................ 6

Notices ................................................................................................... 8

Copyright Notice ............................................................................................................ 8

Trademark Notices ........................................................................................................ 8

EMC Notice ................................................................................................................... 8

MRI Notice..................................................................................................................... 9

Intended Use Notice ...................................................................................................... 9

Regulatory Notice .......................................................................................................... 9

Classification ................................................................................................................. 9

Declaration of Conformity Notice ................................................................................. 10

Chapter 1 - Product Description ........................................................ 12

Infant Flow

®

SiPAP Features .............................................................. 12

Chapter 2 - Product Specifications ................................................... 14

Modes.......................................................................................................................... 14

Controls ....................................................................................................................... 14

Monitors....................................................................................................................... 14

Alarms ......................................................................................................................... 15

Pneumatic Supply........................................................................................................ 15

Electrical Supply .......................................................................................................... 15

Atmospheric & Environmental ..................................................................................... 16

Physical ....................................................................................................................... 16

Chapter 3: Summary of Warnings and Cautions ............................. 18

Terms ................................................................................................... 18

Warnings ..................................................................................................................... 18

Cautions ...................................................................................................................... 20

Chapter 4: System Construction ....................................................... 22

Touch Screen .............................................................................................................. 26

Alarm Conditions ......................................................................................................... 27

Diagnostic Screen ....................................................................................................... 28

Chapter 5 - Operation ......................................................................... 30

Gas Flow ..................................................................................................................... 30

Electronic Functions .................................................................................................... 32

Electrical Layout .......................................................................................................... 33

Fault Management....................................................................................................... 34

Chapter 6 - Operation ......................................................................... 36


Service Manual

7

Preparing and Connecting the Equipment................................................................... 36

Setting Up the Equipment............................................................................................ 40

Setting the NCPAP Parameters................................................................................... 41

Setting the BiPhasic Parameters ................................................................................. 42

Setting the Triggered BiPhasic Parameters................................................................. 43

Calibration.................................................................................................................... 44

Giving a Manual Timed Sigh........................................................................................ 45

Operation Without Electrical Power ............................................................................. 45

Fault Indications........................................................................................................... 45

Diagnostics .................................................................................................................. 52

Chapter 7- Maintenance ...................................................................... 60

Cleaning ............................................................................................... 60

Maintenance......................................................................................... 60

General ........................................................................................................................ 60

Maintenance Frequencies ........................................................................................... 61

Removal and Fitting of Case ....................................................................................... 62

Removal and Fitting of Battery .................................................................................... 62

Removal and Fitting of Oxygen Filter .......................................................................... 65

Removal and Fitting of Fuel Cell Filter/Restrictor ........................................................ 66

Removal and Fitting of the Fuel Cell............................................................................ 67

Removal and Fitting of Blender and Components ....................................................... 68

Removal and Fitting of Water Trap Filter ..................................................................... 71

Removal and Fitting of Case Bleed Filtered Restrictor................................................ 72

Removal and Fitting of PA Solenoid Valve .................................................................. 73

Firmware Reload/Upgrade........................................................................................... 73

Testing ......................................................................................................................... 74

Chapter 8 – Explanation of Symbols ................................................. 75

Symbols used on buttons................................................................... 77

Appendix A- Oxygen Leak Test.......................................................... 79

Appendix B- Product Configurations ................................................ 82

Non-US Configuration Parameters

..................................................... 82

US Configuration Parameters

................................................................ 82

Appendix C - Spare Parts ................................................................. 83

Additional Service Parts ..................................................................... 84

Glossary ............................................................................................... 87


8 ®

Notices

Copyright Notice

Copyright © 2004 VIASYS Healthcare, Critical Care Division, California.

This work is protected under Title 17 of the U.S. Code and is the sole property of the

Company. No part of this document may be copied or otherwise reproduced, or stored in any electronic information retrieval system, except as specifically permitted under U.S. Copyright law, without the prior written consent of the Company. For more information, contact:

World Headquarters

1100 Bird Center Drive

Palm Springs, CA 92262-8099

U.S.A.

Phone: (760) 778-7200

(800) 328-4139

Fax: (760) 778-7274 www.VIASYSCriticalCare.com

European Office

Rembrandtlaan 1b

3723 BG Bilthoven

P.O. Box 299, 3720 AG Bilthoven

The Netherlands

Phone: +31 (30) 2289 711

Fax: +31 (30) 2286 244

Trademark Notices

Infant Flow

® and SiPAP are trademarks of VIASYS Healthcare, Critical Care Division in the U.S. and some other countries. All other brand names and product names mentioned in this manual are trademarks, registered trademarks, or trade names of their respective holders.

EMC Notice

This equipment radiates and is susceptible to radio frequency energy. If not installed and used in accordance with the instructions in this manual, electromagnetic interference may result. The equipment has been tested and found to comply with the limits set forth in BS EN60601-1-2 for Medical Electrical Equipment Part 1-2:

General requirements for safety-collateral standard. Electromagnetic compatibility – requirements and tests. These limits provide reasonable protection against electromagnetic interference when operated in the intended use environments (e.g. hospitals) described in this manual.

This device is also designed and manufactured to comply with the following standards;

Safety: UL 60601-1: 2003 Medical Electrical Equipment, Part 1: General

Requirements for Safety.

CAN/CSA C22.2 No 601.1-M90, Medical Electrical Equipment - Part

1: General Requirements for Safety including C22.2 No. 601.1S1-94

(IEC601-1, Amendment 1:1991) Supplement No. 1-94 to CAN/CSA

22.2 No. 601.1-M90


Service Manual

With regards to Electrical Safety:

Contains type BF patient applied parts

9

MRI Notice

This equipment contains electromagnetic components whose operation can be affected by intense electromagnetic fields.

Do not operate this device in a MRI environment or in the vicinity of high-frequency surgical diathermy equipment, defibrillators, or short-wave therapy equipment.

Electromagnetic interference could disrupt the operation of the device.

Intended Use Notice

The Infant Flow

®

SiPAP, consisting of a Driver and Generator plus NCPAP Prongs and Masks, is a medical device intended for the provision of Bi-Level CPAP to produce a sigh. This system is for use in Hospital, Hospital Type facilities and intra-

Hospital transport environments and is indicated for the treatment of Newborn and

Infant patients.

Operators of this equipment and Service Engineers are required to read and thoroughly understand the contents of this manual before using or maintaining the equipment.

This manual is intended for use by a competent, fully qualified Service

Engineer. It includes a description of the unit and how it works. It also contains operating and diagnostic procedures and maintenance instructions. For usage of associated equipment, refer to the Manufacturer’s literature.

Regulatory Notice

Federal law restricts the sale of this device except by or on order of a physician.

Classification

Type of Equipment: Medical Equipment, Class 1 and internally powered, IPX1

Protected, and uses type BF applied parts. Equipment is not suitable for use in presence of flammable anesthetics.


10 ®

SiPAP

Declaration of Conformity Notice

This medical equipment complies with the Medical Device Directive, 93/42/EEC, and the following Technical Standards, to which Conformity is declared:

Council Directive(s): MDD 93/42/EEC Annex II (excluding section 4)

Safety: EN 60601-1, EN 794-1

Conformity Assessment: MDD Annex II

Quality System: ISO 13485

EU Notified Body: BSI (Reg. No. 0086)

Device Classification: IIb

EU Notified Body:

BSI (Reg. No. 0086)

Trade names:

Infant Flow SiPAP

Manufactured by:

SensorMedics Corporation


Yorba Linda, CA 92887, USA

If you have a question regarding the Declaration of Conformity for this product, please contact VIASYS Healthcare, Critical Care Division.


Service Manual

11


12 ®

SiPAP

Chapter 1 - Product Description

The Infant Flow

®

SiPAP is a non-invasive form of respiratory support designed for use in hospital environments such as Neonatal and Pediatric Intensive Care Units. It can also be used when transporting patients within the hospital environment.

The Infant Flow

®

SiPAP is currently available in a Plus or Comprehensive configuration. The Plus configuration provides NCPAP and time triggered, BiPhasic modes with and without breath rate monitoring. The Comprehensive configuration offers these features plus patient BiPhasic mode with apnea backup breaths. The

Infant Flow

®

SiPAP comes standard in all configurations with an LCD touch screen display, pressure time waveform graphics, integrated patient monitoring, alarms for high and low pressure and FiO

2

and up to 2 hours of backup battery power.

As a result of the unique patented design, the Infant Flow

®

SiPAP has been proven to provide the most stable CPAP at the lowest work of breathing for patients compared to other devices. The outstanding performance of the Infant Flow

®

SiPAP is irrespective of patient demand or expiratory flows. This system has been designed and tested to perform optimally when used only with accessories available from

VIASYS Healthcare, Inc. These accessories include circuits and generators, prong and mask patient interfaces and bonnets.

Infant Flow

®

SiPAP Features

The expanded capabilities of the Infant Flow

®

SiPAP Plus and Comprehensive configurations allow for applications to broader range of patients who may otherwise not be candidates for non-invasive respiratory support.

NCPAP – allows for continuous positive airway pressure based on clinician set pressure. Breath rate monitoring/alarm can be activated in this mode .

BiPhasic - allows for time triggered pressure assists to be delivered based on clinician set inspiratory time, rate, and pressure criteria. Breath rate monitoring/alarm can be activated in this mode.

BiPhasic tr* - allows for patient triggered pressure assists to be delivered based on clinician set inspiratory time and pressure criteria. Breath rate monitoring/alarm, and

Apnea backup breaths are automatically active in the mode.

Patented Infant Flow

®

Generator - The Infant Flow

®

Generator is a fluidic device for the generation of consistent infant nasal CPAP with a low work of breathing compared to other devices.

Fully integrated alarms packages – . Supply gases failure, High Patient Pressure,

Low patient pressure, high and low delivered Oxygen concentration, change from AC to DC power source, low and flat battery charge status and Low breath rate/apnea alarm.

Battery Backup – Up to 2 hours of battery backup allows for intra-hospital transport.

Clear indicators are provided for power supply in use (AC or DC), and battery charge level.


Service Manual

13

Screen Lock - After 120 seconds of no screen inputs, the screen changes to the

Locked Screen to prevent inadvertent changes. Upon activation of a high priority alarm the screen changes to an unlocked state to allow for immediate interventions as required.

Table 1 – Functions and Accessories

Functions & Accessories Plus Comprehensive*

NCPAP

NCPAP with breath rate monitoring and alarm

BiPhasic

BiPhasic with breath rate monitoring and alarm

BiPhasic tr*

Internal Battery

Manual Breath

Apnea Back up rate

Screen lock

Prioritization of alarms

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

*Comprehensive configuration not available for sale in the United States

CAUTION

The Infant Flow SiPAP™ has been designed and tested as a complete system using

Infant Flow™ accessories. Only accessories approved for use should be used. If in doubt, please contact your local VIASYS representative.


14 ®

SiPAP

Chapter 2 - Product Specifications

Modes

•

NCPAP

•

NCPAP with breath rate monitoring and low rate alarm

•

BiPhasic (time triggered)

•

BiPhasic (time triggered) with breath rate monitoring and low rate alarm

•

BiPhasic tr (patient triggered ) with breath rate monitoring, low breath rate alarm, and apnea back up

Controls

•

Inspiratory Time (Ti) – 0.1-3.0 seconds

•

Rate (R) – 1-120 (Comprehensive* only)

•

Rate (R) – 1-54 (Plus only)

•

Apnea Interval (T apnea

) – 10-30 seconds, 5 second intervals (Comp* only)

•

Apnea Interval (T

LBR

) – 10-30 seconds, 5 second intervals (Plus only)

•

NCPAP/Pres Low flow meter – 0-15L/min, accuracy +/- 15% of selected output

•

NCPAP/Pres High flow meter – 0-5L/min, accuracy +/- 15% of selected output

•

Manual Breath – X 1

•

Rate monitoring on/off – NCPAP

•

%O

2

– 21 - 100% - accuracy +/-3%

Monitors

•

CPAP

•

PEEP

•

MAP

•

PIP

•

%O

2

•

I:E

•

Spontaneous rate (Rs)

•

Battery charge level


Service Manual

Alarms

15

•

High airway pressure – 3 cmH20 above measured airway pressure

•

High circuit pressure – maximum 11 cmH20 in time triggered Biphasic mode

•

High circuit pressure – maximum 15 cmH20 in patient triggered Biphasic tr* mode

•

Low airway pressure – 2 cmH20 below measured airway pressure or 1 cmH20 if otherwise would be zero

•

High and Low delivered Oxygen concentration +5% of setting

•

Low breath rate alarm

•

Low or Flat battery charge level

•

Input failure

•

Alarm volume (electronic alarms) 70 dBa at 1 meter

Pneumatic Supply

•

Patient Gas Outlet - 15 mm standard taper fitting

•

Patient Pressure Input - 4.5 mm Luer taper fitting

•

Gas Supply - Nominal 4 bar, clean, dry medical air and oxygen

•

Range - 2.8 - 6 bar; Maximum differential pressure 2 bar

•

Manometer - Range 0 to + 20 cmH2O, accuracy,

±

2% of span

•

Gas Connections - Standard DISS or NIST connectors

Electrical Supply

•

Input Voltage -100-230 VAC

•

Input Frequency -50/60 Hz

•

Power Consumption -50 VA maximum

•

Fuse Rating For 220 V nominal operation -“T” Type 2.5 A at 250 V

•

Device Housing Protection rating level -IPX1

•

Battery Working Time -2 hours (from fully charged state)

•

Battery Charging Time –max. 16 hours


16 ®

SiPAP

Atmospheric & Environmental

•

Temperature Range-Operating : 5 – 40° C

•

Storage : 0 - 50° C

•

Relative Humidity -Operating : 0 – 90% non-condensing

•

Storage : 0 – 90% non-condensing

Physical

•

Dimensions (driver only)(W x H x D) 26 x38 x 23.5 cm /

10.25 x15 x 9.25 in

•

Weight (driver only )-8.8 kg / 19.5 lb


Service Manual

17


18 ®

SiPAP

Chapter 3: Summary of Warnings and

Cautions

Please review the following safety information prior to operating the Infant Flow

®

SiPAP. Attempting to operate this equipment without fully understanding its features and functions may result in unsafe operating conditions.

Warnings and Cautions, which are general to the use of the device under all circumstances, are included in this section. Some Warnings and Cautions are also inserted within the manual where they are most meaningful.

Notes are also located throughout the manual to provide additional information related to specific features.

If you have a question regarding the installation, set up, operation, or maintenance of the device, contact VIASYS Healthcare Customer Care.

Terms

WARNINGS identify conditions or practices that could result in serious adverse reactions or potential safety hazards.

CAUTIONS identify conditions or practices that could result in damage to the ventilator or other equipment.

NOTES identify supplemental information to help you better understand how the ventilator works.

Warnings

•

Whenever a patient is attached to respiratory care equipment, constant attendance is required by qualified personnel. The use of an alarm or monitoring system does not give absolute assurance of warning for every malfunction that may occur in the system. In addition, some problems may require immediate attention.

•

The gas blender incorporated in this product is designed to mix medical grade air and oxygen only. Do not modify the inlets to accommodate other source gases such as anesthetic gases.

•

Check that the water trap is empty before use and empty it frequently during use.

•

Liquid water or other contaminants in either gas supply, particularly the air supply, may cause malfunction of this equipment and equipment connected to it.


Service Manual

19

•

When filling a humidifier, do not move the stand. Moving or transporting the stand while refilling may cause the stand and equipment to over balance.

•

Do not use conductive patient circuits with the Infant Flow SiPAP Driver.

•

Nasal CPAP can cause nasal irritation, septal distortion, skin irritation and pressure necrosis. Observe the usage guidelines to minimize these complications.

•

This device exhausts O

2

during normal operation. Oxygen vigorously accelerates combustion. To avoid fire hazard, do not place flammable materials or sources of heat close to the exhaust.

•

Do not use the equipment without the exhaust tube fitted (refer to Figure 2).

•

To reduce trip hazard, always ensure cable and tubes are restrained away from walking areas.

•

The Abdominal Respiratory Sensor will not detect all forms of apnea.

Independent monitoring should always be used with this device.

•

If the unit is shelf mounted, ensure that the unit is stable and that hoses and cables are restrained to avoid hazard of toppling.

•

This equipment is not suitable for use in the presence of a flammable anesthetic mixture.

•

The NCPAP Pres High flowmeter must be adjusted to zero when not required for the patient.

•

Under extreme conditions (minimum supply pressure and maximum gas demand, including auxiliary output) output flow rates and delivered pressure may be reduced.

•

Only use the supplied AC cable to connect to the power supply.

•

Do not attach the Generator to the patient until the initial set up is complete.

•

The indicates a connection between the transducer interface and the unit. It does not indicate correct positioning of the Abdominal Respiratory

Sensor.

•

Calibration must only be done when the unit is not connected to the patient.

•

Ensure the whistle sounds during gas connection. If not, the device may be faulty and should not be used. Refer to your Service Engineer.

•

Verify that the displayed value for delivered FiO

2

corresponds to the value set on the blender. Refer to Faults and Indications.

•

Oxygen vigorously accelerates combustion. To avoid explosion hazard, do not use any instrument or other equipment that may have been exposed to oil or grease contamination.


20 ®

SiPAP

Cautions

•

Federal Law (USA) restricts this device to sale by or on the order of a physician.

•

The precision gas blender in this product may become non-functional or damaged if used without the protective water trap and filters provided.

•

The power switch on this unit does not isolate the external power supply.

Disconnect the power supply cable to ensure complete isolation.

•

Before use, verify that this equipment has been authorized for use by a qualified person.

•

The Infant Flow SiPAP™ has been designed and tested as a complete system using Infant Flow™ accessories. Only accessories approved for use should be used. If in doubt, please contact your local VIASYS representative.

•

Where the integrity of the external protective earth conductor is in doubt, the equipment shall be powered by its internal power source (battery).

•

Do not immerse any part of the IFSD in water or sterilize it with gas or steam.

•

Ensure patient breathing circuit is replaced at regular intervals.


Service Manual

21


22 ®

SiPAP

Chapter 4: System Construction

CAUTION

Where the integrity of the external protective earth conductor is in doubt the equipment shall be powered by its internal power source (battery).

The IFSD is AC powered with an integral rechargeable DC battery that provides power for up to two hours without any interruption of performance or function. If the

AC power supply fails or is disconnected, the IFSD automatically switches to battery power and gives an audio and visual alarm.

The IFSD is enclosed in a case with Operator controls and input connectors on the front and rear panel. The front panel is shown in Figure 1. The back panel is shown in Figure 2. The case incorporates non slip feet for table top use or must be fitted to a dedicated stand. The major components within the casing are:

•

a gas module

•

an electronics module

•

a front panel module

•

a patient trigger module

•

a module


Service Manual

23

675-120

Figure 1 - IFSD Front Panel

Gas Module

The function of the gas module is to take air and oxygen, blend them into the required mixture and deliver this mixture to the patient at the prescribed flow rate.

The gas module also measures the oxygen concentration, measures the patient pressure, provides an auxiliary gas outlet (optional) and provides switched Biphasic flow.

The main components are an air/oxygen blender, a flow manifold, a vent valve, an exhaust manifold with alarm whistle, NCPAP Pres low and NCPAP Pres high flowmeters, and a valve/sensor PCB. The inlet gas connections are on an interchangeable inlet block to allow for different gas fittings. The exhaust manifold discharges gas to the outside of the case and is positioned away from the electrical connectors and switch to reduce any potential explosive hazard.

Revision C November 2004

24 ®

SiPAP

Electronics Module

The function of the electronics module is to power the unit either by AC mains supply or DC emergency battery supply, to control the gas module and read the gas module sensors. The main components are a power supply unit, a rechargeable battery, a main processor PCB, LED PCB, Valve/Sensor PCB and a LCD screen (touch screen). The LCD screen includes a back-light which is always on when the IFSD is powered. The touch screen displays information and receives inputs from the Operator via the touch screen keyboard.

Ground test point

Figure 2 - IFSD Back Panel


Service Manual

25

675-120

Figure 3 -IFSD Internal Components


26 ®

SiPAP

Front Panel Module

The function of the front panel module is to house the gas and electrical connections to the patient, Operator controls and indicators. The module consists of a front panel plate, the touch screen with key pad, flowmeters and FiO

2

control, patient connectors and indicators and an ambient light sensor. The backlight on the touch screen is decreased if the ambient light sensor detects a low ambient light level and increased if it detects a high ambient light level.

The green Power light is always on when AC power is connected to the unit.

The Alarm Warning Bar flashes red to indicate an alarm.

Patient Trigger Module (Plus and Comprehensive Models)

The patient trigger module consists of a PCB which plugs into the main processor

PCB. Its function is to detect patient breaths and apnea and give this information to the main processor in the electronics module. The main processor uses the signals from the patient trigger module to instruct the biphasic pressure control to provide a timed sigh to the patient.

Firmware Module

The firmware module is the unit’s embedded software. Its function is to instruct the microprocessor how to control the unit and to interact with the Operator.

Touch Screen

The touch screen provides the Operator with a series of screens with icons to enable settings, calibration and fault diagnosis. The Start Up Screen is shown in Figure 4.

The display includes a status bar which incorporates a battery status, mode indicator, alarm button and patient trigger indicator. The center part of the display shows icons which relate to the function being selected or performed. The display also includes a key pad with six keys. The icon in each key changes depending on the function being performed.

Battery Status and Charging Indicator

If the battery status shows three bars or less, the display flashes alternately between red bars on a white background and a pink background.

Alarm Button

The alarm button alerts the Operator to fault conditions. An audible alarm is activated at the same time. In the unalarmed condition the button is green . In the high-priority alarm condition, the button flashes red and an audible alarm is heard. If the alarm button is pressed (to silence the audible alarm), the button changes to the button flashes and flashes red. In a medium-priority alarm condition,

yellow and an audible alarm is heard. In a low-priority


Service Manual

27 alarm condition, the button is solid yellow with an audible alarm. If any alarm condition resets itself, the yellow alarm bar remains to alert the clinician of a previous problem.

Caution/Information

The Caution/Information icon alerts the Operator to read this manual. It flashes during an alarm condition.

Mode Indicator

The Mode Indicator shows four question marks when in Start up or Adjust and changes to show the applicable mode in use (e.g. NCPAP).

Figure 4 - Touch Screen Display – Start Up

Patient Trigger Indicator (Plus and Comprehensive Models)

The Patient Trigger indicator changes to when the transducer interface is connected and ready to be connected to the patient and indicates a transducer interface is not connected. when the

Alarm Conditions

Audible and visible alarm indications are given to alert the Operator to specified conditions that affect the operation of the unit. The electronic alarm limits are automatically set after two minutes without Operator inputs but the Operator can manually set the alarm parameters for certain conditions if required. The IFSD has the following alarms:


28 ®

SiPAP

•

an audible Whistle which sounds a constant tone when the gas imbalance limits are exceeded.

•

an audible Alarm which sounds a constant tone or two different intermittent tones; medium or high level (medium level sounds beep.beep.beep every 15 seconds and high level sounds beep.beep..beep beep beep every 10 seconds).

•

a visual Warning Bar which flashes red continuously, flashes intermittently or comes on continuously.

•

an Alarm Button on the touch screen status bar which flashes continuously.

Other indications are given to indicate the status of the condition. Refer to Table 2 for alarms and indications for specified conditions.

Diagnostic Screen

A diagnostic screen is provided for low level calibration, test procedures for valves and an error log. Figure 5 shows the screen display. Labeling of Diagnostic screen

will be the same regardless of configuration.

Figure 5 - Diagnostic Screen

-


Service Manual

29

Table 2 – Diagnostic Screen Boxes

Box Description

DIPS The DIPS box shows the position of the DIP switches on the main processor

PCB. Position 1 is on and O is off.

CONTRAST

INDICATOR

CALIBRATION

INDICATOR

The contrast indicator box is for use in the factory for setting the screen contrast.

The calibration indicator box shows during calibration, a when successfully completed and a if the calibration fails.

The following display boxes show if the values are within the set parameters, a

if the values are outside the set parameters, a if the function is not calibrated and a if the function is disabled on the DIP switch.

Table 3 – Additional Diagnostic Screen Boxes

Box Description

S/W The S/W box shows the version and serial number of the loaded firmware.

H/W

PT

LCD

The H/W box shows the status of the watchdog timer (WDG) and the EEPROM

(E

2

P).

The PT box shows the status of the Patient Trigger module.

PSU

RAILS

RS232

PRESSURE

FLOW

ZVALVE

DVALVE

PVALVE

The LCD box shows the ambient light sensor voltage (AMB), the back light level

(BLL) and if the backlight is operative (BLF - 1 for fail, O for on).

The PSU box shows the external power supply voltage (EXT), the battery voltage

(BAT), the battery charge status (CHG) and the temperature (TMP).

The RAILS box shows the ground voltage (GRD), and the control voltages (6.5,

8.2 and 10 V).

The RS232 box shows factory set data.

The PRESSURE box shows cm H

2

O pressure value, the voltage from the pressure sensor (PSEN) and the software offset (OFFS) and gain (GAIN) values.

The FLOW box shows the flow rate (LPM), the voltage from the flow sensor

(FSEN) and the software offset (OFFS) and gain (GAI N) values.

The ZVALVE box shows if the Z DRIVE is operative (ZDRV - 1 for fail, O for on) for the zero valve and the Z sensor (ZSEN) voltage.

The DVALVE box shows if the D DRIVE is operative (DDRV - 1 for fail, O for on) for the dump valve and the D sensor (DSEN) voltage.

The PVALVE box shows if the P DRIVE is operative (PDRV - 1 for fail, O for on) for the pressure assist valve and the P sensor (PSEN) voltage.


30 ®

SiPAP

Chapter 5 - Operation

Gas Flow

With the oxygen and air connections connected and the power switched on, oxygen and air at 386 kPa (56 psig) flows to the blender. The air passes through a water trap with an integral filter where any moisture in the air is removed. Oxygen and air are filtered before entering a non-return valve in the blender. The blender mixes the oxygen and air in the proportion set by the position of the FiO

2

control valve. The blender supplies blended gas between 2.5 and 30 L/min.

The blender incorporates an alarm/bypass module. If a single gas supply fails or there is an imbalance between the inlet gas pressures exceeding 200 kPa (30 psig), the module directs the flow through a reed whistle to warn the Operator of the condition and at the same time connects the inlet gas at the higher pressure to the blender outlet.

The blended gas is filtered before passing through a flow control to an oxygen analyzer. The oxygen analyzer utilizes a galvanic fuel cell to measure and display the measured delivered oxygen concentration.

A vent valve on the exhaust manifold incorporates a solenoid operated pilot valve and a large orifice spool valve. The vent valve is normally held in the open position by a spring to vent high flow rates with low pressure drops so that the patient pressure is minimal. The electrically actuated pilot valve is operated by blended gas so that the vent valve continues to operate if one gas supply is lost.

Blended gas flows through an electronically operated dump valve which is normally in the closed position. If over pressurization occurs, the sensors detect the condition and the controller signals the dump valve to open, sounds an alarm buzzer and at the same time closes the vent valve to rapidly reduce the patient pressure to near zero. When the over pressure condition stops, the controller signals the vent valve to open and the dump valve to close.

The NCPAP flowmeter is set by the Operator to the required flow. The flow rate is shown on the gauge on the flowmeter. When the flowmeter control knob is turned fully clockwise, the flow of gas is turned off.


Service Manual

31

675-120

Figure 6 - IFSD Gas Flow Schematic

The patient pressure is shown on the touch screen and is monitored by a pressure sensor which sends the signal to the main processor. A zeroing valve automatically checks the pressure readings against atmospheric pressure to ensure accuracy of the patient pressure readings.

A mechanical pop-off valve is factory set to limit the delivered pressure to a safe level sufficient to achieve the maximum required patient pressure at the generator.

Adjustment of the pop-off valve is not required by Operators.

Auxiliary Output (Optional)

Blended gas flows through a fixed flow control and non-return valve to a standard

DISS fitting on the back panel to supply a maximum 15 L/min for delivery to the patient via other sources.

Inspiratory Pressure

Blended gas passes through a variable outlet flow control and through the NCPAP

Pres high flowmeter. The NCPAP Pres high flowmeter is set by the Operator to the required flow. The outlet from the NCPAP Pres high flowmeter when not delivering to the patient flows through a restrictor to exhaust, allowing the flowmeter to be adjusted without delivering gas to the patient. The flow rate is shown on the gauge on the flowmeter. When the flowmeter control knob is turned fully clockwise, the flow of gas is turned off. The flow is directed to the patient via a high speed selector valve which operates when requested by the NCPAP Pres high timing.


32 ®

SiPAP

WARNING

The NCPAP Pres high must be adjusted to zero when not required for the patient.

Triggered BiPhasic

For BiPhasic Tr, a micro controller provides reliable indications of breaths derived from the patient abdominal respiratory sensor. It sends signals to operate the

NCPAP Pres high valve to provide a timed sigh.

WARNING

Under extreme conditions (minimum supply pressure and maximum gas demand, including auxiliary output) output flow rates may reduce.

Operation Without Electrical Power

The IFSD can be used without electrical power. In this mode, NCPAP Pres low flow only is delivered, set by the NCPAP Pres low flowmeter and the required FiO

2

level. In this mode, visual indications and warnings are not given except for the gas failure alarm.

Electronic Functions

Sensors mounted on the valve/sensor PCB monitor pressure, flow rate and oxygen.

Sense signals for each of the valves allow the micro-controller to monitor the valve’s state and determine whether the valve is connected or short circuited. Current to the valve sensor PCB is limited via the fuses below a 10 VA limit to ensure safety in a possible oxygen enriched environment.

The patient trigger PCB interfaces with the main processor PCB via a 20 way head.

Communication between the two PCB’s is via a CAN bus. The main processor PCB also supplies +5 V power to this PCB and monitors other control signals.


Service Manual

33

Figure 7 - IFSD Electronic Enclosure

Electrical Layout

Figure 8 shows the electrical wiring and PCB connector layout.

675-120

Figure 8 - IFSD Electrical Wiring Diag r am


34 ®

SiPAP

Fault Management

When a software detectable fault condition occurs, the unit still allows a basic level of treatment to the patient. Table 4 shows the fault conditions and the level of control available.

Table 4 - Faults, Available Modes and Control Functions

FiO

2

CmH

2

O NCPAP

NCPAP+ BiPhasic BiPhasic

Apnea + Apnea Tr

Fault lockout screen shows error code(s).

Error code(s) shown on mode selection screen. Status bar mode alternates with

Unit inoperable by software, operable in unpowered pneumatic d l

Unit restricted to

NCPAP and

NCPAP+Apnea modes.

Error code(s) shown on mode selection screen. Status bar mode lt t ith

Battery status shows discharged battery.

Patient trigger

(NCPAP+Apnea,

BiPhasic+Apnea and

BiPhasic Tr) modes not available.

Unit will not operate on battery power when external power supply is removed.

X X X X X X

3

3

3

3

3

3

3

3

3

3

X

3

X X

3

3

X

3


Service Manual

35


Service Manual

Chapter 6 - Operation

36

The operating procedures below show the procedures for all models. Reference should only be made to the procedures for the model in use. Read the Warnings and

Cautions at the beginning of this manual before you start the procedures.

Preparing and Connecting the Equipment

WARNING

Ensure the whistle sounds during gas connection, if not the device may be faulty and should not be used.

1 Connect the Medical Air and Oxygen hoses to the IFSD connections on the back panel.

Note

The gas failure alarm/bypass warning whistle sounds until the pressures balance.

WARNING

Only use the supplied AC cable to connect to the power supply.

2 Connect the power supply cable to a suitable power supply outlet. The green power light will come on regardless of the position of the power switch.

3 Connect the patient circuit to the IFSD as required. Figure 9 shows a typical configuration, the actual configuration may vary dependent on the type of ancillary equipment used and the clinical needs prescribed for the patient. For functional test purposes, the Generator nasal prongs can be occluded to simulate patient responses.

4 Connect the transducer module to the sensor and to the IFSD. For functional test purposes, lightly tap the abdominal respiratory sensor to simulate patient breathing.


Service Manual

37

675-120

Figure 9 - Patient Connections

WARNING

Check that the water trap is empty before use and empty it frequently during use.


38 ®

SiPAP

5 Make sure that the water trap is empty. If necessary, empty any water from the trap (refer to Chapter 3, Maintenance).

6 Gas Flow Pressure Setting

The IFSD provides a virtually constant airway pressure irrespective of patient demand or expiratory flows via the specially designed generator and nasal prongs. This is the reason for the IFSDs ability to provided superior NCPAP. The IFSD is subject to a direct relationship between controlled enriched gas flow and NCPAP pressure.

A nomogram illustrating the relationship between constant airway pressure and flow settings is shown in Figure 10. Example: 8 L/min gas flow provides 5 cm H

2

O

NCPAP.

Note

Individual devices have a tolerance of up to ± 10% from that illustrated in the nomogram and in particular, at pressures below 2 cm H

2

O.

675-120

Figure 10 - Flow Pressure Nomogram


Service Manual

39

Switching On the IFSD

WARNING

Do not attach the Generator to the patient until the initial set up is complete.

Put the power switch on the back panel to the position.

•

the warning bar comes on

•

the green power light remains on

•

the audible alarm sounds

The unit carries out a full functional check. If the checks are not successful (program memory fault, power supply not connected or emergency battery voltage low), the screen remains black and the warning bar stays on.

If the checks are successful, the warning bar goes off and the screen changes to the

Power Up Screen.

After two seconds the screen changes to the Power Up Check Screen.

During the power up checks:

•

the screen image is shown in negative

•

the warning bar comes on for one second

•

the Apnea light comes on for one second

•

the audible alarm sounds for one second

•

the dump valve is tested

•

the pressure is set to zero

After two seconds the screen changes to the Start Up Screen.

•

the alarm limits are disabled

A flashing question mark alternating with a red cross appears under the first adjustment to be made.

To calibrate the O

2

fuel cell, refer to Page 42.

Note

Where a mode is not applicable (e.g. Patient Trigger), the button is blank and the icons are not shown.


40 ®

SiPAP

Setting Up the Equipment

The procedures show the screen set up for all modes. If a mode is not applicable to the model in use, go to the next applicable step.

Adjust the NCPAP Pres low flowmeter to indicate the required flow rate. When done, touch the flashing button to confirm the initial setting

The button icon changes to a and the next button starts flashing.

Set the FiO

2

and NCPAP Pres high flow as appropriate, touching the confirm each time.

WARNING

Ensure that the pressure is consistent with the flow rate.

button to

WARNING

Verify that the displayed value for delivered FiO

2

corresponds to the value set on the blender. Refer to Faults and Indications.

If an alarm is activated, the button displays a flashing cross. The alarm condition must be cleared before the setting is confirmed (refer to Table 1) .

WARNING

The indicates a connection between the transducer interface and the unit.

It does not indicate correct positioning of the abdominal respiratory sensor.

Note

All triggered modes (NCPAP+Apnea, BiPhasic+Apnea, BiPhasic Tr) are automatically confirmed with a if the patient trigger is connected.

When all of the initial settings have been confirmed (NCPAP Pres low, FiO

2

, NCPAP

Pres high and/or Respiratory sensor) the screen changes to the Adjust Screen.

•

the alarm limits remain disabled

To set the alarm limits, touch the NCPAP button or the alarm button for three seconds. If a button is not touched within two minutes, the alarm limits will be automatically set.

Note

NCPAP+Apnea, BiPhasic+Apnea, BiPhasic Tr selection buttons are not lit if the transducer interface box is not connected to the IFSD.


Service Manual

When the alarm limits have been set, the screen changes to the Mode Selection

Screen and defaults to the nCPAP mode.

•

the alarm limits are set

41

Touch NCPAP, NCPAP+Apnea, BiPhasic, BiPhasic+Apnea, or BiPhasic Tr to enter the Parameter Set up Screen for each mode.

Note

When the Mode Selection screen is showing, NCPAP treatment will always be delivered.

After two minutes if the Operator has not made any inputs, the screen changes to the

Locked Screen.

•

the key pad is locked

•

the display remains as shown for patient monitoring

Touch the button for three seconds to unlock the key pad.

•

the display returns to the Mode Selection Screen

Note

If a high priority alarm occurs, the keypad automatically unlocks.

Setting the NCPAP Parameters

For NCPAP+Apnea function the transducer interface and the abdominal respiratory sensor must be connected.

From the Mode Select Screen touch the NCPAP + Apnea button.

The screen changes to the Parameter Set Up Screen and shows:

•

the patient respiration rate (Rsp)

•

the delay time for the alarm to come on Tapnea

•

the Inspiratory time for a manual sigh

Use the buttons to set the alarm delay time.

Confirm the settings by touching the flashing button. When the settings have been accepted, the screen changes to the Locked Screen.

Touch the button to unlock the key pad.

•

the display changes to the Parameter Adjust Screen


42 ®

SiPAP

Note

If a high priority alarm occurs, the key pad automatically unlocks.

To return to the Mode Selection Screen, touch the button.

Setting the BiPhasic Parameters

For BiPhasic+Apnea function the transducer interface and the abdominal respiratory sensor must be connected.

From the Mode Select Screen touch the Biphasic button.

The screen changes to the Parameter Set Up Screen and shows :

•

the NCPAP Pres high inspiration time (Ti)

•

the NCPAP Pres high respiration rate (R)

•

the Inspiration/Expiration ratio (I/E)

Note

If a transducer interface is connected to the unit, is displayed and BiPhasic +

Apnea monitoring mode is enabled. In addition to the above parameters, the screen shows:

•

the detected breath bar graph

•

the detected breath rate (Rsp)

•

the delay time for the alarm to come on (Tapnea)

Push the individual buttons to select between the parameters Ti, Rate, and Tapnea.

Use the buttons to set the parameter for Ti, Rate, and Tapnea.

Note

The I/E rate changes accordingly.

Confirm the BiPhasic settings by touching the flashing BiPhasic or BiPhasic + Apnea button.

When the settings have been accepted, the screen changes to the locked screen and treatment starts.

To adjust the parameters, touch the button.

The screen changes to the BiPhasic or BiPhasic + Apnea Adjust Screen.


Service Manual

Parameters Ti and Rate can now be adjusted.

Note

The I/E rate changes accordingly.

43

To return to the Mode Selection Screen, touch the button.

Note

The button is shown with a pink background if an alarm condition occurs. If this occurs, the button cannot be operated until the alarm condition has been cleared or silenced using the alarm button.


Locked Screen.

•


•


Touch the button to unlock the keypad.

•

the display returns to the BiPhasic or BiPhasic + Apnea Adjust Screen

Note

If a high priority alarm occurs, the keypad automatically unlocks.

Setting the Triggered BiPhasic Parameters

From the Mode Select Screen touch the BiPhasic Tr button.

Note

The transducer interface must be connected to enter this mode.

The screen changes to the Parameter Set Up Screen and shows:

•

the patient’s respiration rate (Rsp)

•

the NCPAP Pres high inspiration time (Ti)

•

the NCPAP Pres high backup respiration rate (Rb)

•

the delay time for the apnea alarm to come on (Tapnea)

Press each individual button to select between the parameters Ti, Rb and Tapnea.

Use the buttons to set the parameter for Ti, Rb and Tapnea.


44 ®

SiPAP

Confirm the BiPhasic Tr settings by touching the flashing BiPhasic Tr button.

When the settings have been accepted, the screen changes to the locked screen and treatment starts.

To adjust the parameters, touch the button.

The screen changes to the BIPHASIC TR Adjust Screen.

Parameters Ti, Rb and Tapnea can now be adjusted.

To return to the Mode Selection Screen, touch the

Note

button.

The button is blank if an alarm condition occurs. If this occurs, the button cannot be operated until the alarm condition has been cleared or silenced using the alarm button.


Locked Screen.

•


•


Touch the button to unlock the key pad.

•

the display returns to the BiPhasic Tr Adjust Screen

Note

If a high priority alarm occurs, the key pad automatically unlocks.

Calibration

WARNING

Calibration must only be done when the unit is not connected to the patient.

From the Start Up Screen touch the button.

The screen changes to the Calibration Screen.

•


Turn the FiO

2

control to 21 and confirm by touching the flashing

Turn the FiO

2

control to 100 and confirm by touching the flashing

button.

button.


Service Manual

Touch the button.

The screen returns to the Start Up Screen .

Note

If the calibration procedure fails, a red is shown in the applicable button. Recalibrate and if necessary, replace the O

2

fuel cell.

45

Giving a Manual Timed Sigh

In the Mode Select or Adjust screens of NCPAP+Apnea, BiPhasic+Apnea or BiPhasic

Tr - touch the button to give the patient a manual timed sigh.

Operation Without Electrical Power

The IFSD can be used without mains or battery power. To use the IFSD in this mode, set the required NCPAP flow on the NCPAP Pres low flowmeter and the required FiO

2

level. All audible and visual indications and warnings are not given except for the gas failure alarm/bypass which will operate until pressures are balanced.

Fault Indications

Refer to Table 1 (all models) and Table 2 (BiPhasic and BiPhasic Tr models only) for the fault indications for specific faults and the procedures for resetting or canceling.

Discharged Battery

When the battery voltage is too low to power the circuits, the screen changes to the

Power Down Screen.

•

all functions and controllable inputs are disabled

•

the controller waits for the power source to be connected

•

when external power is restored, the screen changes to the Power Up Screen

•

the screen goes blank when the battery power is too low to power the Power

Down Screen

Fault Lockout

If a fault occurs which is detectable by the software and prevents the unit from operating correctly, the screen changes to the Fault Lockout Screen.

•

all functions and controllable inputs are disabled but the unit can still be used without electrical power

•

the related fault code numbers are shown on the screen


46 ®

SiPAP

•

the alarm bar comes on and the predominant fault code number is shown in the status bar

If an error code is shown, refer to the Service Manual or contact your Service

Engineer to rectify the faults.

Over Pressure Indications

If an over pressure occurs, the software opens the dump valve to release the pressure.

•

the upper pressure limit is shown in red

•

the pressure display flashes

•

when the pressure drops below the lower limit, the lower limit is shown in red and the pressure flashes alternately between the limits

Rectify the fault by adjustment of the high pressure and touch the warning button for three seconds to reset.

Table 5 - Faults and Indications

Alarm Method of Setting

Indications and

Actions

Method of Resetting or Canceling

Minimum oxygen concentration

(< 18 FiO

2

).

Always active when power is on.

Intermittent high level

Audible Alarm.

Warning Bar flashes.

FiO

2

display flashes.

Digital O

2 alarm low limit is highlighted.

Alarm Button flashes.

Restore FiO

2

level to above the low limit then push Alarm

Button for three seconds.

Over pressure

(Patient pressure

> 11 cmH

2

O when in

NCPAP mode).



Audible Alarm.


Pressure display flashes.

Digital high-pressure alarm limit is highlighted.


Dump valve actuated for three seconds to stop flow to patient and repeated until flow returns to normal.

Reduce pressure to below the high pressure limit then push the Alarm



Service Manual


Indications and

Actions

High oxygen concentration

(> 5 FiO

2

above set point at time alarm is set for 15 seconds, or

> 104 FiO

2

for > 15 seconds).

Set automatically on entering NCPAP mode for the first time after start up or by pushing the Alarm

Button for three seconds at any time.


Audible Alarm.


O

2

digital display flashes.

Digital O

2

alarm high limit is highlighted.


47


Push the Alarm

Button once to stop the Audible Alarm for

30 seconds (Alarm

Button flashes, digital

O

2

alarm high limit stays highlighted,

Warning Bar still flashes).

Push the Alarm

Button for three seconds to reset the limit (alarms clear).

Low oxygen concentration

(< 5 FiO

2

below set point at time alarm is set for 15 seconds, or

< 20 FiO

2

for > 15 seconds).

Set automatically on entering NCPAP mode for the first time after start up or by pushing the alarm button for three seconds at any time.


Audible Alarm.


O

2


Digital O

2

alarm low limit is highlighted.


Push the Alarm


30 seconds (Alarm

Button flashes, digital

O

2

alarm low limit stays highlighted,

Warning Bar still flashes).

Push the Alarm


High NCPAP pressure (>

3 cmH

2

O above set point at time alarm is set for 15 seconds).



Audible Alarm.



Digital pressure high limit is highlighted.


Push the Alarm

Button once to stop the audible alarm for

30 seconds (Alarm

Button flashes, digital pressure high limit stays highlighted,

Warning Bar still flashes). Push the

Alarm Button for three seconds to reset the limit (alarms clear).


48 ®

SiPAP

Alarm

Low pressure

(< 2 cmH

2

O below set point for 15 seconds) or

< 1 cmH

2

O at any time).

Method of Setting

Indications and

Actions



Audible Alarm.



Digital pressure low limit is highlighted.



Push the Alarm


30 seconds (Alarm

Button flashes, digital pressure low limit stays highlighted,

Warning Bar still flashes ).

Push the Alarm


Over pressure (Patient pressure

> 11 cmH

2

O when in

BiPhasic or BiPhasic Tr mode).



Audible Alarm.


O

2


Digital O

2 alarm low limit is highlighted.


Reduce pressure to below the high pressure limit then push the Alarm


High BiPhasic/ BiPhasic

Tr pressure

(MAP > 3 cmH

2

O above set point at time alarm is set for 15 seconds).



Audible Alarm.


High MAP pressure display flashes.

Digital high MAP pressure limit is highlighted.


Push the Alarm


30 seconds (Alarm

Button flashes, digital high MAP pressure limit stays highlighted, Warning

Bar still flashes).

Push the Alarm


Low battery charge

(< 40%).

Automatic Battery status indicator changes from gray to red.

Connect external power.


Service Manual

49

Alarm

Low battery voltage

(< 10 V for 5 seconds).

Battery fault

(Battery disconnected or failing to take or hold charge).

Method of Setting

Indications and

Actions


Automatically constantly monitored with the power switch in the on position with no external power connected.

Intermittent medium level Audible Alarm.

Warning Bar flashes intermittently.

Battery status indicator flashes.

Unit starts a controlled shut down at a set limit.

Push the Alarm

Button once to stop the Audible Alarm for three minutes (Alarm

Button flashes, battery status indicator stays flashing).

Connect external power (alarms clear).

Visual alarms remain until battery charge state is above low

Automatic Intermittent high level

Audible Alarm.


Battery status indicator flashes.

Screen displays flashing fault code (E number)

Cannot be reset.

Push the Alarm


60 seconds.

Refer to Service

Engineer.

External power disconnected.

Automatic Intermittent high level

Audible Alarm.


Battery status indicator and power indicator alternately flash.

Push the Alarm

Button once to stop the audible alarm.

(The Warning Bar stops flashing and the battery status indicator is displayed.)

Reconnect the external power.

Software fault Automatic Intermittent high level

Audible Alarm.


Screen displays flashing fault code (E number).

Cannot be reset.

Refer to Service

Engineer.


50 ®

SiPAP


Indications and

Actions


Software not running with unit connected to power

Blender whistle Water trap blocked, full or leaking; filters blocked; loss of wall pressure; imbalance of wall gas supply.

Alarm.

Warning Bar on.


Audible Alarm.

Refer to Service

Engineer.

Refer to Service

Engineer.

Oxygen cell calibration error.

Automatic monitoring

(oxygen cell incorrectly calibrated, damaged or depleted).

Difference between displayed and set value.

Calibrate or replace oxygen cell. Refer to

Service Manual.

Flowmeter fault. Flowmeter fault

Electrical fault. Electrical fault

No flow indications or flow cannot be adjusted.

Refer to Service

Engineer.

External power light does not match screen icon.

Refer to Service

Engineer.


Service Manual

51


Indications and

Actions


Low breath rate

(Rr = 0 for > breath rate timeout as determined by patient trigger module).

Set automatically on entering BiPhasic Tr,

NCPAP + Apnea or

BiPhasic +Apnea modes if patient trigger is installed and selected.


Audible Alarm.


Breath rate digital display flashes.

Breath rate icon flashes.

In BiPhasic models with monitored NCPAP

+ Apnea, a single sigh is given.

In BiPhasic Tr Mode backup sighs at the set rate are given.


The timer is reset and the applicable sigh function is repeated until breathing restoration is detected or the Operator intervenes.

Push the Alarm


30 seconds (Alarm

Button flashes, breath rate icon and digital display still flashes, Warning Bar still flashes, in

BiPhasic Tr Mode backup sighs at the set rate continue).

Restore patient breathing.

If breath detection is restored before the next breath rate timeout period has elapsed, the alarm condition is automatically cleared.

BiPhasic/BiPhasic Tr mode fails to operate as set.

Automatic monitoring Intermittent high level

Audible Alarm.


NCPAP Pres high on time display flashes.


Cannot be silenced

Revert to NCPAP mode or refer to

Service Engineer.


52 ®

SiPAP

Diagnostics

Diagnostic mode is accessed by enabling DIP switch 6 and exited by disabling it.

Enable DIP switch 6 during Start Up, Adjust or Mode Selection.

The screen changes to the Diagnostics Menu Screen (for a description of the displayed information refer to paragraph 1.2.5):

•


•

low level calibration procedure for pressure, oxygen and flow sensors are available via the key pad

•

test procedures for valves and user interface are available via the key pad

•

the error log is accessible via the key pad

Select to carry out a pressure calibration

The diagnostic main screen stays the same and the key pad layout changes. Touch the first key to calibrate at 0 cm H2O followed by the second key to calibrate at 10 cm H2O.

To return to the Diagnostics Menu Screen, touch the button.

Select to carry out an oxygen calibration

The diagnostic main screen stays the same and the key pad layout changes. Touch the first key to calibrate at 21 % O

2

followed by the second key to calibrate at 100 %

O

2

.


Select to enter a security code.

In order to upgrade features on the unit, a security code must be obtained from

VIASYS Technical Support (see fig 5a). After the code is entered, the customer’s unit can be upgraded to different feature sets as laid out by Marketing.


Service Manual

53

Figure 11 – Security Screen


Select to carry out a valve test

The diagnostic main screen stays the same and the key pad layout changes. Touch the first key to test the zero valve, the second key to test the dump valve and the third key to test the PA valve.


Select to carry out a user interface test

The diagnostic main screen stays the same and the key pad layout changes. Touch the first key to test the battery, the second key to test the audible alarm and the third to test the respiratory indicator.


Touch the button to show the Error Log Screen

The screen changes to the Error Log Screen and shows a list of error code numbers.

The error code is:

•

shown normal if it has occurred since the last reset

•

shown grayed if it is inactive since the last reset

•

flashing if the error is active since power up or last cleared

To mute flashing errors, the button.

Refer to Table 6 for the details of error codes and corrective action.

When the corrective action has been taken, to clear all faults the button.


54 ®

SiPAP

Table 6 - Error Codes

Error

Code

Fault Condition Consequence

Software

Response

Corrective

Action checksum error.

Unusable – Software corrupt, execution inhibited.

- Battery too discharged

(<6.5 V) to operate LCD, analogue and valve driver circuits (no external power).

Unusable - no user interface display.

Hardware held in permanent reset condition with

Warning Bar on.

Reload software.

Hardware held in reset condition with Warning Bar

(status LED off) on until external power applied.

Plug in external power.

User lockout

‘Plug in external power’ prompt

Plug in external power.

- Battery too discharged

(<10 V) to operate analogue and valve driver circuits but sufficient for

LCD driver (no external power).

Unusable – sensor readings invalid.

E10 Non-volatile memory fault. Unusable - unable to retrieve/set unit configuration and calibration data.

E11 Calibration data lost. Unusable – sensor readings invalid.

User lockout

‘Error number’ prompt.

User lockout


Replace main control PCB.

E12 Configuration DIP settings and/or PT PRESENT different to non-volatile configuration record.

Unusable – possible incomplete unit set up performed.

User lockout


Put the unit into diagnostics mode (DIP6

ON) and recalibrate O

2 and pressure sensors.

Ensure that all the DIP switch settings are correct and the patient trigger board/cable are correctly attached (if required). Put the unit into diagnostics mode, clear the E12 error, then return to normal mode.


Service Manual

55

Error

Code

Fault Condition watchdog disabled.

Consequence

Software

Response

Corrective

Action

E20 Charged battery voltage too low (<11 V) when under test load.

No backup – battery capacity low.

Battery fault icon flashes and ‘Error number’ alarm prompt.

Replace battery or charger.

E21 External supply voltage too low (<14 V) to charge battery (battery flat).

No backup – battery will not charge.

Battery low alarm continues even when external power applied.

‘Error number’ alarm prompt.

Replace the

PSU module.

E22 Analog supply rails out of limits.

Unusable - unreliable sensor readings.

User lockout


E23 Valve driver supply rails out of limits.

Unusable - unreliable valve operations.

User lockout


Replace the main control

PCB and re-calibrate O



PCB and recalibrate O


Unusable – valve disabled.

User lockout


E31

(ADC hits rail).

Zero valve not connected

(via sense).

Unusable – pressure sensor readings invalid.

Unusable – pressure sensor readings unreliable.

User lockout


User lockout


Power cycle unit. If fault still occurs, replace the main control



Replace the pneumatics

PCB and recalibrate O






56 ®

SiPAP

Error

Code

Fault Condition

E32 Zero valve activation fault

(via sense).

E33 Unable to auto zero pressure sensor.

Consequence



Software

Response

User lockout


User lockout


Corrective

Action







E41

E42

Dump valve not connected

(via sense).

Dump valve activation fault

(via sense).

Restricted - no over pressure protection.

Restricted - no over pressure protection.

Restricted mode





Restricted mode





E50 Oxygen sensor fault (ADC hits rail).

Unusable – oxygen sensor readings invalid.

User lockout


E51 Oxygen sensor cannot be calibrated by user (bad offset or high gain).

Unusable – possible fuel cell, electronic, blender or gas supply fault.

User lockout





Check the

Error Log screen in diagnostics mode. If an

E52 error also occurs, replace the fuel cell and recalibrate the

O

2 sensor- otherwise check the blender and gas supplies.


Service Manual

57

Error

Code

Fault Condition

E52 Oxygen sensor calibrates but the fuel cell is worn out

(low gain).

E53

E54

E61

E62

E70

Oxygen sensor too noisy to calibrate (calibration timeout).

Oxygen calibration suspect

(oxygen value has been measured as outside range

18 – 104%)

NCPAP Pres high valve not connected (via sense).

NCPAP Pres high valve activation fault (via sense).

PT module fault (PTRDY or CAN bus failure).

Consequence

Unusable – oxygen sensor readings unreliable.

Unusable – oxygen sensor readings unreliable.

Oxygen sensor readings unreliable

Restricted -

BiPhasic/BiPhasic unusable.

Restricted -

BiPhasic/BiPhasic Tr unusable.

Software

Response

Corrective

Action

User lockout


User lockout


Replace the

O

2

fuel cell and recalibrate the

O

2

sensor.

Replace the

O

2

fuel cell and recalibrate the

O

2

sensor.

“E##” alarm, nonmutable, pending oxygen recalibration

Recalibrate O

2 sensor. If this fails replace the O

2

cell and recalibrate.

Restricted mode.



PCB and recalibrate the

O

2

and pressure sensor.

Restricted mode.



PCB and recalibrate the

O

2

and pressure sensor.

Untriggerable - Apnea and PT unusable.

Reduced functionality


E71 No breath signal from PT module although CAN

E72 data does not report

Apnea.

No trigger signal from PT module in BiPhasic Tr mode.

Untriggerable - Patient may be in Apnea but

PT module may be dysfunctional.



Untriggerable – No

BiPhasic Tr treatment given to patient.



Check the

Patient

Trigger interface module/cables are correctly connected.

Replace the

Patient

Trigger board/cable.

Replace the

Patient

Trigger board/cable.


58 ®

SiPAP

Error

Code

Fault Condition Consequence

Software

Response

Corrective

Action interrupt, XTAL fails, stack overflow/ underflow, CPU

Class B exception.

Spurious – software interrupted and restarts

(possibly during treatment).

Hardware reinitialized

(disabled) with alarm bar on and audible alarm sounding to identify root cause.


PCB and recalibrate O


E91

E99 software or watchdog reset.

Internal software error detected.

Unknown error detected.

Spurious – software restarts possibly during treatment.

Software restarts





Unusable – software unreliable.

User lockout


Unusable – software unreliable.

User lockout








* - Generated as a consequence of the fault.


Service Manual

59


Service Manual

Chapter 7- Maintenance

60

Cleaning

CAUTION

Do not immerse any part of the IFSD in water or sterilize it with gas or steam.

1 Clean the exterior surfaces of the IFSD and the transducer interface with a mild soap or liquid disinfectant solution. Do not use cleaning agents that contain abrasives.

2 Make sure that cleaning agents do not enter the unit through patient connection ports.

Maintenance

WARNING

Oxygen vigorously accelerates combustion. To avoid explosion hazard, do not use any instrument or other equipment that may have been exposed to oil or grease contamination.

General

1 Examine the exterior of the case for damage and dirt. If necessary clean the unit.

2 Check the water trap on the back panel. If water is visible in the water trap, push the button on the bottom of the water trap to release the water.

3 Technical Assistance can be obtained from the offices listed at the beginning of this manual.

4 Store the unit in a clean dry location. Make sure that the connections and ports are suitably blanked to prevent the ingress of dirt, moisture and foreign objects. If the unit is not being used for a long period of time, remove the battery.

5 Dispose of scrap units in accordance with the local regulations

Removal and Fitting of Parts – General

1 Only parts approved by VIASYS Healthcare may be used in this unit.

2 Remove all attached patient connections before removal of parts. Disconnect the unit from the power supply.

3 Place the unit on a stable, clean work surface before removal of parts.


Service Manual

4 Numbers in parenthesis in the Removal/Fitting procedures are the item numbers on the associated figure.

5 Lubricate new O-rings before installation with grease, Krytox 240AC before installation.

61

Maintenance Frequencies

Table 7 shows the recommended frequencies for replacement of components.

Table 7 - Maintenance Frequencies

Battery Annually

Oxygen Filter

Fuel Cell Filter/Restrictor

Fuel Cell

Annually

Annually

Annually

Blender (Check Valves and Filter) Annually

Water Trap Filter

Pilot Drive Check Valves

Annually

Annually

Case Bleed Filtered Restrictor Annually

Blender Alarm and Bypass

Components (by replacement of blender or Blender Overhaul Kit

Every Two Years

Solenoid Valve (by replacement of

Valve/Sensor PCB)

Every Five Years


62 ®

SiPAP

Removal and Fitting of Case

Refer to Figure 12.

Removal

1 Remove the ten screws (1) on the rear panel.

2 Pull off the case (2).

Fitting

1 Install the case (2) over the main frame, making sure that all wires and pipes are secure and cannot be trapped by the case.

2 Install the ten screws (1) on the rear panel and tighten.

3 Carry out an Oxygen Leak check (see Appendix A) and functional check of the

IFSD.

Note: An Oxygen Leak test must be done after every service that requires removal of the case to ensure no buildup of oxygen is present within the case.

Figure 12 - Case Removal/Fitting

Removal and Fitting of Battery

Refer to Figure 13.

Removal

1 Remove the case.


Service Manual

63

2 Disconnect the battery lead connector SK3 (1) (cable 5) from the plug PL3 on the Main Processor PCB. Remove the screw (2) on the rear panel and remove the spacer (3) complete with compression pad.

3 Pull the battery (4) complete with lead from the compartment.

Note

The battery is held in position in the compartment by up stands (5) on the frame.

4 Feed the battery lead through the frame, pull the grommet (6) from the recessed hole in the frame and remove the battery.

Fitting

1 Feed the battery lead through the frame to plug PL3 on the Main Processor

PCB.

2 Slide the battery into the compartment between the two upstands (5) and position the grommet (6) in the recessed hole in the frame.

3 Install the spacer (3) the correct way round so that the compression pad is located in the center of the battery and secure in position with the screw (2).

Tighten the screw (2).

4 Connect the battery lead connector SK3 (1) to the plug PL3 on the Main

Processor PCB.

5 Refit the case.

6 Carry out an Oxygen Leak check (See Appendix A)and functional check of the

IFSD.


64 ®

SiPAP

Figure 13 - Battery Removal/Fitting


Service Manual

Removal and Fitting of Oxygen Filter

Note

This procedure can be done without removing the case.

65

Refer to Figure 14.

Removal

1 Remove the banjo screw (1) on the end of the air/oxygen mounting block (2).

2 Remove the filter (3).

3 Remove and discard the O-ring (4).

Fitting

1 Install a new O-ring (4) on the banjo screw (1).

2 Install a new filter (3) in the air/oxygen mounting block and install the banjo screw (1).

3 Tighten the banjo screw (1).

Figure 14 - Oxygen Filter Removal/Fitting


66 ®

SiPAP

Removal and Fitting of Fuel Cell Filter/Restrictor

Refer to Figure 15.

Removal

1 Remove the case .

2 Remove the oxygen filter screw (1) from the flow mixer block (2). Remove the filter/restrictor (3). Remove and discard the O-ring (4) and the O-ring (5) from the oxygen filter screw (1).

Fitting

1 Install a new O-ring (5) on the oxygen filter screw (1). Install a new O-ring (4) and the filter/ restrictor (3) into the flow mixer block (2). Install the oxygen filter screw (1) and tighten.

2 Refit the Case.

3 Carry out an Oxygen Leak check (see Appendix A)and functional check of the

IFSD and calibrate the fuel cell.

675-120

Figure 15 - Oxygen Filter Restrictor Removal/Fitting


Service Manual

67

Removal and Fitting of the Fuel Cell

Refer to Figure 16.

Removal

1 Remove the case.

2 Disconnect the connector SK12 (1) from the top of the fuel cell.

3 If necessary, remove the screw (2) securing the C clip (3) and release the C clip securing the cable (cable 7) and the ferrite.

4 Unscrew the fuel cell (4) from the flow mixer block (5).

Note

The fuel cell is installed finger tight, but it may be necessary to use a suitable wrench on the flats at the top of the fuel cell to remove it. The leak compensation pipe (6) can also be disconnected from the elbow to gain access.

5 Discard the fuel cell (4) and attached O-ring.

Fitting

1 Check the expiration date of the new fuel cell. Remove the fuel cell from the sealed package and check that the fuel cell has an O-ring installed above the threads.

2 Screw the fuel cell (4) into the flow mixer block (5) and tighten finger tight.

3 If removed, secure the cable (cable 7) and the ferrite with C clip (3) and the screw (2).

4 5 Connect the connector SK12 (1) to the fuel cell.

5 Refit the case.




68 ®

SiPAP

Figure 16 - Fuel Cell Removal/Fitting

Removal and Fitting of Blender and Components

Refer to Figure 17.

Removal

1 Remove the case.

2 Remove the battery.

3 Disconnect the connector SK1 (1) on the LED PCB.

4 Disconnect the connector SK5 (2) on the Main Processor PCB.

5 Disconnect the connector at PL5 (3) on the Patient Trigger PCB.

6 Remove the input connection tube (4) by pulling the elbow off the

1

/

8

“ silicone tube, taking care not to break the barbs on the elbow.

7 Remove the cover (6) from the front of the FiO

2

control knob (7) and the two covers (8) from the front of the NCPAP Pres low and NCPAP Pres high flow control knobs (9) by gently prying out of the recess in the knob with a small screwdriver.

8 Using a screwdriver or Circle pliers, unscrew the central securing nuts for the flowmeter knobs and pull off the control knobs (9).

9 Using the Special wrench, unscrew the collet on the front of the FiO

2

control knob (7), remove the collet and pull off the control knob (7).

10 Remove the eight screws (10) from the front panel (11).

11 Pull the front panel assembly (11) off the frame, taking care not to damage any tubes.

12 Remove and discard the O-ring (12).


Service Manual

69

13 Remove the Valve/Sensor PCB (13) as follows: a Disconnect the fuel cell connector SK1 (14) at PL1 on the Valve/Sensor

PCB. b Disconnect the dump/vent valve connector SK3 (15) at PL3 on the

Valve/Sensor PCB. c Remove the five screws (16). d Pull the Valve/Sensor PCB (13) downwards and out forward to disconnect the PCB from the D plug PL2. e Disconnect the exhaust tubes and the PA flow tube and remove the

Valve/Sensor PCB.

14 At the blender, disconnect the air supply (17), the oxygen supply (18), the whistle outlet tube (19) and the main outlet (20).

15 Remove the four screws (21) securing the blender (22) and remove the blender. Do not remove the collet knob on the front of the blender.

16 Remove the pilot drive check valves as follows: a Disconnect the cylinder body (23) from the tee piece (24) and elbow

(29). b Hold the nut (25) and unscrew the cylinder body (23). c Remove the duckbill check valves (26), guide (27) and seat (28). d Discard the duckbill check valves (26).

17 Replace the blender check valves and filter at the blender inlet (refer to the

Blender Service Manual if installing the Blender Overhaul Kit).

18 Replace the blender alarm bypass components (refer to the Blender Service

Manual if installing the Blender Overhaul Kit).


70 ®

SiPAP

675-120

Figure 17 - Blender and Components Removal/Fitting

Fitting

1 Fit new pilot drive check valves as follows: a Fit the seat (28), a duckbill check valve (26), the guide (27), the second duck bill check valve into the cylinder (23). b Hold the nut (25) and tighten the cylinder body (23). c Connect the cylinder bodies (23) to the tee pieces (24) and connect the elbows (29).

2 Fit the blender or refurbished blender (22) with the four screws (21) into the front frame panel.

3 Connect the air supply (17), the oxygen supply (18), the whistle outlet tube (19) and the main outlet (20).

4 Fit the Valve/Sensor PCB (13) as follows: a Connect the exhaust tubes and the PA flow tube.


Service Manual b Fit the Valve/Sensor PCB (13) to the D plug PL2. c Fit the five screws (16). d Connect the fuel cell connector SK1 (14) at PL1 on the Valve/Sensor

PCB. e Connect the dump/vent valve connector SK3 (15) at PL3 on the

Valve/Sensor PCB.

5 Fit a new O-ring (12) to the front panel assembly.

6 Fit the front panel assembly (11) and install the eight screws (10).

71

7 Set the FiO

2

collet on the blender to the 21 % position. Align the control knob

(7) so that the pointer is in the 21 % position and install the control knob. Secure the control knob with the nut and tighten. Install the cover (6).

8 Install the NCPAP Pres low and NCPAP Pres high flow control knobs (9) on the spindles. Using a screwdriver or Circle pliers tighten the central securing nuts. Install the covers (8).

9 Install the input connection tube (4) on the elbow of the

1

/

8

“ silicone tube.

10 Connect the connector at PL5 (3) on the Patient Trigger PCB.

11 Connect the connector SK5 (2) on the Main Processor PCB.

12 Connect the connector SK1 (1) on the LED PCB.

13 Install the battery.

14 Carry out an Oxygen Leak check (see Appendix A )and functional check of the


Removal and Fitting of Water Trap Filter

Refer to Figure 18.

Removal

1 Remove the case.

2 Remove the filter bowl (1) with the Special Spanner.

3 Pull out and discard the filter (2) from the water trap.

Fitting

1 Install the new filter (2) in the water trap.

2 Screw on the water trap bowl (1) and tighten using the Special Spanner.

3 Install case.


72 ®

SiPAP

Removal and Fitting of Case Bleed Filtered

Restrictor

Refer to Figure 18.

Removal

1 Remove the case.

2 Remove the case bleed filtered restrictor (3) from the pipe.

3 Discard the case bleed filtered restrictor (3).

Fitting

1 Install the new case bleed filtered restrictor (3).

2 Screw on the water trap bowl (1) and tighten using the Special Spanner.

3 Install case.

675-120

Figure 18 Water Trap Filter Removal/Fitting


Service Manual

73

Removal and Fitting of PA Solenoid Valve

The PA Solenoid Valve is replaced by replacing the Valve/Sensor PCB

Removal

1 Remove the case.

2 Remove the Valve/Sensor PCB.

Fitting

1 Install the new Valve/Sensor PCB.



Firmware Reload/Upgrade

The firmware reload/upgrade uses a Software Download Utility (P/N 675-821) and a download cable (P/N 675-819). Please contact Technical Support for Security

Password. To reload/upgrade the firmware:

1 Remove the case from the IFSD.

2 Connect the Download Cable to the COM port on the PC (running Windows 95 or later) and to the pin strip plug PL4 on the Main Processor PCB. Cable should only be connected/disconnected with unit turned OFF.

3 Switch on the PC and insert the CD into the disk drive on the PC.

4 Run the download program (Downloader.exe).

5 Select the Serial Port and Baud rate as appropriate.

Note

Auto baud rate may fail for 115200 bps on some PC’s. If this happens, manually select 57600 bps.

6 If necessary, edit the path and file name of the hardware BSL file name and

Firmware file name. Make sure that the BSL file name matches.

7 Enter the serial number for the target unit (in the range 1 to 65535).

8 Switch on the IFSD. Switch to Diagnostics Mode.

Note

The audible alarm sounds continuously.

9 Click on the Check File button and check that the firmware file checksum and image checksum are the same.


74 ®

SiPAP

10 Click on the Download button. The download takes approximately 1 minute at

57600 bps. When the download is complete, the audible alarm on the IFSD stops and the unit enters the normal operational mode.

11 Disconnect the Download Cable from plug PL4 on the Main Processor PCB.

12 Refit the case.

13 Carry out a functional check of the IFSD.

Testing

Leak Check

WARNING

Ensure the whistle sounds during gas connection, if not the device may be faulty and should not be used.

1 With the case removed, connect the Medical Air and Oxygen hoses to the IFSD connections on the back panel and set both gas supply pressures to 4 bar.

Set FiO

2

to 60% and NCPAP Pres low flowmeter to >= 3lpm.

Note

The gas failure alarm/bypass warning whistle sounds until the pressures balance.

2 Listen for signs of leaks at pipe connections. Make sure there are no leaks from any valves and connections. Rectify any leaks by replacing tubing as required.

3 Refit the case after leak checking. Functional Check

4 Connect the IFSD to the air and gas supplies and the power cable to a suitable power supply outlet. Connect the patient outlets.

5 Carry out a functional check of NCPAP, BiPhasic and BiPhasic Tr . Calibration

6 Calibrate the unit at 21 % and 100% using the calibration screen or the diagnostic screen.


Service Manual

Chapter 8 – Explanation of Symbols

75

The following symbols may be referenced on the Infant Flow

®

SiPAP driver or in accompanying documentation

Symbol

2.5A/T 250 V

101010

Source / Compliance

Symbol #03-02 IEC 60878

Meaning

Indicates ATTENTION, consult ACCOMPANYING

DOCUMENTS

Symbol #5016 IEC 60417 This symbol indicates a FUSE.

VIASYS Healthcare Symbol

Symbol #5019 IEC 60417

Symbol #01-20 IEC 60878

This symbol indicates an INTERNAL BATTERY

FUSE

Fuse holder and fuse rating

Electrical AC inlet


Symbol #01-14 IEC 30878

The equipment is suitable for alternating current.

Symbol #5031 IEC 60417 This symbol indicates DIRECT CURRENT (DC)

This symbol indicates protective EARTH (ground).


Symbol # 01-24 IEC 60878

This symbol indicates the EQUIPOTENTIAL connection used to connect various parts of the equipment or of a system to the same potential, not necessarily being the earth (ground) potential (e.g., for local bonding).


Symbol #01-01 IEC 60878


Symbol #01-02 IEC 60878

Power ON

Power OFF

Power ON (for part of the equipment)

Power OFF (for part of the equipment)

MDD Directive 93/42/EEC CE Mark

ETL Mark and Registration Number


76 ®

SiPAP

Symbol Source / Compliance Meaning

Operating temperature range of unit

VIASYS Healthcare Symbol

Warning Bell

VIASYS Healthcare Symbol Respiratory Connection and Indicator

Symbol # 5333 IEC 60417

Symbol #02-03 IEC 60878

This symbol indicates TYPE B equipment, which indicates equipment that provides a particular degree of protection against electric shock, particularly with regards to allowable leakage current and reliability of the protective earth connection.

Type BF patient applied part

Year of Manufacture

Unique Batch Number Identifier

Use Before Expiry Date shown

Year-Month

Single Use Only - Do NOT Re-use

Keep Dry

Keep Away from Heat

RS232 Connection


Service Manual

Symbols used on buttons

77

The following symbols are used to label user input areas within the graphical display.

As needed displays in this table are shown separately as Domestic US configuration displays (left-hand column) and International configuration displays (right-hand column).

Symbol Description

High Priority Alarm Active

Medium Priority Alarm Active

Low Priority Alarm Active; medium and high priority alarms are resolved. Alarm does not flash.

No alarms (active or resolved) are present

Active alarm silenced

Adjust BiPhasic rate

Adjust BiPhasic Tr backup rate

Adjust apnea alarm timeout

Adjust low breath rate alarm timeout

Adjust BiPhasic, BiPhasic Tr on time, and NCPAP manual breath function

Decrease / Increase currently selected parameter

Go to mode select screen.

Nasal CPAP mode


78 ®

SiPAP

Nasal CPAP mode with breath rate monitoring

BiPhasic mode

BiPhasic mode with breath rate monitoring

BiPhasic Tr mode with breath rate monitoring

Manual Breath. Single breath cycle at current settings for Ti, NCPAP Pres high and O

2

%. One breath cycle is delivered regardless of button press duration

Toggle between Main Screen and Monitored Parameter

Screen

Go to user calibration mode screen

Confirm

Wait

Completed

Action has failed

Press to un-lock keypad

Warning message. To clear, press any of the three icons.

Note

Provision of labeling in this manual for any function should not be taken as evidence that the function is available. For example parameter R

B

relates to BiPhasic Tr mode, not currently approved for use in the US.


Service Manual

Appendix A- Oxygen Leak Test

79

Oxygen Leak Test

This test will check for leaks within the enclosure.

Test equipment needed:

Calibrated oxygen analyzer

1. Connect the driver to the air and oxygen supplies. Use adaptors to couple to the customer-specified gas block on the driver.

2. Connect the oxygen analyzer sampling tube to the driver by replacing the M6 Pan Screw

(Item 31, 675-002) with an M6 fitting. Before operating the driver, take an initial O2 concentration reading and record on TIR-004. Plug the fitting.

3. Switch the power on. The next step will setup the unit to operate in Bi-phasic mode for any Comprehensive or Plus version.

4. Set the NCPAP (Low Pressure) Flow Meter to about 8 LPM then push the softkey button below the left flowmeter icon (Figure 1).

Figure 1

5. Set the %O2 to 100% then push the softkey button below the blender icon.


80 ®

SiPAP

6. Set the pressure High Flow Meter to about 2 LPM then push its softkey button under the right flowmeter icon.

7. The Respiratory Sensor option is not required, but to finish, select this soft key button.

8. Accept the NCPAP settings by selecting the NCPAP soft key. (%O2 should display 100)

(Figure 2).

Figure 2

9. The next screen varies but select BiPhasic soft key (Figure 3).

675-120

Figure 3


Service Manual

81

10. Accept the default BiPhasic settings by selecting the BiPhasic soft key again (Figure 4).

11. Verify that the measured value doesn’t exceed 23% FiO2. If so, then troubleshoot for an oxygen leak. Check all the fittings and connections and repeat the Oxygen Leak Test

(Figure 5).

Figure 4

675-120

Figure 5


82 ®

SiPAP

Appendix B- Product Configurations

Non-US Configuration Parameters

Parameter

Set Oxygen concentration, %O

2

CPAP flow rate

Bi-level additional flow rate

BiPhasic on time, Ti (inspiration time)

BiPhasic rate, R (respiration rate)

BiPhasic Tr backup rate, Rb (backup respiration rate)

Breath rate timeout

Min

0

0

0.1

1

Max

15

5

3.0 *

120

Accuracy

±

15%

±

15%

±

0.005

±

0.5

Units

%

L/min

L/min seconds pm pm

10 30 ±

1 seconds

* Ti automatically reduces at higher R and Rb rate settings to maintain a minimum off time of 100 milliseconds.

US Configuration Parameters

Parameter

Inspired oxygen fraction, FiO

2

CPAP flow rate

Bi-level additional flow rate

BiPhasic on time, Ti (inspiration time)

BiPhasic rate, R (respiration rate)

Breath rate timeout

Min

0

0

0.1

1

10

Max

15

5

3.0 *

54

30

Accuracy

±

15%

±

15%

±

0.005

±

0.5

±

1

Units

%

L/min

L/min seconds

Pm

Seconds

* Ti automatically reduces at higher R and Rb rate settings to maintain a minimum off time of 1000 milliseconds.

DEFAULT SETTINGS

Inspiration Time

Rate during BiPhasic modes

Back Up Rate During BiPhasic Tr

Apnea Interval

Ti: 0.3 seconds (1.0 sec U.S) +/- 1%.

R: 30 / minute (10 / minute U.S.)

Rb: 10 / minute

T apnea

: 20 seconds (+/- 1%)


Service Manual

Appendix C - Spare Parts

83

To identify a part referenced in this manual, refer to the associated Figure and Item number in Table 8.

Table 8 - Spare Parts

Figure Item Number Part Name Part Number

777244

467464

4 O-ring, 7/16” x 9/16” 465476

15 3 672-024-SA

4

5

O-ring, 1/8” x ¼”

O-ring, ¼” x 3/8”

465474

465457

467352

17 12

13

18

26

2

3

O-ring, 7/16” x 9/16” 465476

Valve/Sensor PCB Assembly 777245

675-213

Pilot Drive Check Valves

Water Trap Filter

675-230

467269

Case Bleed Filtered Restrictor 467542


S117635

467461

467460

675-260

467459

467458

675-307

675-213

B10003

M673051

465476

672-024-SA

465457

465474

467268

690-024

467352

675-230

467542

777245

677-005

675-120

84 ®

SiPAP

Additional Service Parts

Part Number

467472

467468

467471

467469

467470

675-308

467467

467466

675-200

675-201

B09220

Description

KNOB GREY 6MM SHAFT (LOW FLOWMETER)

CAP PLAIN GREY OD29

POINTER GREY OD29

KNOB GREY 3/16 SHAFT (HIGH FLOWMETER)

CAP PLAIN GREY OD15

CASE

FOOT, POLYURETHANE .5OD

WASHER M3 CRINKLE BECU (FOR CASE)

FLOWMETER MK3 HIGH (2-15)

FLOWMETER MK 3 LOW (0-4-5)

FLOWMETER, 0-15 LPM OXYGEN

467463 SPACER ROUND M4X155MM NYLON

WATERTRAP TOOL

O-RING, 7/16" X 9/16"

ASSEMBLY, FILTER

O-RING, 1/4" x 3/8"

O-RING, 1/8" x 1/4"

O-RING, 1-3/16 x 1-5/16

DIAPHRAGM

FUEL CELL

PILOT DRIVE DUCKBILL ASSY

CASE BLEED FILTER RESTRICTOR

VALVE/SENSOR PCB (PACKAGED ASSEMBLY)

PATIENT TRIGGER CONTROLLER PCB

ASSY PCB MAIN PROCESSOR

LCD 5.5 INCH

PCB BACKLIGHT INVERTER LCD

LCD CABLE 12

FUSE TIME LAG 2.5A 250V

POWER INPUT TWIN FUSE

AUX FLOW MOUNTING BLOCK

ASSY BIRD BLENDER

MAINT KIT MCRBLNDR+LOFLO


Service Manual

Part Number

675-300

675-101

677-002

467349

B03895

467464

467269

777235

467455

675-256

S117641

M675A-FRONT

675-312

675-316

675-209

777061

777242-101

777242-102

777242-103

777072-101

777072-102

777072-103

777072-103

675-821

675-819

Description

EXHAUST TUBE 90 DEGREE

OPS MAN INF FLOW SiPAP

TRANSDUCER INTERFACE

ABDOMINAL RESP SENSOR 25PK

VALVE CHECK DCKBL BLACK

FILTER NYLON CONE INL

FILTER ELEMENT (WATERTRAP)

POWER SUPPLY MK3

SWITCH COVER

SWITCH CABLE ASSY

ASSY PCB LED AMBIENT SENSOR

FRONT PANEL ASSY

CONNECTOR PATIENT INLET

MK3 TRIGGER LEUR

O

2

SENSOR CABLE

BLOCK, INLET O

2

/AIR System

SERVICE KIT, Mk3 DRIVER ANNUAL

SERVICE KIT, Mk3 DRIVER 2 YEAR

SERVICE KIT, Mk3 DRIVER 5 YEAR

ASSY O

2

/AIR FITTINGS MARK III DISS

ASSY O

2

AIR FITTINGS MARK III NIST

ASSY O

2

/AIR FIT MARKIII FEMALE DISS

ASSY O

2

AIR FIT MARKIII AIR LIQUIDE

SWR MK3 IFD DOWNLOAD UTILITY

MK3 DOWNLOAD CABLE

85


86 ®

SiPAP


IFSD

LBR

L/min

MAP

BiPhasic

BiPhasic+Apnea

BiPhasic +LBR

BiPhasic Tr

NCPAP

NCPAP+LBR

NCPAP+Apnea

Non-US labeling

PIP

BiPhasic Flow

PRS

Rate

R

B

R

SP s / sec

Service Manual

Glossary

87

Term Meaning

Apnea

Temporary inability to breathe; monitoring of breathing (non-US labeling)

Bpm

Bps cmH

2

O

CPAP

FiO

2

Breaths per minute (applies to each of spontaneous, triggered and mandatory)

Bytes per second

Centimeters of Water (Pressure)

Continuous Positive Airway Pressure

Generator

Fraction of Inspired Oxygen

Patient attachment for delivering CPAP, used with nasal prongs or mask

Infant Flow SiPAP Driver

Low Breath Rate monitoring (US labeling)

Liters per minute

Mean Airway Pressure

BiPhasic Ventilation - CPAP with additional pressure pulses, time-triggered and time-cycled

BiPhasic Ventilation with Apnea monitoring (non-US labeling)

BiPhasic with low breath rate monitoring (US labeling)

Triggered BiPhasic Ventilation - CPAP with additional pressure pulses, patient-triggered and time-cycled

Nasally applied CPAP

NCPAP with Low Breath Rate monitoring (US labeling)

NCPAP with Low Breath Rate monitoring (non-US labeling)

Labeling using non-linguistic symbols in place of English text

Peak Inspired Pressure

Inspiratory Pressure

Product Requirement Specification. A fully controlled baseline document

Mandatory BiPhasic rate (per minute)

Backup ventilator rate (in BiPhasic Tr mode during apnea alarm, per minute; non-US labeling)

Patient’s spontaneous respiratory rate (per minute)

Seconds


88 ®

SiPAP

Term Meaning

Sigh A single pulse of additional gas flow

T apnea

/ T

Ti

LBR

Apnea Interval (non-US labeling) or Low Breath Rate (LBR) monitor alarm time (US-labeling); both in seconds

This mnemonic may also be associated with an alarm icon

Machine breath inspiration time (seconds)

Treatment

US labeling

Application of NCPAP, BiPhasic, BiPhasic Tr, with or without breath monitoring, to the patient

Labeling using English text in place of symbols and/or icons


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