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ALPHA ACTIVE
®
4 SYSTEM
Service Manual
Alpha Active 4 Service Manual
CONTENTS
CHAPTER 1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Numbering and Cross-Referencing in this Manual . . . . . . . . . . . . . . . . . . . . . 1
Warnings, Cautions and Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Alpha Active 4 Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Cycle Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Alpha Active 4 Mattress Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Pneumatic and Electrical Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Controls and Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
On/Off Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Alarm/Mute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Mode Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Auto-firm Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pressure Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Cycle Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Alarms and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Service Indicator/Pump Fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Power Fail Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
CHAPTER 2
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Troubleshooting Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
CHAPTER 3
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Pump Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Pump Maintenance Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Mattress Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Mattress Maintenance Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Alarm Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Power Fail Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Low Pressure Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Service Pump/Fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
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CHAPTER 4
Testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Mattress Visual Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Pump Visual Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Pump Flow, Pressure, and Function Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Flow and Pressure Checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Electrical Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Electrical Safety Checks - Class II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Functional Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Power Fail Alarm Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Low Pressure Alarm Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Service Alarm Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Mattress Inflation Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
End Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
CHAPTER 5
Pump Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Removing the Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Replacing the Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Removing The Bed Hooks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Replacing the Bed Hooks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Removing the Mains/Power Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Installing the Mains/Power Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Removing the Front Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Replacing the Front Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Removing the Display PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Installing the Display PCB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Removing the Compressor Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Installing the Compressor Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Removing the Microswitch Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Installing the Microswitch Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Removing the Rotor/Stator Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Installing the Rotor/Stator Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Removing the Gearbox Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Installing the Gearbox Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Removing the Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Installing the Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Removing the Main PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
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Replacing the Main PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Removing Power Fail Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Replacing Power Fail Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Removing the On/Off Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Installing the On/Off Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Removing the Fuse Holder Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Installing the Fuse Holder Housing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Removing the Mains/Power Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Installing the Mains/Power Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Removing the Terminal Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Installing the Terminal Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
CHAPTER 6
Mattress Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Alpha Active 4 Cell Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Removing The Top Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installing the Top Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Removing Cell Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Installing Cell Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Replacing Manifold Tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Removing CPR Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Installing CPR Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Removing Static Feed Check Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Installing Static Feed Check Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Removing 3-Way Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Installing 3-Way Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
CHAPTER 7
Technical Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Mattress . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Mattress Size Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Cover Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Cleaning Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
CHAPTER 8
Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Pump Assembly Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
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Mattress Assembly Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
CHAPTER 9
Service Contact Details. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
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Alpha Active 4 Service Manual Introduction
CHAPTER 1
INTRODUCTION
1 About This Manual
ArjoHuntleigh strongly recommend that their equipment is only serviced by trained personnel and provide courses for customers who wish to become licensed to service their own equipment.
In no event will ArjoHuntleigh be responsible for any service performed by customers or third parties.
This manual contains information on maintenance, servicing, repair, troubleshooting and testing for the
Alpha Active 4
system, which comprises of a pump and a mattress replacement.
Read and understand this manual before attempting to service or repair the equipment.
Numbering and Cross-Referencing in this Manual
For all chapters in this manual:
• Page, section and paragraph numbering re-start at “1”.
• Figure and table numbering continue from the previous chapter.
• Cross-references, which include a chapter number (and/or chapter title) refer to text in a different chapter. Cross-references which do NOT include any chapter number (or chapter title) refer to text within the same chapter.
Warnings, Cautions and Notes
WARNINGS
given in this manual identify possible hazards in procedures or conditions which, if not correctly followed, could result in death, injury or other serious adverse reactions.
CAUTIONS
given in this manual identify possible hazards in procedures or conditions which, if not correctly followed, could result in equipment failure or damage.
Notes
given in this manual are used to explain or amplify a procedure or condition.
WARNING: BEFORE PERFORMING ANY SERVICE OR MAINTENANCE PROCEDURES,
ENSURE THAT THE EQUIPMENT HAS BEEN ADEQUATELY
DECONTAMINATED.
WARNING: VOLTAGES IN EXCESS OF 30 VOLTS RMS OR 50 VOLTS DC CAN, IN
CERTAIN CIRCUMSTANCES, BE LETHAL. WHEN WORKING ON
EQUIPMENT REQUIRING EXPOSURE TO LIVE, UNPROTECTED
CONDUCTORS WHERE SUCH VOLTAGES ARE PRESENT, EXTREME CARE
MUST BE EXERCISED.
2 Technical Description
The Alpha Active 4 system comprises of a mattress replacement and pump. The product can be used on hospital and domestic beds in both domestic and care environments. The bed base must be suitable for the specified mattress size.
Alpha Active 4 Pump
The Alpha Active 4 pump comprises of a moulded case with non slip feet on the base and integral hanging brackets.
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Introduction Alpha Active 4 Service Manual
The controls are situated on the front of the pump and a sophisticated alarm system differentiates between normal operation and genuine system faults. If an alarm situation is detected an indicator will illuminate on the front of the pump and an audible warning will sound.
Cycle Options
The pump has a user selectable option for operating on either a ten minute, or twenty minute cycle.
10 minutes Cycle
In this alternating mode, the system has a cycle time of 10 minutes. Each full cycle consists of 4.5 minutes inflate, 30 seconds change over, 4.5 minutes deflate and 30 seconds changeover.
20 minutes Cycle
In this alternating mode, the system has a cycle time of 20 minutes. Each full cycle consists of 9.5 minutes inflate, 30 seconds change over, 9.5 minutes deflate and 30 seconds changeover.
Alpha Active 4 Mattress Replacement
Each of the air cells is split into two sections. The base section of each being linked together to provide a static section which provides protection from the effects of bottoming out.
The Alpha Active 4 cover is water resistant and vapour permeable to enhance patient comfort whilst protecting the cells from ingress of contaminants. The cover is simple to clean in situ, but may easily be removed for laundering, preventing cross contamination.
In the event of cardiac arrest the mattress replacement can be rapidly deflated to allow cardiac resuscitation procedure (CPR) to be performed.
Part No.
648322
648324
648326
Table 1 - Available Mattress Sizes
Description
ALPHA ACTIVE 4 MR 90
ALPHA ACTIVE 4 MR 85
ALPHA ACTIVE 4 MR 85 PU
Spare
Cover
648437
648461
648461
Length mm
Width mm
Height mm
1950 (77") 900(35") 200 (8")
1950 (77") 850(33") 200 (8")
1950 (77") 850(33") 200 (8")
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Alpha Active 4 Service Manual
3 Pneumatic and Electrical Diagrams
Introduction
Figure 1 - Pneumatic System Diagram
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Introduction Alpha Active 4 Service Manual
*Connectors J1, J2 and J7 must be connected to their relevant terminals on the Main PCB.
Figure 2 - Electrical Diagram
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Issue 1
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Alpha Active 4 Service Manual Introduction
4 Front Panel
4.1
Below is a diagram of the Alpha Active 4 pump front panel. For more detail on the function of each button, see below.
Cycle Time Alarm Mute Mode Selector Auto-firm Mode
Comfort Control Alarms
5 Controls and Indicators
On/Off Switch
Located on the right side of the pump unit, the On/Off switch will illuminate green when the pump is on.
Alarm/Mute
During an alarm condition the sound of the alarm can be muted by pressing this button.
The yellow indicator will then flash intermittently but the alarm will be muted.
Mode Select
The mode selector allows the mode of operation to be selected.
Two modes of operation are available, Alternating or Static (non-alternating) .
The indicator next to the respective icon indicates the currently selected mode.
Auto-firm Mode
Selects the Auto-firm, non-alternating mode. The orange indicator will illuminate when the pump is in this mode. Autofirm operates for 30 minutes.
Pressure Control
Two buttons (+ and -) are used to set the pressure inside the mattress replacement and therefore the amount of support the patient receives.
The pressure setting is indicated by the green indicator above the selected setting.
Cycle Time
A single button allows the cycle time to be selected for the most appropriate patient therapy.
The cycle time setting is indicated by the green indicator above the selected setting.
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6 Alarms and Indicators
Low Pressure Indicator
The red Low Pressure indicator is illuminated whenever the pump detects low pressure within the mattress replacement. An audible alarm will sound unless cancelled by the mute button.
The indicator will extinguish once normal pressure is reached. Refer To
“Troubleshooting” on page 14 for possible causes of Low Pressure.
Service Indicator/Pump Fault
The yellow Service/pump fault indicator will illuminate and remain on if the pump has detected an internal fault. An audible alarm will sound unless cancelled by the mute button.
Power Fail Indicator
The red Power Fail indicator will illuminate when a mains power failure has been detected. An audible alarm will sound until power is restored or the pump is switched off using the on/off switch.
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Alpha Active 4 Service Manual Troubleshooting
CHAPTER 2
TROUBLESHOOTING
1 Troubleshooting Table
The following table contains fault symptoms, their possible causes and suggests steps to rectify the problem. These may occur during initial installation and power up.
Table 2 - Troubleshooting Table
Symptom
Low Pressure Alarm
(Mattress)
Low Pressure Alarm
(Pump)
Power Fail Alarm
Service Alarm
Possible Cause
Tube-set not connected securely
CPR not fully closed.
Cell Leak.
Damaged/Disconnected tube.
Faulty Compressor
Blocked Air Filter
Power has been removed from the pump.
Blown Fuse.
Pump has detected an internal fault.
Faulty Microswitch
Faulty Gearbox
Action
Check the tube-set connector and ensure it is securely fitted to the pump.
Close CPR Unit
Trace and replace faulty part.
Check/Replace.
Check/Replace.
(Chapter 5, Page 13, Section 12).
Check/Replace.
(Chapter 5, Page 3, Section 2).
Re-apply power or switch the pump off.
Check/Replace.
(Chapter 5, Page 7, Section 6).
Trace and replace faulty part.
Test and Replace if required.
(Chapter 5, Page 15, Section 14).
Check/Replace if required.
(Chapter 5, Page 15, Section 18).
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Troubleshooting Alpha Active 4 Service Manual
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Alpha Active 4 Service Manual Maintenance
CHAPTER 3
MAINTENANCE
WARNING: BEFORE DISMANTLING THE PUMP, ENSURE UNIT HAS BEEN ISOLATED
FROM THE POWER SUPPLY BY REMOVING THE CORD PLUG FROM THE
WALL OUTLET.
WARNING: A POTENTIAL ELECTRICAL SHOCK HAZARD EXISTS WHEN THE BACK
COVER IS REMOVED, EVEN WITH THE PUMP SWITCHED OFF.
CAUTION: Static Sensitive Devices
This pump should only be opened by personnel trained in ESD methods and with appropriate equipment and anti-static protection.
1 Pump Service
A pump should be serviced every 12 months. To carry out a service on the pump, do the following:
1.1
Carry out the Pump Maintenance Checks (Refer to Page 1, Section 2).
1.2
Replace the air inlet filter.
2 Pump Maintenance Checks
If any parts are found to be damaged they must be replaced in accordance with Pump Repair.
2.1
Visually inspect the following for damage, wear and potential faults:
• Base of Pump
• Inlet Filter
• Compressor
• Electrical Connections
• Tubing
• Power Switch
• Wiring
• Air flow
• Outlet Tubes
Check base is free from debris.
Check condition.
Check compressor seating.
Check connections are secure and completely insulated.
Check completely pushed on and are kink free.
Check switch illuminates when ON.
Check wiring is intact.
Check electrical insulation are not damaged.
Check air flow is alternating.
Check tubes are secure.
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Maintenance Alpha Active 4 Service Manual
3 Mattress Service
To carry out a service on the mattress, do the following:
3.1
Carry out the Mattress Maintenance Checks (Refer to Page 2, Section 4).
4 Mattress Maintenance Checks
If any parts are found to be damaged they must be replaced in accordance with Mattress Repair.
4.1
Visually inspect the following for damage, wear and potential faults:
• Base and Top Cover
• Base/Top cover Zip
• Fixing Straps
• Connectors
• Tubing
• Cells
• Manifold
• Press Studs
• CPR
• Tubeset Assembly
Check for tears, staining, clarity of printed labels.
Check the zip runs freely and condition of zip teeth.
Check condition and security.
Check for damage and security.
Check for security and ensure no kinks or twists.
Check for damage.
Check for damage and security.
Check condition.
Check operation of Fast Deflate mechanism.
Check for damage and security of connection.
4.2
Carry out a function test on the pump/mattress system in accordance with Chapter 4.
5 Alarm Functions
Power Fail Alarm
Switch pump off at mains/power socket, leaving the pump switched on. The red power fail indicator will illuminate when a mains power failure has been detected. An audible alarm will sound until power is resumed or the pump is switched off using the on/off button.
Low Pressure Indicator
5.1
Block the air outlets on the pump.
5.2
Switch the pump on and allow Low Pressure indicator to extinguish.
5.3
Remove the blockage from the air outlets. The red Low Pressure indicator will illuminate and and audible alarm will sound.
Service Pump/Fault
The yellow service/pump fault indicator will illuminate and remain on if the pump has detected an internal fault. Refer to Troubleshooting to help diagnose the fault, refer to Chapter 2.
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Alpha Active 4 Service Manual
CHAPTER 4
TESTING
CAUTION: Electrostatic discharge can seriously damage the Main PCB. Prior to replacing it, adequate earthing precautions must be taken.
Note: In all cases the pump and mattress must be tested together as a system.
Testing
1 Mattress Visual Inspection
Ensure that the mattress is checked as follows:
1.1
All studs must be secure and all inlet connectors fitted securely.
1.2
The mattress contains 19 cells which are studded to both sides of the mattress. The bottom of each cell connected to the static feed, the top half connected to the alternating feed (the head section cells top half are connected to the static feed). Ensure that the cells are retained centrally by the loops in the base cover.
2 Pump Visual Inspection
2.1
Ensure there are no cracks or marks on the pump case. Ensure the labels are intact and readable. Check there are no marks or fractures in the Pump outlet module.
2.2
Ensure the mains lead is fully secure and there are no cuts or damage to the cable.
3 Pump Flow, Pressure, and Function Test
You will also need:
• A sphygmomanometer or pressure gauge (0-160mmHg)
• A flow meter (0-10 litres/minute)
To carry out a system functional test complete the following procedures:
• Flow and Pressure Checks
• Electrical Testing
• Functional Test
The following procedures must be carried out after a service or major repair of the pump. To test/ calibrate pump correctly, the following equipment (or equivalent) is required:
Note: All test equipment must be calibrated to national or international standards.
Flow and Pressure Checks
3.1
Set the pressure control on the pump to maximum (200kg) setting.
3.2
Connect a dual flow pressure meter, via a valve, to whichever outlet is working.
3.3
Open the valve fully. The free flow rate should not be less than specified in the table below.
Air Flow @
20mmHg
6 litres/min
Air Flow @
50mmHg
3 litres/min
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Chap 4
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Testing Alpha Active 4 Service Manual
3.4
Close the valve and operate the pressure control on the pump from minimum (20kg) to maximum (200kg) setting. The pressure indicated on the gauge (in mmHg) should be as specified in the table below.
Minimum Pressure
@ 20kg
25mmHg ± 5mmHg
Maximum Pressure
@ 200kg
75mmHg ± 5mmHg
3.5
Repeat for the remaining ports.
4 Electrical Testing
To test and calibrate the pump unit correctly, the following equipment is required:
Item
3
4
1
2
Test Equipment
Insulation Resistance Tester (Megger), 500 Vdc
Portable Appliance Tester
Multimeter / Continuity Tester
Dielectric strength tester (Flash tester) 3.0 kVac with current limit (CHECK 4.0kVac??)
Electrical Safety Checks - Class II
There are several electrical safety checks that must be carried out after breakdown repairs, rental rechecks and servicing. Where alternatives are given, the test will depend upon the available equipment.
The tests are as follows:
• Insulation Resistance Test (Megger Test) or
• Dielectric Strength (Flash Test)
Insulation Resistance Test
This test checks the integrity of the appliance’s insulation.
For all appliances, this test is applied between the connected Live and Neutral wires and the appliance’s metal compressor assembly box.
Specification:
500 Vdc is applied to the insulation and the measured resistance must be greater than
2MΩ. This test can be conducted by using a Portable Appliiance Tester. Also check the continuity of the mains cable.
Dielectric Strength Test (Flash Test)
This test shows the response of the insulation to high ac-voltage stress, to the efforts of the capacitive current and gives an early warning of any electrical problems developing in the appliance.
WARNING: DANGER OF ELECTRIC SHOCK. DO NOT TOUCH ANY EXPOSED PARTS
WHILE CONDUCTING THIS TEST. DO NOT TOUCH ANY PART OF YOUR
BODY WITH THE CONTACTS OF THE PROBES.
WARNING: THIS EQUIPMENT SHOULD NOT BE USED IF YOU HAVE A HEARING AID
OR PACEMAKER FITTED, DUE TO THE POSSIBILITY OF
ELECTROMAGNETIC DISTURBANCE.
Specification:
4.0 kVac is applied between the connected Live and Neutral wires and the foil applied to the device's enclosure. No breakdown should occur.
Chap 4
Page 2 SER0018
Issue 1
April 2010
Alpha Active 4 Service Manual Testing
Note: The voltage levels used for this test, may stress and weaken the insulation. This test is therefore not recommended as a routine test. It should only be used after a major assembly/disassembly has been carried out.
Functional Test
Tests must be carried out using a 220-240V 50Hz power supply.
Test Setup and Initial Switch On
4.1
Set the pressure control to minimum (20kg) and ensure that all three outlet ports are open to atmosphere.
4.2
Connect the mains/power cable to a suitable power socket outlet and then set the on/off switch to ‘on’. Verify that the green indicator in the switch is illuminated. Verify that the red LOW
PRESSURE
indicator is illuminated. Use the fingers or flowtron stopper (part number CAS077) to close all three ports and verify that the LOW PRESSURE indicator goes off.
Power Fail Alarm Check
4.3
With the pump operating, disconnect the power supply at the power socket outlet. Verify that, within 5 seconds, the red POWER FAIL indicator flashes in conjunction with an audible alarm.
Reconnect the power supply. Verify the POWER FAIL indicator is extinguished.
Low Pressure Alarm Check
4.4
Close all three ports. Operate the on/off switch to ‘on’. verify that, after 10 seconds, the SOLID
LOW PRESSURE
indicator is extinguished.
4.5
Open all ports to atmosphere. Verify that, after 10 seconds, the red LOW PRESSURE indicator flashes in conjunction with the audible alarm.
Service Alarm Check
To check the operation of the Service alarm it is necessary to have the case halves open.
WARNING: ENSURE PUMP IS DISCONNECTED FROM THE POWER SUPPLY.
4.6
Open the case halves (Refer to Chapter 5, Page 9, Section 8).
4.7
Disconnect the micro switch from the PCB connector, J4 (Chapter 1, Page 4, Section 2).
4.8
Close the case halves.
4.9
Connect the mains/power cable to a suitable power socket outlet and close all three ports.
Operate the on/off switch to ‘on’.
4.10
The service indicator should operate within 10 seconds.
4.11
Operate the on/off switch to ‘off’ position, disconnect the power supply at the power socket outlet.
4.12
Open the case halves and reconnect the micro switch to the PCB connector, J4.
(Chapter 1, Page 4, Section 2).
4.13
Close the case halves (Refer to Chapter 5, Page 9, Section 8).
4.14
Connect the mains/power cable to a suitable power socket outlet and close both ports. Operate the on/off switch to ‘on’.
4.15
The service indicator should be extinguished.
5 Mattress Inflation Test
5.1
Test the complete system to ensure correct operation.
Issue 1
April 2010 SER0018
Chap 4
Page 3
Testing Alpha Active 4 Service Manual
6 End Setting
6.1
Disconnect the mattress from the pump and coil up the mains cable. Expel all the air from the mattress. The system is now ready to be packed.
Chap 4
Page 4 SER0018
Issue 1
April 2010
Alpha Active 4 Service Manual Pump Repair
CHAPTER 5
PUMP REPAIR
WARNING: BEFORE DISMANTLING THE PUMP, ENSURE UNIT HAS BEEN ISOLATED
FROM THE POWER SUPPLY BY REMOVING THE CORD PLUG FROM THE
WALL OUTLET.
1 General
This chapter details repair procedures for the Alpha Active 4 Pump Unit. All repairs should be carried out by ArjoHuntleigh approved service personnel.
If any cable ties are cut so as to enable removal of parts, replacement ties must be fitted as part of the install procedure.
Table 3 defines the test requirements which must be carried out following certain repairs:
To carry out a flow, pressure and function test on the pump refer to Chapter 4, Page 1, Section 3.
To carry out the electrical tests on the pump refer to Chapter 4, Page 2, Section 4.
Table 3 - Repair to Testing Requirements
Components / Assemblies
Front Casing
Rear Casing
Display PCB
Main PCB
Bed Hooks
Compressor
Rotor/Stator Assembly
Mains Lead
Mains Switch
Terminal Block
Transformer
Air Filter
Oulet Connector
Function Test
No
Yes
Yes
No
Yes
No
Yes
Yes
No
No
No
Yes
Yes
Electrical Safety Tests
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
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Page 1
Pump Repair
10
Alpha Active 4 Service Manual
20
Item
10
20
-
Figure 3 - Replace the Air Filter
Part Number
648402
648405
648404
Table 4 - Replace the Air Filter Parts List
Description
Rear Case Alpha Active 3 and 4
Air Filter Cover
Air Filter Replacement
Qty
1
1
1
Chap 5
Page 2 SER0018
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April 2010
Alpha Active 4 Service Manual Pump Repair
2 Removing the Air Filter
2.1
Place the pump unit face down on a clean, flat surface.
2.2
Press firmly on the retaining clip of the air filter housing, and lift the Air Filter housing
(Fig 3, Item 20) away.
2.3
Carefully lever out the the Air Filter from the housing (Fig 3, Item 20).
3 Replacing the Air Filter
3.1
Place the new air filter in the air filter housing (Fig 3, Item 20).
3.2
Place the air filter housing (Fig 3, Item 20) into the rear case (Fig 3, Item 10) by ensuring that the two securing lugs align with the holes provided.
3.3
Carefully press down on the air filter housing retaining clip and ensure it the housing has been securely fitted into the rear case (you should hear a ‘CLICK’ confirming proper fitment).
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April 2010 SER0018
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Pump Repair
10
30
Alpha Active 4 Service Manual
20
Item
10
20
30
Figure 4 - Replacement of Bed Hooks
Part Number
648402
REF
648403
Table 5 - Bed Hook Parts List
Description
Rear Case Alpha Active 3 and 4
Bed Hook Cover
Bed Hook Alpha Active 3 and 4
Qty
1
2
2
Chap 5
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April 2010
Alpha Active 4 Service Manual Pump Repair
4 Removing The Bed Hooks
4.1
Place the pump unit face down on a clean, flat surface.
4.2
Ensure the Bed Hook is folded against the pump.
4.3
Using a small flat tool, remove the Bed Hook Cover by inserting the tool into the aperture on the top edge of the cover.
4.4
Remove the two securing screws from the Bed Hook Bracket.
Note: You may be required to gently lever the bracket away from the pump in order to fully remove it. If so, do this via the top edge of the recess, and ensure you place a free hand over the bracket to prevent its loss.
4.5
Rotate the hook 90° and remove from the pump casing.
4.6
Repeat Para 4.2 to Para 4.5 for the other Hook.
5 Replacing the Bed Hooks
5.1
Firmly insert the new Hook (Fig 4, Item 30) at 90° to the pump case, into the corresponding recess.
5.2
Whilst applying pressure to the hook, rotate it so it is folded in against the pump.
5.3
Position the Bed Hook Bracket and fit the two retaining screws.
5.4
To refit the Bed Hook Cover.
5.4.1
Clean all previous glue residue off from both the cover and the recess lip.
5.4.2
Apply an instant adhesive (Loctite 460 or similar) to the lip within the recess of the pump case.
5.4.3
Firmly press the Bed Hook cover into position.
5.5
Repeat for the other Hook.
5.6
Assemble the case (Refer to Page 9, Section 9).
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Page 5
Pump Repair Alpha Active 4 Service Manual
10
Item
10
20
20
Figure 5 - Position of Mains/Power Fuses
Part Number
648402
MIS106
Table 6 - Mains/Power Fuses Parts List
Description
Rear Case
Mains Fuse (1A Time Lag T Fuse)
Qty
1
2
Chap 5
Page 6 SER0018
Issue 1
April 2010
Alpha Active 4 Service Manual Pump Repair
6 Removing the Mains/Power Fuses
WARNING: BEFORE DISMANTLING THE PUMP, ENSURE UNIT HAS BEEN ISOLATED
FROM THE POWER SUPPLY BY REMOVING THE CORD PLUG FROM THE
WALL OUTLET.
6.1
Place the pump unit face down on a clean, flat surface.
6.2
Using a flatbladed screwdriver, remove the fuse holder from the back of the rear case by unscrewing anti-clockwise.
6.3
Pull the blown fuse from its holder.
7 Installing the Mains/Power Fuses
7.1
Firmly push the new fuse into its holder.
7.2
Place the fuse holder into position on the back of the rear case.
7.3
Using a flatbladed screwdriver tighten clockwise until tight.
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Pump Repair
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Alpha Active 4 Service Manual
30
60
20
30
10
40
30
50
Item
10
20
30
40
50
60
Figure 6 - Front Case Removal/Fitment
Part Number
648401
648402
REF
648420
REF
648423
Table 7 - Case Assembly
Description
Front Case Alpha Active 4
Rear Case Alpha Active 3 and 4
Screw (M3x15mm Pozi Pan Head, PT Type)
Display PCB Alpha Active 4
Main PCB - Display PCB Ribbon Connector
Hose Connector - Alpha Active 4
Chap 5
Page 8 SER0018
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5
1
1
1
1
1
Issue 1
April 2010
Alpha Active 4 Service Manual Pump Repair
8 Removing the Front Case
WARNING: BEFORE DISMANTLING THE PUMP, ENSURE UNIT HAS BEEN ISOLATED
FROM THE POWER SUPPLY BY REMOVING THE CORD PLUG FROM THE
WALL OUTLET.
8.1
Place the pump unit face down on a clean, flat surface.
8.2
Unscrew the five screws (Fig 6, Item 30).
8.3
Carefully turn the pump over, collecting the five screws (Fig 6, Item 30), keeping them in a safe place.
8.4
Carefully pull apart the two cases, ensuring the compressor remains in the rear case.
Note: The front case contains a PCB connected via a ribbon to the main PCB in the rear case.
8.5
Within the front case, on the Display PCB pull apart the two ribbon securing clips.
8.6
Remove the ribbon from the Display PCB.
8.7
The front case is now removed.
9 Replacing the Front Case
9.1
Place the pump rear case (Fig 6, Item 20) on a flat surface with the inner components facing upward.
9.2
Plug the Main PCB - Display PCB ribbon cable into the rear of the display PCB ribbon connector
(Fig 6, Item 50) within the front case.
9.3
Using thumbs carefully push down on the ribbon connector until the two securing clips ‘click’ into place over it.
9.4
Place the front case (Fig 6, Item 10) on top of the rear case (Fig 6, Item 20) ensuring that no wires are trapped.
9.5
Carefully turn the pump over so the front is face down. Install the five screws (Fig 6, Item 30) to the rear case and tighten.
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Pump Repair
30
20
Alpha Active 4 Service Manual
10
Figure 7 - Replacing Display PCB
Item
10
20
30
Part Number
648420
REF
REF
Table 8 - Display PCB Parts List
Description
Display PCB
Screw (M3x8mm Pozi Pan Head, PT Type)
Location Lug
Qty
1
8
-
Chap 5
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Alpha Active 4 Service Manual
10 Removing the Display PCB
10.1
Remove the Front case (Refer to Page 9, Section 8).
10.2
Remove the eight fixing screws (Fig 7, Item 20) from the display PCB.
10.3
Carefully lift the Display PCB (Fig 7, Item 10) out of the front casing.
Pump Repair
11 Installing the Display PCB
11.1
Insert the base of the Display PCB (Fig 7, Item 10) into position within the front casing, guiding the square holes on the PCB to the location lugs (Fig 7, Item 30) within the front case.
11.2
Refit the eight fixing screws (Fig 7, Item 20).
11.3
Replace the Front case (Refer to Page 9, Section 9).
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Pump Repair Alpha Active 4 Service Manual
10
20
30
50
40
Item
10
20
30
40
50
Figure 8 - Compressor Fitment/Removal
Part Number
648408
REF
REF
648425
REF
Table 9 - Compressor Assembly
Description
Compressor
Compressor Outlet
Compressor Mounting Plate
Terminal Block
T-Piece Connector
Chap 5
Page 12 SER0018
Qty
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1
1
-
1
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Alpha Active 4 Service Manual Pump Repair
12 Removing the Compressor Assembly
12.1
Remove the front case (Refer to Page 9, Section 8).
12.2
Remove the two red wires from the Terminal Block terminals T5 and T6.
12.3
Pull these wires free from other wiring within the rear case, noting the routing of the wires.
12.4
Remove the Compessor air outlet feed (Fig 8, Item 20) from the compressor (Fig 8, Item 10).
12.5
Lift the compressor assembly (Fig 8, Item 10) away.
13 Installing the Compressor Assembly
13.1
Place the compressor assembly into the rear case, ensuring the mounting plate (Fig 8, Item 30) sits in its moulding within the case.
13.2
Replace the compressor air feed (Fig 8, Item 20) to the new compressor (Fig 8, Item 10).
13.3
Route the compressor wires as required and connect to the appropriate terminals on the
Terminal Block.
13.4
Reassemble the case (Refer to Page 9, Section 9).
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Pump Repair Alpha Active 4 Service Manual
40
D
B
C
A
Item
10
20
30
40
50
60
10
60
50
Microswitch omitted for clairity
Figure 9 - Removing the Rotor/Stator Assembly
30
Part Number
648422
REF
REF
648427
648417
REF
Table 10 - Rotor/Stator Assembly
Description
Rotor/Stator Alpha Active 4
Screw (M3x10mm Pozi Pan Head, PT Type)
Rotor/Stator Spade Connectors
Gearbox Assembly
Microswitch
Microswitch Securing Screw
(M3x15mm Pozi Pan Head, PT Type)
20
Qty
-
1
1
2
1
2
Chap 5
Page 14 SER0018
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April 2010
Alpha Active 4 Service Manual Pump Repair
14 Removing the Microswitch Assembly
14.1
Remove the front case (Refer to Page 9, Section 8).
14.2
Remove the two spade connectors from the Rotor/Stator microswitch, noting wires/connections.
14.3
Remove the two securing screws (Fig 9, Item 60) that hold the microswitch in place.
14.4
You can now remove the Microswtich (Fig 9, Item 50).
15 Installing the Microswitch Assembly
15.1
Place the microswitch (Fig 9, Item 50) into position and secure with the two securing screws.
15.2
Re-connect the two spade connectors to the microswitch.
15.3
Re-fit the front case (Refer to Page 9, Section 9).
16 Removing the Rotor/Stator Assembly
16.1
Remove the front case (Refer to Page 9, Section 8).
16.2
Remove the four tubing connections to the Rotor/Stator, noting their connection locations.
16.3
Remove the two spade connectors from the Rotor/Stator microswitch, noting wires/connections.
16.4
Push down on the Rotor/Stator assembly Fig 9, Item 10, and remove the securing pin (D).
16.5
Remove the complete rotor/stator assembly (C,B,A) from the top of the gearbox.
17 Installing the Rotor/Stator Assembly
17.1
Refering to Figure 9:
17.1.1
Place the spring (A) onto the gearbox spindle as shown.
17.1.2
Place the bottom of the Rotor/Stator (B) onto the gearbox spindle.
17.1.3
Pushing down on the bottom section of the Rotor/Stator, place the top half of the Rotor/
Stator (C) onto the gearbox spindle AND while applying pressure, slide the securing pin
(D) through the spindle as shown.
17.1.4
Ensure the securing pin (D) is seated within the recess on the top of the rotor/stator assembly.
17.2
Re-connect the two spade connectors to the Rotor/Stator microswitch.
17.3
Connect the four tubing connections to the Rotor/Stator.
17.4
Re-fit the front case (Refer to Page 9, Section 9).
18 Removing the Gearbox Assembly
18.1
Remove the rotor/stator assembly (Refer to Page 15, Section 16).
18.2
Remove the two securing screws (Fig 9, Item 20).
18.3
Remove the Gearbox-PCB connector from J3 on the Main PCB.
18.4
You can now remove the Gearbox Assembly (Fig 9, Item 40).
19 Installing the Gearbox Assembly
19.1
Place Gearbox assembly (Fig 9, Item 40) into position in the rear case, ensuring the wires exit the Gearbox in the direction of the compressor.
19.2
Secure with the two securing screws (Fig 9, Item 20).
19.3
Refer to “Installing the Rotor/Stator Assembly”.
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April 2010 SER0018
Chap 5
Page 15
Pump Repair Alpha Active 4 Service Manual
20
10
Item
10
20
Figure 10 - Removing the Transformer
Part Number
648429
REF
Table 11 - Transformer
Description
Transformer Alpha Active 4
Screw (M3x10mm Pozi Pan Head, PT Type)
Qty
1
2
Chap 5
Page 16 SER0018
Issue 1
April 2010
Alpha Active 4 Service Manual Pump Repair
20 Removing the Transformer
20.1
Remove the front case (Refer to Page 9, Section 8).
20.2
On the main PCB, disconnect the transformer connection from J1.
20.3
Remove the red wires from Terminals T3 and T4 on the Terminal Block.
Note: Ensure the capacitor remains connected to Terminals T3 and T4.
20.4
Remove the two securing screws (Fig 10, Item 20) that hold the transformer (Fig 10, Item 10) in place.
20.5
You can now remove the transformer (Fig 10, Item 10).
21 Installing the Transformer
21.1
Place the transformer (Fig 10, Item 10) into position in the rear case, ensuring it is correctly seated and orientation is so that the Main PCB wires are in the direction of the PCB.
21.2
Fit the two securing screws (Fig 10, Item 20).
21.3
Re-connect the red wires to Terminals T3 and T4 on the Terminal Block.
Note: Ensure red wires run under all tubing, and that the capacitor remains connected to
Terminals T3 and T4.
21.4
Re-connect the transformer connection to the Main PCB J1.
21.5
Re-fit the front case (Refer to Page 9, Section 9).
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Page 17
Pump Repair
10
20
30
A
Alpha Active 4 Service Manual
Item
10
20
30
Figure 11 - Removing the Main PCB
Part Number
648421
REF
REF
Table 12 - Main PCB Parts List
Description
Main PCB Alpha Active 4
Stator To Pressure Switch Tubing
Screw (M3x8mm Pozi Pan Head, PT Type)
Qty
1
1
4
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Page 18 SER0018
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Alpha Active 4 Service Manual Pump Repair
22 Removing the Main PCB
22.1
Remove the front case (Refer to Page 9, Section 8).
22.2
On the Main PCB (Fig 11, Item 10), pull apart the two ribbon securing clips, at connector ‘A’.
22.3
Remove the ribbon cable from the Main PCB (Fig 11, Item 10).
22.4
On the main PCB, disconnect:
22.4.1
The transformer connection from J1.
22.4.2
The Rotor/Stator microswitch cable from J4.
22.4.3
The Rotor/Stator cable from J3.
22.4.4
The twin live connector from J7.
22.4.5
The 4-way connector from J2.
22.4.6
The Rotor/Stator tubing (Fig 11, Item 20) from U3.
22.5
Remove the four corner fixing screws (Fig 11, Item 30) and lift the Main PCB (Fig 11, Item 10) out of the pump case.
23 Replacing the Main PCB
23.1
Place the Main PCB with its component side facing upward, into position in the rear case, ensuring alignment of the four corner fixing holes in Main PCB (Fig 11, Item 10) with the pillars in the rear case. Fit the four retaining screws (Fig 11, Item 30).
23.2
Connect to the Main PCB:
23.2.1
The Rotor/Stator tubing to U3.
23.2.2
The 4-way connector to J2.
23.2.3
The twin live connector to J7.
23.2.4
The Rotor/Stator cable to J3.
23.2.5
The Rotor/Stator microswitch cable to J4.
23.2.6
The transformer connection to J1.
23.3
Plug the ribbon cable into the connector on the Main PCB within the rear case.
Note: If Main PCB - Display PCB ribbon cable has been disconnected from both the PCB’s, ensure upon re-connecting that the location keys are in correct orientation.
23.4
Using thumbs, carefully push down on the ribbon connector until the two securing clips ‘click’ into place over it.
23.5
Re-fit the front case (Refer to Page 9, Section 9).
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Page 19
Pump Repair
10
Alpha Active 4 Service Manual
20
30
Item
10
20
30
Figure 12 - Removing the Power Fail Battery
Part Number
648421
648428
BP196
Table 13 - Power Fail Battery Parts List
Main PCB Alpha Active 4
Battery
Cable Tie
Description Qty
1
1
1
Chap 5
Page 20 SER0018
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April 2010
Alpha Active 4 Service Manual
24 Removing Power Fail Battery
24.1
Remove the front case (Refer to Page 9, Section 8).
24.2
Remove the Main PCB (Refer to Page 19, Section 22).
24.3
De-solder the battery connections from the PCB.
Pump Repair
25 Replacing Power Fail Battery
25.1
Place the battery (Fig 12, Item 20) onto the PCB (Fig 12, Item 10) ensuring the correct polarity.
25.2
Solder both the positive and negative connections.
25.3
Secure battery to PCB using tie wrap (Fig 12, Item 30).
25.4
Replace the PCB (Refer to Page 19, Section 23).
25.5
Re-fit the front case (Refer to Page 9, Section 9).
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Pump Repair Alpha Active 4 Service Manual
10
Rear of On/Off Switch
Item
10
Figure 13 - Removing the On/Off Switch
Part Number
648407
Table 14 - On/Off Switch Parts
Description
Mains (On/Off) Switch
Qty
1
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Alpha Active 4 Service Manual Pump Repair
26 Removing the On/Off Switch
26.1
Remove the front case (Refer to Page 9, Section 8).
26.2
Lift the On/Off switch (Fig 13, Item 10) away from the rear pump case.
26.3
Remove the two live spade connectors from the back of the On/Off Switch (terminals 1 and 1A).
26.4
Remove the two neutral spade connectors from the back of the On/Off Switch (terminals 2 and
2A).
26.5
You can now remove the On/Off Switch (Fig 13, Item 10).
27 Installing the On/Off Switch
27.1
Re-connect the live spade connector that runs from the Main PCB to terminal 1
(Refer to Figure 13)on the rear of the On/Off Switch.
27.2
Re-connect the live spade connector that runs from a fuse holder to terminal 1a
(Refer to Figure 13) on the rear of the On/Off Switch.
27.3
Re-connect the neutral spade connector that runs from the Terminal block and Main PCB to spade terminal 2 (Refer to Figure 13) on the rear of the On/Off Switch.
27.4
Re-connect the neutral spade connector that runs from a fuse holder to spade terminal 2a
(Refer to Figure 13) on the rear of the On/Off Switch.
27.5
Place the On/Off Switch (Fig 13, Item 10) into position in the rear case, ensuring the two live wires are facing outwards from the case.
27.6
Re-fit the front case (Refer to Page 9, Section 9).
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Pump Repair Alpha Active 4 Service Manual
10
Item
10
Figure 14 - Removing the Fuse Holder Housings
Part Number
648406
Table 15 - Fuse Holder Housings
Description
Fuse Holder
Qty
2
Chap 5
Page 24 SER0018
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Alpha Active 4 Service Manual Pump Repair
28 Removing the Fuse Holder Housing
28.1
Remove the front case (Refer to Page 9, Section 8).
28.2
For the right Fuse Holder Housing:
28.2.1
Remove the live Mains/Power Cable spade connector from the side of the fuse holder.
28.2.2
Remove the live On/Off Switch spade connector from the top of the fuse holder.
28.2.3
Unscrew nut and remove the Fuse Holder from the pump.
28.3
For the left Fuse Holder Housing:
28.3.4
Remove the neutral Mains/Power Cable spade connector from the side of the fuse holder.
28.3.5
Remove the neutral On/Off Switch spade connector from the top of the fuse holder.
28.3.6
Unscrew nut and remove the Fuse Holder from the pump.
29 Installing the Fuse Holder Housing
29.1
For the right Fuse Holder Housing:
29.1.1
Secure the Fuse Holder to the pump.
29.1.2
Connect the live On/Off Switch spade connector to the top of the fuse holder.
29.1.3
Connect the live Mains/Power Cable spade connector to the side of the fuse holder.
29.2
For the left Fuse Holder Housing:
29.2.4
Secure the Fuse Holder to the pump.
29.2.5
Connect the neutral On/Off Switch spade connector to the top of the fuse holder.
29.2.6
Connect the neutral Mains/Power Cable spade connector to the side of the fuse holder.
29.3
Re-fit the front case (Refer to Page 9, Section 9).
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20
30
Figure 15 - Removing the Mains/Power Cable
Part Number
648410
648447
648449
Table 16 - Mains/Power Cable
Description
Mains Cable Euro - Alpha Active 4
Ferrite 28mm
Ferrite 12mm
30
Qty
1
1
1
Chap 5
Page 26 SER0018
Issue 1
April 2010
Alpha Active 4 Service Manual
30 Removing the Mains/Power Cable
30.1
Remove the front case (Refer to Page 9, Section 8).
30.2
Remove the live spade connection from the side of the right fuse holder.
30.3
Remove the neutral spade connection from the side of the left fuse holder.
30.4
Remove the two ferrite beads from the Mains/Power Cable.
30.5
You can now remove the Mains/Power Cable.
31 Installing the Mains/Power Cable
31.1
Place the Mains/Power Cable in position in the side of the rear case.
31.2
Re-connect the neutral spade connector to the side of the left fuse holder.
31.3
Re-connect the live spade connector to the side of the right fuse holder.
31.4
Re-fit the front case (Refer to Page 9, Section 9).
Pump Repair
Issue 1
April 2010 SER0018
Chap 5
Page 27
Pump Repair Alpha Active 4 Service Manual
30
30
20
10
Item
10
20
30
Figure 16 - Removing the Terminal Block
Part Number
648425
REF
648449
Table 17 - Terminal Block
Description
Terminal Block Alpha Active 4
Screw (M3x15mm Pozi Pan Head, PT Type)
Filter Capacitor
Qty
1
1
1
Chap 5
Page 28 SER0018
Issue 1
April 2010
Alpha Active 4 Service Manual Pump Repair
32 Removing the Terminal Block
32.1
Remove the front case (Refer to Page 9, Section 8).
32.2
Remove the red Transformer wires and the capacitor from Terminals T3 and T4 on the Terminal
Block (Fig 16, Item 10).
32.3
Remove the red Main PCB wires from Terminals T1 and T2 on the Terminal Block
(Fig 16, Item 10).
32.4
Remove the two live wires from Terminal T8 on the Terminal Block (Fig 16, Item 10).
32.5
Remove the neutral wire from Terminal T7 on the Terminal Block (Fig 16, Item 10).
32.6
Remove the two red compressor wires from Terminals T5 and T6 on the Terminal Block
(Fig 16, Item 10).
32.7
Remove the single securing screw (Fig 16, Item 20).
32.8
You can now remove the Terminal Block (Fig 16, Item 10).
33 Installing the Terminal Block
CAUTION: Whilst completing the installation, ensure all wires are free from entrapment.
33.1
Place the Terminal Block (Fig 16, Item 10) into position ensuring it is seated correctly.
33.2
Replace the single securing screw (Fig 16, Item 20).
33.3
Replace the two red compressor wires to Terminals T5 and T6 on the Terminal Block
(Fig 16, Item 10).
33.4
Replace the neutral wire from the Main PCB Connector J2 and the On/Off switch to Terminal T7 on the Terminal Block (Fig 16, Item 10).
33.5
Replace the two live wires from the Main PCB Connector J2 and the On/Off switch to Terminal
T8 on the Terminal Block (Fig 16, Item 10).
33.6
Replace the red Transformer wires, and the capacitor to Terminals T3 and T4 on the Terminal
Block (Fig 16, Item 10).
33.7
Replace the red Main PCB wires to Terminals T1 and T2 on the Terminal Block
(Fig 16, Item 10).
33.8
Re-fit the front case (Refer to Page 9, Section 9).
Issue 1
April 2010 SER0018
Chap 5
Page 29
Pump Repair Alpha Active 4 Service Manual
Chap 5
Page 30 SER0018
Issue 1
April 2010
Alpha Active 4 Service Manual Mattress Repair
CHAPTER 6
MATTRESS REPAIR
1 General
This chapter details repair procedures for the Alpha Active 4 Mattress Replacement. All repairs should be carried out by ArjoHuntleigh approved service personnel.
It is easier to carry out the repair procedures in this chapter if the mattress is fully deflated first.
Disconnect the tubeset between the mattress and the pump to deflate the mattress.
After carrying out a service or any of these repairs on the mattress, check the following:
1.1
All press studs on the mattress are connected.
1.2
All cell assemblies are securely held by their straps. The repair will normally have disturbed the position of the other cells, and they should be re-positioned accordingly.
2 Alpha Active 4 Cell Layout
Issue 1
April 2010
Figure 17 - Mattress Cell Layout
SER0018
Chap 6
Page 1
Mattress Repair
50
10
Alpha Active 4 Service Manual
40
20
Item
10
-
20
30
40
50
Figure 18 - Alpha Active 4 Mattress
Part Number
648437
648461
648438
648463
648465
REF
648442
648443
Table 18 - Alpha Active 4 Mattress
Description
Mattress Top Cover (90cm Wide)
Mattress Top Cover (85cm Wide)
Mattress Base Cover (90cm Wide)
Mattress Base Cover (85cm Wide)
Mattress Base Cover PU (85cmWide)
Zip
Tubeset Connector - Alpha Active 4
Tri bore tubing. 9.5mm ID x 14.5mm OD x 1370mm
30
Qty
1
-
1
2
1
1
Chap 6
Page 2 SER0018
Issue 1
April 2010
Alpha Active 4 Service Manual
3 Removing The Top Cover
3.1
Fully unroll the mattress on a suitable surface.
3.2
Undo the zips (Fig 18, Item 30) on both sides of the top cover.
3.3
Remove the top cover.
Mattress Repair
4 Installing the Top Cover
4.1
Position the top cover (Fig 18, Item 10) on to the mattress. Make sure the feet symbol is at the foot end of the mattress.
4.2
Secure the two zips on the long sides of the mattress (Fig 18, Item 30) to the correct side of the top cover (Fig 18, Item 10).
Issue 1
April 2010 SER0018
Chap 6
Page 3
Mattress Repair Alpha Active 4 Service Manual
10
60
50
30
20
40
Feed To Head End
Figure 19 - Cell Assembly
Cell
20 30
Feed From Foot End
Chap 6
Page 4 SER0018
Issue 1
April 2010
Alpha Active 4 Service Manual Mattress Repair
5 Removing Cell Assembly
5.1
Remove the top cover, (Refer to Page 3, Section 3).
5.2
Disconnect the press studs from each end of the cell ((Fig 19, Item 60).
5.3
Disconnect the lower (Fig 19, Item 30) and upper (Fig 19, Item 20) cell feed connectors from the
T-Pieces (Fig 19, Item 40).
5.4
Pull the cell out of the retaining loop in the base cover and remove from the mattress.
6 Installing Cell Assembly
6.1
Pass the cell through the loop on the air pad cover and centralise the cell.
6.2
Connect the upper (Fig 19, Item 20) and lower (Fig 19, Item 30) cell feed connectors to each T-
Pieces (Fig 19, Item 40).
Note: Installing the cell feeds is made easier if the cell connector and/or T-Piece is wetted immediately prior to insertion.
6.3
Reconnect the male press studs to the female studs (Fig 19, Item 60) at the end of the cell.
6.4
Install the top cover (Refer to Page 3, Section 4).
20
30
40
50
-
60
Item
10
Part Number
648439
648440
648467
648468
648470
648471
REF
REF
REF
REF
REF
REF
Table 19 - Cell Assembly Parts List
Description
Standard Cell (90cm Wide)
Ventilated Cell (90cm Wide)
Standard Cell (85cm Wide)
Ventilated Cell (85cm Wide)
Standard Cell PU(85cm Wide)
Ventilated Cell PU (85cm Wide)
Upper Cell Feed (Part of Item 10)
Lower (Static) Cell Feed (Part of Item 10)
T-Piece
Single Bore Tubing
Press Stud Male
Press Stud Female (Located Inside Mattress Base Cover)
Qty
11
8
38
-
-
-
1
1
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April 2010 SER0018
Chap 6
Page 5
Mattress Repair Alpha Active 4 Service Manual
20
20
20
20
20
20
10
80
20
20
Chap 6
Page 6
A
60
20
30
30
20
60
20
20
60
60
20
20
70
60
60
20
20
60
20
B
- Continued from point ‘A’
Figure 20 - Manifold Tubing
SER0018
40
30
90
50
30
80
80
20
50
20
Issue 1
April 2010
Alpha Active 4 Service Manual Mattress Repair
7 Replacing Manifold Tubing
7.1
Remove the top cover, (Refer to Page 3, Section 3).
7.2
Disconnect the press studs from each end of the cell ((Fig 19, Item 60).
7.3
Disconnect the lower (Fig 19, Item 30) and upper (Fig 19, Item 20) cell feed connectors from the
T-Pieces (Fig 19, Item 40).
7.4
Connect the upper (Fig 19, Item 20) and lower (Fig 19, Item 30) cell feed connectors to each T-
Pieces (Fig 19, Item 40).
Note: Installing the cell feeds is made easier if the cell connector and/or T-Piece is wetted immediately prior to insertion.
7.5
Reconnect the male press studs to the female studs (Fig 19, Item 60) at the end of the cell.
7.6
Install the top cover (Refer to Page 3, Section 4).
Item
50
60
-
70
10
20
30
40
80
90
Part Number
REF
REF
REF
REF
REF
REF
648436
648443
648444
648441
Table 20 - Cell Assembly Parts List
Description
50mm (Cut to length from 648436)
84mm (Cut to length from 648436)
40mm (Cut to length from 648436)
140mm (Cut to length from 648436)
64mm (Cut to length from 648436)
184mm (Cut to length from 648436)
Single bore tubing: ID 9.5mm x OD14.5mm
Tri Bore Tubing
Static Check Valve
CPR
Qty
3
1
Issue 1
April 2010 SER0018
Chap 6
Page 7
Mattress Repair Alpha Active 4 Service Manual
10
Head Cells Removed For Drawing Clarification
Item
10
Figure 21 - CPR Assembly
Part Number
648441
Table 21 - CPR Assembly Parts List
Description
CPR
Qty
1
Chap 6
Page 8 SER0018
Issue 1
April 2010
Alpha Active 4 Service Manual
8 Removing CPR Assembly
8.1
Remove the top cover, (Refer to Page 3, Section 3).
8.2
Disconnect the press studs from cells either side of the CPR assembly.
8.3
Disconnect the feed tubes from either side of the CPR unit.
8.4
Remove CPR Assembly from mattress (Fig 21, Item 10).
Mattress Repair
9 Installing CPR Assembly
9.1
Connect the feed tubes from either side of the CPR unit.
Note: Installing the feed tubes is made easier if the CPR unit connectors are wetted immediately prior to insertion.
9.2
Reconnect the press studs to each end of the cell.
9.3
Install the top cover (Refer to Page 3, Section 4).
Issue 1
April 2010 SER0018
Chap 6
Page 9
Mattress Repair
Red
10
Yellow
Alpha Active 4 Service Manual
To Cells To Pump
20
Item
10
20
Figure 22 - Static Feed Check Valve
Part Number
648444
BP196
Table 22 - Static Section Feed Valve Parts List
Static Feed Check Valve
Tie Wrap
Description Qty
3
6
Chap 6
Page 10 SER0018
Issue 1
April 2010
Alpha Active 4 Service Manual Mattress Repair
10 Removing Static Feed Check Valves
Note: There are 3 Static Feed Check Valves on the Alpha Active 4. Two at the head end, and one at the foot end.
10.1
Remove the top cover, (Refer to Page 3, Section 3).
10.2
Release the pop studs on three surrounding cells for easier access to the Check Valve.
10.3
Remove the two cable ties (Fig 22, Item 20) located on either side of the Check Valve
(Fig 22, Item 10) barbs.
10.4
Seperate the tubes away from the Check Valve.
10.5
Remove the Check Valve (Fig 22, Item 10).
11 Installing Static Feed Check Valves
CAUTION: Ensure correct orientation is followed during this installation
(Refer to Page 10, Figure 22).
11.1
Place the Check Valve (Fig 22, Item 10) in position.
11.2
Connect the two tubes to the Check Valve (Fig 22, Item 10) barbs.
11.3
Secure the tubing with two cable ties (Fig 22, Item 20).
11.4
Secure the three cells pop studs that were released in Para 10.2.
11.5
Install the top cover (Refer to Page 3, Section 4).
Issue 1
April 2010 SER0018
Chap 6
Page 11
Mattress Repair Alpha Active 4 Service Manual
20
20
10
10
10
Item
10
20
Figure 23 - 3-Way Connector
Part Number
648442
648443
Table 23 - 3-Way Connector Parts List
Description
3-Way Connector
Tri bore tubing. 9.5mm ID x 14.5mm OD x 1370mm
Qty
1
1
Chap 6
Page 12 SER0018
Issue 1
April 2010
Alpha Active 4 Service Manual Mattress Repair
12 Removing 3-Way Connector
12.1
With the tubeset (Fig 23, Item 20) held securely in one hand, pull the top of the 3-way connector
(Fig 23, Item 10) away from the tubeset as shown in Figure 23
1
.
12.2
Pull the bottom of the 3-way connector away from the tubeset (Figure 23
2
).
12.3
You can now pull the 3-way connector away
3
(Fig 23, Item 10).
13 Installing 3-Way Connector
Note: Orientation of this part is un-important.
13.1
Align the tubeset (Fig 23, Item 20) with the barbs on the rear of the 3-way connector
(Fig 23, Item 10).
13.2
Push the tubeset fully onto the connector until all three tubes contact the base of the connector.
13.3
Ensure the 3-way connector (Fig 23, Item 10) is securely fitted to the tubeset (Fig 23, Item 20).
Issue 1
April 2010 SER0018
Chap 6
Page 13
Mattress Repair Alpha Active 4 Service Manual
Chap 6
Page 14 SER0018
Issue 1
April 2010
Alpha Active 4 Service Manual
CHAPTER 7
TECHNICAL SPECIFICATION
PUMP
Model:
Part Numbers:
Supply Voltage:
Supply Frequency:
Power Input:
Size:
Weight:
Case Material:
Plug Fuse Rating:
Pump Fuse Rating:
Degree of protection against electric shock:
Degree of protection against liquid ingress:
Mode of operation:
Cycle Times:
Alpha Active 4
648311
648314
648315
648319AU
230V
50-60Hz
230VA
UK
German
Euro
Australia
(L)280mm x (W)205mm x (H)112mm
2.5kg
ABS Plastic
5A to BS1362 (UK ONLY)
T1AL 250V
Class II, Double Insulated
Type BF
IPX0
Continuous
10 mins
Inflate - 4.5 mins
Crossover - 30 secs
Deflate - 4.5 mins
Crossover - 30 secs
20 mins
Inflate - 9.5 mins
Crossover - 30 secs
Deflate - 9.5 mins
Crossover - 30 secs
SYMBOLS
O
(Off)
I
(On)
Power
Disconnects from the mains supply
Power
Connects to the mains supply
Dangerous voltage
Technical Specification
i
Do not dispose of in the domestic refuse
Refer to accompanying documents
Fuse
(If shown on pump label)
Alternating Current
Type BF
Ref:
Model number
Double Insulated
Refer to the User
Manual
SN:
Serial Number
Issue 1
April 2010 SER0018
Chap 7
Page 1
Technical Specification Alpha Active 4 Service Manual
ENVIRONMENTAL INFORMATION
Condition Temperature Range
+10°C to +40°C
Operating
(Pump)
Storage and Transport
(Pump)
-40°C to +70°C
Relative Humidity
30% to 75%
10% to 95%
(non-condensing)
MATTRESS
Description
ALPHA ACTIVE 4 MR 90
ALPHA ACTIVE 4 MR 85
ALPHA ACTIVE 4 MR Non PVC 85
MATTRESS SIZE INFORMATION
Cell Material
Polyurethane
Polyurethane
Polyurethane
Part No.
Description
Spare
Cover
648322 ALPHA ACTIVE 4 MR 90 648437
648324
648326
ALPHA ACTIVE 4 MR 85
ALPHA ACTIVE 4 MR 85 PU
648461
648461
Atmospheric Pressure
700hPa to 1060 hPa
500 hPa to 1060 hPa
Base Pad Material
PVC Nylon Coated
PVC Nylon Coated
PU Coated
Length mm
1950
(77")
1950
(77")
1950
(77")
Width mm
900(35")
Height mm
200 (8")
850(33") 200 (8")
850(33") 200 (8")
Chap 7
Page 2 SER0018
Issue 1
April 2010
Alpha Active 4 Service Manual Technical Specification
COVER SPECIFICATION
Feature
Removable Cover
Moisture Vapour Permeable
Air Permeable
Low Friction
Water Resistant / Repellent
Infection
Control
Fire Retardant
2-Way Stretch
Washing Conditions
Drying Conditions
Life Span
Application Area
Standard Cover
(Dartex)
®
Yes
Yes
No
Yes
Yes
Material coating is Bacteriostatic, fungistatic, antimicrobial
BS 7175: 0,1 & 5
Yes
MAX 95°C (203°F) for 15 mins
(1)
Tumble Dry up to 130°C (266°F) or Air Dry
50 Wash Cycles
(minimum)
Acute and Homecare
1. Check your local policy to determine the time/temperature ratio required to achieve thermal disinfection.
CLEANING SYMBOLS
Wash at 80°C (176°F) Do not tumble dry above 50°C.
Do not iron Do Not Use Phenol-based cleaning Solutions
Wipe surface with damp cloth
Use solution diluted to 1000 ppm of Available
Chlorine
Issue 1
April 2010 SER0018
Chap 7
Page 3
Technical Specification Alpha Active 4 Service Manual
Chap 7
Page 4 SER0018
Issue 1
April 2010
Alpha Active 4 Service Manual
CHAPTER 8
SPARE PARTS
1 Pump Assembly Parts List
Part Number
648404
648405
648420
648421
648428
648425
648408
648422
648410
648418
648419
648447
648449
648401
648402
648403
648429
648449
MIS106
648423
648406
648407
Description
• Mains/Power Cable - Euro
• Mains/Power Cable - UK
• Mains/Power Cable - AUS
• Ferite 28mm
• Ferite 12mm
• Front Case
• Rear Case
• Bed Hook
• Air Filter
• Air Filter Grill
• Display PCB
• Main PCB
• Battery
• Terminal Block
• Compressor
• Rotor/Stator Assembly
• Transformer
• Filter Capacitor
• Mains Fuse (1A Time Lag T Fuse)
• Hose Connector Alpha Active 4
• Fuse Holder
• Mains Switich
2 Mattress Assembly Parts List
Part Number
648437
648461
648438
Description
• Top Cover (195cm x 90cm) - printed with logo
• Top Cover (195cm x 85cm) - printed with logo
• Base Cover (195cm x 90cm)
Issue 1
April 2010 SER0018
Spare Parts
Fig - Item Qty
3-NA
3-20
6-40
11-10
12-20
16-10
8-10
9-10
-
15-10
-
15-20
15-30
6-10
3-10
4-30
10-10
16-30
5-20
6-60
14-10
13-10
1
1
1
1
1
1
1
1
1
2
1
1
-
1
1
-
2
1
1
1
2
1
Fig - Item Qty
-
18-10
18-20
1
-
1
Chap 8
Page 1
Spare Parts
Part Number
648463
648465
648442
648444
648441
648439
648440
648467
648468
648470
648471
648436
648443
BP196
Description
• Base Cover (195cm x 85cm)
• Base Cover PU (195cm x 85cm)
• Tubeset Connector Alpha Active 4
• Static Feed Check Valve
• CPR Assembly
• Standard Cell (90cm Wide)
• Ventilated Cell (90cm Wide)
• Standard Cell (85cm Wide)
• Ventilated Cell (85cm Wide)
• Standard Cell PU (85cm Wide)
• Ventilated Cell PU (85cm Wide)
• Single bore tubing
•
• Tri bore tubing
• Tie Wrap
Alpha Active 4 Service Manual
Fig - Item Qty
-
-
23-10
22-10
21-10
19-10
-
19-10
-
-
-
20-NA
20-70
8
-
1
11
1
3
-
-
-
-
-
-
-
20-21 6
Chap 8
Page 2 SER0018
Issue 1
April 2010
Alpha Active 4 Service Manual Service Contact Details
Africa
Huntleigh Africa (Pty) Ltd
William Cruywagen Avenue
Stand 120, Klerksoord, Pretoria
T +27 12 542 4680
F +27 12 542 4982
Belgium
ArjoHuntleigh NV SA
Stapelplein 70, 9000 Gent, Belgium
T +32 9 265 8770
F +32 9 265 8771
France
HNE Médical
451 Chemin de Champivost
BP20, 69579 Limonest, Cedex, France
T +33 (0)4 78 66 62 66
F +33 (0)4 78 66 62 67
Holland
ArjoHuntleigh BV
Antennestraat 45, 1322 AH Almere, Holland
T +31 36 533 5588
F +31 36 547 5075
Middle East
Huntleigh Technology PLC
307 Sh. Zayed Road
Dubai
United Arab Emirates
Singapore
ArjoHuntleigh Pte Limited
Block 603, Elias Road, #08-232
Singapore 510603
T +61 8 9 309 3083
F +60 8 9 309 4582
CHAPTER 9
SERVICE CONTACT DETAILS
Australia
ArjoHuntleigh Pty Limited
PO Box 330
Hamilton Hill
Western Australia 6963
T +61 8 9 337 4111
F +61 8 9 337 9077
Denmark
ArjoHuntleigh A/S
Vassingerødvej 52, 3540 Lynge, Denmark
T +45 4 913 8486
F +45 4 913 8487
Germany
HNE Huntleigh Nesbit Evans
Healthcare GmbH
Im Hülsenfeld 19, 40721 Hilden, Germany
T +49 (0)2103 97 11 0
F +49 (0)2103 97 11 80
India
ArjoHuntleigh India Pvt. Ltd
8, Shah Industrial estate
Off, Shah Industrial estate
Off Veera Desai Road
Andheri (West)
Mumbai – 400 053
India
New Zealand
ArjoHuntleigh Ltd
Unit 6/38 Eaglehurst Road
Ellerslie, Auckland, NZ
T +64 9 525 2488
F +64 9 525 2433
Sweden
Huntleigh Liljenberg AB
Box 30012
200 61 Limhamm, Sweden
T +46 40 36 03 50
F +46 40 49 43 75
Issue 1
April 2010 SER0018
Chap 9
Page 1
Service Contact Details
UK
ArjoHuntleigh Limited
310-312 Dallow Road
Luton
Bedfordshire
LU1 1TD
T +44 (0)1582 413104
F +44 (0)1582 459100
Spain
ArjoHuntleigh SL
C/ de la Creueta 25
08130-Santa Perpetua de la Mogoda,
Barcelona,
T +34 93 5745754
F +34 93 5745861
Alpha Active 4 Service Manual
United States of America
ArjoHuntleigh
2349 W Lake Street- Suite 250
Addison, IL 60101, USA
Tel: +1 630 307 2756
Toll Free US: (800) 323 1245
Fax: +1 630 307 6195
Japan
ArjoHuntleigh Japan K.K.
4-1-15 Goko-Dori
Chuoku
Kobe 651-0087
T +81 78 231 8735
F +81 78 231 8736
Chap 9
Page 2 SER0018
Issue 1
April 2010
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