Getinge Arjohuntleigh NIMBUS II Service Manual
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Getinge Arjohuntleigh NIMBUS II Service Manual

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NIMBUS II, NIMBUS 3, NIMBUS 3
PROFESSIONAL, DFS2 & DFS3
Service Manual

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Summary of Contents for Getinge Arjohuntleigh NIMBUS II

  • Page 1 NIMBUS II, NIMBUS 3, NIMBUS 3 PROFESSIONAL, DFS2 & DFS3 Service Manual...
  • Page 3 Nimbus/DFS Service Manual Service Bulletins Incorporated Date Bulletin Content incorporated SERB006 New Tubeset 151200 April 2010 SERB013 New Main PCB and modified wiring for USA Compressors April 2010 SERB024 Nimbus 3 Professional April 2010 Issue 2 April 2010 SER0001 Page i...
  • Page 4 Nimbus/DFS Service Manual Issue 2 Page ii SER0001 April 2010...

  • Page 5: Table Of Contents

    Nimbus/DFS Service Manual CHAPTER 1 Introduction ........1 About This Manual .
  • Page 6 Nimbus/DFS Service Manual Removing the Rotary Valve Assembly ......19 Installing the Rotary Valve Assembly ......20 PCB Repairs .
  • Page 7 Nimbus/DFS Service Manual Mattress Repair ........1 General .
  • Page 8 Nimbus/DFS Service Manual CHAPTER 5 Troubleshooting ........1 Troubleshooting Table .
  • Page 9 Nimbus/DFS Service Manual Electrical Safety Checks - Class I ......13 Earth Continuity Tests .
  • Page 10 Nimbus/DFS Service Manual Issue 2 Page viii SER0001 April 2010...

  • Page 11: Chapter 1 Introduction

    Nimbus/DFS Service Manual Introduction CHAPTER 1 INTRODUCTION 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.

  • Page 12: Dynamic Mode

    Introduction Nimbus/DFS Service Manual Dynamic Mode In dynamic mode the support surface beneath the patient is cycled every 10 minutes providing periods of pressure relief for the whole body. Figure 1 and Figure 2 show how the system operates in dynamic and static modes. Figure 2 shows the pneumatic circuit in principle.

  • Page 13: Static Mode

    Nimbus/DFS Service Manual Introduction Static Mode In static mode the support surface is kept constant and provides pressure reduction without cycling. The rotary valve is held in a constant position so that cells A, B, C and the heel protector are equally inflated. Figure 2 - Pneumatic System Diagram Auto-Matt The Auto-Matt sensor consists of a flexible air sensor pad which is located underneath the mattress cells.

  • Page 14: System Start Up Sequence

    Introduction Nimbus/DFS Service Manual It is pneumatically connected in parallel to the mattress cells and when it is not occluded it channels the air supply away from the cells. Occlusion of the Auto-Matt sensor is by patient weight and position. In this manner it allows internal mattress air pressures to be compensated to that required to support the patient.

  • Page 15: Chapter 2 Maintenance

    Nimbus/DFS Service Manual Maintenance CHAPTER 2 MAINTENANCE Pump Maintenance Checks If any parts are found to be damaged they must be replaced in accordance with Chapter 3 “Pump Repair”. Visually inspect the following for damage, wear and potential faults: 1.1.1 Outer Casing Check for damage and security.

  • Page 16: Pump Service

    Maintenance Nimbus/DFS Service Manual All pumps should be soaked for a period of 30 to 60 minutes prior to any pneumatic performance test being carried out. If any of the following major/critical components have been replaced or repaired, then it is recommended that the pump be soaked for 12 hours prior to being tested: •...

  • Page 17: Mattress Service

    Nimbus/DFS Service Manual Maintenance 4.1.11 Manifold Check for damage and security. 4.1.12 Partial Non-Return Valves Check for condition. 4.1.13 Heel Protector Check for damage and security. 4.1.14 Pop Studs Check condition. 4.1.15 CPR Unit Check operation of Fast Deflate mechanism. 4.1.16 CPR Transport Knob Check operation.
  • Page 18 Maintenance Nimbus/DFS Service Manual Chap 2 Issue 2 Page 4 SER0001 April 2010...

  • Page 19: Chapter 3 Pump Repair

    Nimbus/DFS Service Manual Pump Repair CHAPTER 3 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. General This chapter details repair procedures for the Nimbus 2, Nimbus 3, DFS 2, DFS 3 and Nimbus 3 Professional pumps.
  • Page 20 Pump Repair Nimbus/DFS Service Manual Figure 3 - Removing and installing the Hanging Bracket Table 2 - Hanging Bracket Part List Item Part Number Description 151123 Hanging Bracket Assembly 151427 Bracket 151428 Wire FAS046 Screw M3 x 10 CSK FAS216 Nut M3 x 0.5 Euro Series Chap 3 Issue 2...

  • Page 21: Removing The Hanging Bracket

    Nimbus/DFS Service Manual Pump Repair Removing the Hanging Bracket Ease the bottom of the hanging bracket off of the base of the pump. Rotate the hanging bracket (Refer to Figure 3) and remove it from the handle recess in the back of the pump.
  • Page 22 Pump Repair Nimbus/DFS Service Manual Figure 4 - Rear Case Assembly Chap 3 Issue 2 Page 4 SER0001 April 2010...

  • Page 23: Disassembling The Rear Case

    Nimbus/DFS Service Manual Pump Repair Disassembling the Rear Case WARNING: BEFORE DISMANTLING THE PUMP UNIT, ENSURE THE UNIT HAS BEEN ISOLATED FROM THE POWER SUPPLY BY REMOVING THE MAINS/POWER PLUG FROM THE WALL SOCKET. Remove the hanging bracket from the pump (Refer to Chapter 3, Page 3, Section 2). Place the pump unit on a flat surface with the front case (Fig 4, Item 20) face down.
  • Page 24 Pump Repair Nimbus/DFS Service Manual Figure 5 - Pump Filter Assembly Chap 3 Issue 2 Page 6 SER0001 April 2010...

  • Page 25: Disassembling The Pump Filter

    Nimbus/DFS Service Manual Pump Repair Disassembling the Pump Filter Disassemble the Rear Case (Refer to Chapter 3, Page 5, Section 4). Lay the Rear Case on a flat surface and remove the six screws (Fig 5, Item 40) and keep them in a safe place.
  • Page 26 Pump Repair Nimbus/DFS Service Manual Figure 6 - Remove the Double Compressor Assembly and Disassemble the AV mounts Chap 3 Issue 2 Page 8 SER0001 April 2010...

  • Page 27: Removing The Double Compressor Assembly

    Nimbus/DFS Service Manual Pump Repair Removing the Double Compressor Assembly Disassemble the Rear Case (Refer to Chapter 3, Page 5, Section 4). Remove the screws (Fig 6, Item 50) and the compressor lids (Fig 6, Item 20). Lift the four pairs of power cables, together with the rubber grommets, out from the side of each compressor casing.

  • Page 28: Removing The Av Mounts

    Pump Repair Nimbus/DFS Service Manual Removing the AV Mounts 10.1 Remove the double compressor assembly (Refer to Chapter 3, Page 9, Section 8). 10.2 Remove the items that follow from the earthing stud on the right compressor bracket: 10.2.1 The nut and washer (Fig 6, Items 60 and 70). 10.2.2 The 4 earth wire connectors (PCB, Compressor, Front Panel and Rotary).
  • Page 29 Nimbus/DFS Service Manual Pump Repair Table 5 - Compressor Parts List Item Part Number Description 165076 Double Compressor Assembly - 220V (UK, EURO) 165074 Double Compressor Assembly - 120V (USA) 165077 Double Compressor Assembly - 100V (Japan 60Hz) 165078 Double Compressor Assembly - 100V (Japan 50Hz) 165311 Compressor Lid 165312...
  • Page 30 Pump Repair Nimbus/DFS Service Manual Figure 7 - Replacing the Compressor Bump Stops Table 6 - Compressor Bump Stops Parts List Item Part Number Description FAS051 Screw M4 6mm Pan Head FAS160 Washer M4 Plain 165310 Bump Stop 165324 Bump Stop Plate FAS177 Screw M4 8mm Torx C’SK Head FAS193...

  • Page 31: Replacing The Compressor Filters

    Nimbus/DFS Service Manual Pump Repair Replacing the Compressor Filters 12.1 Disassemble the Rear Case (Refer to Chapter 3, Page 5, Section 4). 12.2 For each compressor filter (8 in total): 12.2.1 Remove the screw and the compressor filter lid (Fig 7, Items 60 and 70). 12.2.2 Replace the compressor filter (Fig 7, Item 80).
  • Page 32 Pump Repair Nimbus/DFS Service Manual Slot Guide Coil Plate 50 60 Connector shown cut away for clarity Tube shown disconnected from connector to gain access to the screw 30 40 Figure 8 - Replacing the Shuttles and the Coils of the Compressor Table 7 - Shuttle and Coil Parts List and Special Tool Item Part Number...

  • Page 33: Replacing The Shuttle Assemblies

    Nimbus/DFS Service Manual Pump Repair Table 7 - Shuttle and Coil Parts List and Special Tool Item Part Number Description 165301 Connector - Outlet tube 165302 Plug - Outlet tube 165300 Grommet - Blank 165305 Compressor Casting Half Centre Seal 165304 Compressor Casting Half Replacing the Shuttle Assemblies...
  • Page 34 Pump Repair Nimbus/DFS Service Manual 16.9 Move both coils away from the shuttle and carefully place the appropriate saddle gauge over the shuttle magnet, in between the coils (Fig 8, Item 70). Note: The spacer saddle gauge set (Item 90) comprises 5 saddle gauges. The gauges provide adjustment in steps of 0.5 litres/minute with gauge A giving maximum air flow and gauge E giving minimum air flow.

  • Page 35: Replacing The Manifold Gasket

    Nimbus/DFS Service Manual Pump Repair Old case moulding without raised boss New case moulding with raised boss Figure 9 - Replacing the Manifold Gasket Replacing the Manifold Gasket 17.1 Remove the manifold screws (Fig 9, Item 40). 17.2 Remove the manifold outer (Fig 9, Item 30A or 30B) and the manifold gasket (Fig 9, Item 20). The manifold inner (Fig 9, Item 10) will remain connected to the tubes inside the pump.
  • Page 36 Pump Repair Nimbus/DFS Service Manual 17.3 Install the new manifold gasket (Fig 9, Item 20), the manifold outer (Fig 9, Item 30A or 30B) and the screws (Fig 9, Item 40). Table 8 - Manifold Parts List Item Part Number Description 151480 Manifold 5 Way Barbed...

  • Page 37: Removing The Rotary Valve Assembly

    Nimbus/DFS Service Manual Pump Repair Removing the Rotary Valve Assembly Note: The Rotary Valve Assembly shown in Figure is from a Nimbus 2/DFS 2 pump. The procedure for a Nimbus 3/DFS 3 pump is identical to that detailed below, the only difference being the Rotary Valve Assembly in a Nimbus 3/DFS3 pump is larger in size.

  • Page 38: Installing The Rotary Valve Assembly

    Pump Repair Nimbus/DFS Service Manual Installing the Rotary Valve Assembly 19.1 If necessary, install the pillars (Fig 10, Item 40) into the pump case. 19.2 Install the rotary valve assembly (Fig 10, Item 10) onto the pillars (Fig 10, Item 40). Make sure the microswitch and timer cables lead underneath the rotary valve assembly, between the pillars.

  • Page 39: Pcb Repairs

    Nimbus/DFS Service Manual Pump Repair PCB Repairs 20.1 Main PCB assemblies: 20.1.1 All repairs to any Nimbus / DFS pumps will use the following new-style main PCB assemblies. Note: These PCB assemblies incorporate an on-board mains/power filter. 151549 Nimbus 3 PCB Leaded Assembly, 120V 151550 Nimbus 3 PCB Leaded Assembly, 230V Note: All other PCB assemblies have been made obsolete and have NO on-board mains/power filter.

  • Page 40: Main Pcb Assembly

    Pump Repair Nimbus/DFS Service Manual Main PCB Assembly 22.1 Refer to Chapter 3 “Pump Repair”, Page 21, Section 20 for part numbers of the new-style single PCB assemblies and fuseholder assemblies. 22.2 For the interchangeability of old and new main PCB assemblies, refer to Page 21, Table 10. General Repair Information.
  • Page 41 Nimbus/DFS Service Manual Pump Repair 22.4.2 Nimbus 2 / DFS 2 and early Nimbus 3 / DFS 3 pumps. 22.4.2.1 The pumps contain the following three PCBs: • Old-style Control PCB. • Power Supply PCB. • Daughter Board (this daughter board was fitted as a modification to Nimbus 2 and DFS 2 pumps).
  • Page 42 Pump Repair Nimbus/DFS Service Manual 22.4.3 Modified Nimbus 2 and later Nimbus 3, DFS 2 and DFS 3 pumps. 22.4.3.1 The pumps contain the old-style single PCB, which utilises a discrete mains/ power filter mounted on the pump case. Figure 13 - Wiring Schematic for Nimbus 2/3 and DFS2/3 Pumps with 1 Circuit Board 22.4.3.2 If the PCB needs replacing, then do the following: •...
  • Page 43 Nimbus/DFS Service Manual Pump Repair 22.4.4 New-build Nimbus 3 and DFS 3 pumps. 22.4.4.1 The pumps already contain the new-style single PCB assembly (151550 for 230V, 151549 for 120V) Brown Blue Pressure Control Micro-switch (LP) Power Switch Display Panel PCB Brown Blue HP Cycle...
  • Page 44 Pump Repair Nimbus/DFS Service Manual Figure 15 - Removing the Old Style Display PCB and PCB Transformer Table 11 - Old-Style Display Board PCB, Transformer & Front Panel Parts List Item Part Number Description Power Supply PCB 240V (Nimbus 2 and Early Nimbus 3) Power Supply PCB 120V (DFS 2) Screw Old Style Display Board PCB...

  • Page 45: Removing The Old Style Display Pcb, Pcb Transformer And Daughter Board (If Fitted)

    Nimbus/DFS Service Manual Pump Repair Removing the Old Style Display PCB, PCB Transformer and Daughter Board (if fitted). 23.1 Disassemble the Rear Case (Refer to Chapter 3, Page 5, Section 4). 23.2 Cut and remove any cable ties as necessary and disconnect the wires as follows: 23.2.1 Rotary Assembly Motor 23.2.2...
  • Page 46 Pump Repair Nimbus/DFS Service Manual Figure 16 - Replacing the New Style Display PCB Table 12 - New Style Display PCB Parts List Item Part Number Description 151550 New Style Display Board PCB 240V (UK, EURO) 151549 New Style Display Board PCB 120V (USA, Japan 50 & 60Hz) FAS098 Nut M3 Full FAS091...

  • Page 47: Removing The New Style Display Pcb

    Nimbus/DFS Service Manual Pump Repair Removing the New Style Display PCB 24.1 Disassemble the Rear Case (Refer to Chapter 3, Page 5, Section 4). 24.2 Cut and remove any cable ties as necessary and disconnect the wires as follows: 24.2.1 Rotary Assembly Motor 24.2.2 Compressor Power Cable...
  • Page 48 Pump Repair Nimbus/DFS Service Manual Low Pressure Control Assembly Main PCB Mains/Power Switch VALVE COMP CYCLE COMP MAINS IN High SENSE Blue Pressure Switch Brown Motor Microswitch Rotary Valve Assembly Compressors Fuses Figure 17 - Circuit Diagram with New-Style Single PCB (except USA) Chap 3 Issue 2 Page 30...
  • Page 49 Nimbus/DFS Service Manual Pump Repair Low Pressure Control Assembly Main PCB Mains/Power Switch VALVE COMP CYCLE COMP MAINS IN High SENSE Blue Pressure Switch Brown Motor Microswitch Rotary Valve Assembly Compressors Fuses Figure 18 - Circuit Diagram with New-Style Single PCB (USA only) Issue 2 Chap 3 April 2010...
  • Page 50 Pump Repair Nimbus/DFS Service Manual Figure 19 - Replacing the New Style Front Panel Chap 3 Issue 2 Page 32 SER0001 April 2010...

  • Page 51: Removing The Front Panel

    Nimbus/DFS Service Manual Pump Repair Removing the Front Panel 26.1 Remove the Pressure Control Assembly (Refer to Chapter 3, Page 49, Section 39). 26.2 Remove screws (Fig 15, Item 20) and the PCB Transformer (Fig 15, Item 10) from the pump. 26.3 Remove the nuts and washers (Fig 15, Item 40, 50 and 60) from the Display Board PCB (Fig 15, Item 30).
  • Page 52 Pump Repair Nimbus/DFS Service Manual Live (Brown) Earth (Green/Yellow) Neutral (Blue) Figure 20 - Replacing the Mains/Power Inlet Socket Table 14 - Mains/Power Inlet Socket and Cordset Parts List Item Part Number Description 151351 Mains/Power Inlet Socket (with filter) 151580 Mains/Power Inlet Socket (without filter) FAS194 Screw...

  • Page 53: Replacing The Mains/Power Inlet Socket And Cordset (Moulded Cordset Versions Only)

    Nimbus/DFS Service Manual Pump Repair Replacing the Mains/Power Inlet Socket and Cordset (Moulded Cordset Versions Only) CAUTION: 151580 must only be used with PCB 151549 or 151550 28.1 Disassemble the Rear Case (Refer to Chapter 3, Page 5, Section 4). Note: For Nimbus 3 and DFS 3 pumps, the Bio Filter can be removed to gain easier access to the Fuse Holders (Refer to Page 59, Section 47).
  • Page 54 Pump Repair Nimbus/DFS Service Manual Earth - Green/Yellow (Green) Screws Neutral - Blue (White) Live - Brown (Black) Figure 21 - Replacing the Mains/Power Cable (Hard wired versions only) Table 15 - Mains/Power Cable (Hard wired versions only) Part List Item Part Number Description...

  • Page 55: Removing The Mains/Power Cable (Hard Wired Versions Only)

    Nimbus/DFS Service Manual Pump Repair Removing the Mains/Power Cable (Hard wired versions only) WARNING: BEFORE REPLACING THE MAINS/POWER CABLE, ENSURE THE PUMP UNIT HAS BEEN ISOLATED FROM THE MAINS/POWER SUPPLY BY REMOVING THE MAINS/POWER PLUG FROM THE WALL SOCKET. 29.1 Disassemble the Rear Case (Refer to Chapter 3, Page 5, Section 4).
  • Page 56 Pump Repair Nimbus/DFS Service Manual Rear view of pump Side view of pump Figure 22 - Replacing the Mains/Power Inlet Fuses and the Fuse Holders Table 16 - Mains/Power Inlet Fuses and Fuse Holders Part List Item Part Number Description 151069 Fuse Holder - Neutral (Blue) - (Pumps with mains/power inlet socket)

  • Page 57: Replacing The Mains/Power Fuses (All Versions)

    Nimbus/DFS Service Manual Pump Repair Replacing the Mains/Power Fuses (All Versions) WARNING: BEFORE REPLACING THE MAINS/POWER FUSES, ENSURE THE PUMP UNIT HAS BEEN ISOLATED FROM THE MAINS/POWER SUPPLY BY REMOVING THE MAINS/POWER PLUG FROM THE WALL SOCKET. 31.1 Unscrew the Fuse Holder Inner and remove the Fuse (Fig 22, Item 30). 31.2 Install the Fuse (Fig 22, Item 30) into the Fuse Holder Inner and screw into the Fuse Holder.
  • Page 58 Pump Repair Nimbus/DFS Service Manual Mains/Power Switch Compressor Rotary Valve Assy Mains/Power Filter Mains/Power Input PCB Assembly Earth Stud Mains/ Power Filter Fuseholders Fuse holder Side View of Pump Rear View of Pump 5-Way Connector 5-Way Connector Front of Pump 5-way Connector Wiring Filter Output - Blue Fuseholder - Blue...
  • Page 59 Nimbus/DFS Service Manual Pump Repair Earth Wires Compressor Front Panel/Display PCB Rotary Valve Mains/Power Filter Assembly Mains/Power Input Earth Stud 2 Wires To Lower Fuseholder (Item 80) Rear View of Pump Front of Pump 5-way Connector Wiring (Item 40) Filter Output - Blue Fuseholder (Item 20) - Blue Filter Output - Brown Fuseholder (Item 80) - Brown...

  • Page 60: Removing The Mains/Power Fuseholders (Hard Wired Versions Only)

    Pump Repair Nimbus/DFS Service Manual Removing the Mains/Power Fuseholders (Hard wired versions only) WARNING: BEFORE REPLACING THE MAINS/POWER FUSEHOLDERS, ENSURE THE PUMP UNIT HAS BEEN ISOLATED FROM THE MAINS/POWER SUPPLY BY REMOVING THE MAINS/POWER PLUG FROM THE WALL SOCKET. 33.1 Disassemble the Rear Case (Refer to Chapter 3, Page 5, Section 4).

  • Page 61: Installing The Mains/Power Fuseholders (Hard Wired Versons Only)

    Nimbus/DFS Service Manual Pump Repair Installing the Mains/Power Fuseholders (Hard wired versons only) 34.1 Feed the wires of the new fuseholder assembly (Fig 24, Item 20 or 80) through the hole in pump casing from the outside. 34.2 Pull the fuseholder shroud off the back of the fuseholder, and ease it through the hole. 34.3 Pass the back of the fuseholder through the hole.

  • Page 62: Removing The Mains/Power Filter (Hard Wired Versons Only)

    Pump Repair Nimbus/DFS Service Manual Removing the Mains/Power Filter (Hard wired versons only) WARNING: BEFORE REPLACING THE MAINS/POWER FILTER, ENSURE THE PUMP UNIT HAS BEEN ISOLATED FROM THE MAINS/POWER SUPPLY BY REMOVING THE MAINS/POWER PLUG FROM THE WALL SOCKET. 35.1 Disassemble the Rear Case (Refer to Chapter 3, Page 5, Section 4).

  • Page 63: Installing The Mains/Power Filter (Hard Wired Versions Only)

    Nimbus/DFS Service Manual Pump Repair Installing the Mains/Power Filter (Hard wired versions only) 36.1 Place the new mains/power filter (Fig 24, Item 60) in position in the casing, and install the screw (Fig 24, Item 70) to secure it. Note: Make sure that the 5 wires from the mains/power filter are routed correctly, and are not trapped beneath the filter.
  • Page 64 Pump Repair Nimbus/DFS Service Manual Mains/Power Switch Compressor Mains/Power Input Rotary Valve Assy Blue PCB Assembly Earth Stud Brown Fuseholder Fuseholders Rear view of pump Side view of pump 5-Way Connector 5-way Connector Wiring Not Used Not Used Not Used Not Used Earth/Stud - Green/Yellow Mains/Power Cable - Green/Yellow (Green)

  • Page 65: Removing The Mains/Power Fuseholders (Hard-Wired Pump With On-Board Mains/Power Filter)

    Nimbus/DFS Service Manual Pump Repair Removing the Mains/Power Fuseholders (Hard-wired pump with on-board mains/power filter) 37.1 Disassemble the Rear Case (Refer to Chapter 3, Page 5, Section 4). Note: For Nimbus 3 and DFS 3 pumps, the Bio Filter can be removed to gain easier access to the Fuse Holders (Refer to Page 59, Section 47).
  • Page 66 Pump Repair Nimbus/DFS Service Manual Figure 26 - Replacing The Pressure Control Assembly Table 19 - Pressure Control Assembly Parts List Item Part Number Description 151059 Pressure Control Assembly FAS043 Screw M3 x 6 Pan Hd FAS002 Washer 6BA 151305 Control Knob 151327 Control Knob Label...

  • Page 67: Removing The Pressure Control Assembly

    Nimbus/DFS Service Manual Pump Repair Removing the Pressure Control Assembly 39.1 Carefully prise the Control Knob (Fig 26, Item 40) off the front panel. 39.2 Disassemble the Rear Case (Refer to Chapter 3, Page 5, Section 4). 39.3 Disconnect the Pressure Control Assembly cable (Figure 26 Cable 3). 39.4 Disconnect the following hoses at the Pressure Control Assembly end: •...
  • Page 68 Pump Repair Nimbus/DFS Service Manual Figure 27 - Replacing the High Pressure Switch Table 20 - High Pressure Switch Parts List Item Part Number Description 198394 High Pressure Switch FAS182 Screw 3 x 20 Pan Hd Pozi PT 151068 High Pressure Switch Wire Assembly 151091 High Pressure Switch Tube Assembly Chap 3...

  • Page 69: Removing The High Pressure Switch

    Nimbus/DFS Service Manual Pump Repair Removing the High Pressure Switch 41.1 Disassemble the Rear Case (Refer to Chapter 3, Page 5, Section 4). 41.2 Disconnect the hose attached to the High Pressure Switch (A). 41.3 Cut and remove any cable ties and disconnect the High Pressure Switch cable (Figure 26, Cable 4).
  • Page 70 Pump Repair Nimbus/DFS Service Manual Figure 28 - Replacing the Power Switch Table 21 - Power Switch Parts List Item Part Number Description 151353 Power Switch Chap 3 Issue 2 Page 52 SER0001 April 2010...

  • Page 71: Replacing The Mains/Power Switch

    Nimbus/DFS Service Manual Pump Repair Replacing the Mains/Power Switch WARNING: BEFORE REPLACING THE MAINS/POWER SWITCH, ENSURE THE PUMP UNIT HAS BEEN ISOLATED FROM THE MAINS/POWER SUPPLY BY REMOVING THE MAINS/POWER PLUG FROM THE WALL SOCKET. 43.1 Disassemble the Rear Case (Refer to Chapter 3, Page 5, Section 4). 43.2 Disconnect the connectors from the back of the Power Switch (Refer to Figure 11, 12 13 or 14 - depending on the PCB fitted to the pump).
  • Page 72 Pump Repair Nimbus/DFS Service Manual Mains Cable Figure 29 - Replacing the 5-Way Connector and Support (Hard wired versions only) Chap 3 Issue 2 Page 54 SER0001 April 2010...

  • Page 73: Removing The 5-Way Connector And Support (Hard Wired Versions Only)

    Nimbus/DFS Service Manual Pump Repair Removing the 5-Way Connector and Support (Hard wired versions only) WARNING: BEFORE REPLACING THE 5-WAY CONNECTOR AND SUPPORT, ENSURE THE PUMP UNIT HAS BEEN ISOLATED FROM THE MAINS/POWER SUPPLY BY REMOVING THE MAINS/POWER PLUG FROM THE WALL SOCKET. 44.1 Remove the mains/power fuseholders (Refer to Chapter 3, Page 42, Section 33).
  • Page 74 Pump Repair Nimbus/DFS Service Manual Old connector configuration Not used 5-Way Connector Figure 30 - Replacing the Silencer Bag (Old 5-Way Connector Configuration) Table 23 - Silencer Bag and 5-Way Connector Tube Parts List Item Part Number Description 151098 Silencer Bag 151090 Pressure Control Assembly Tube 151101...

  • Page 75: Replacing The Silencer Bag

    Nimbus/DFS Service Manual Pump Repair New connector configuration Silicon Tube (Item 10) dimensions: A = 35 ± 1 mm B = 57 ± 1 mm Not used C = 28 ± 1 mm D = 25 ± 3 mm E = 57 ± 1 mm F = 162 ±...
  • Page 76 Pump Repair Nimbus/DFS Service Manual Wires fromPower Switch Corner Adaptor to Fuse Holder (Blue and Brown) Cable Ties Figure 32 - Replacing the Bio Filter (Nimbus 3 and DFS 3 Pumps Only) Table 25 - Bio Filter Part List Item Part Number Description 151450...

  • Page 77: Removing The Bio Filter (Nimbus 3 And Dfs 3 Pumps Only)

    Nimbus/DFS Service Manual Pump Repair Removing the Bio Filter (Nimbus 3 and DFS 3 Pumps Only) 47.1 Disassemble the Rear Case (Refer to Chapter 3, Page 5, Section 4). 47.2 If it is necessary to replace the Bio Filter hoses as well as the Bio Filter, then cut and remove the cable ties as shown in Figure 32.
  • Page 78 Pump Repair Nimbus/DFS Service Manual Figure 33 - Changing the Battery and replacing the Sounder Table 26 - Battery and Sounder Parts List Item Part Number Description 151457 Battery 151071 Sounder Chap 3 Issue 2 Page 60 SER0001 April 2010...

  • Page 79: Changing The Battery

    Nimbus/DFS Service Manual Pump Repair Changing the Battery 49.1 There are four configurations of battery in Nimbus and DFS pumps. These are as follows: 49.1.1 A soldered round battery on the display board PCB (Early Nimbus 2 and DFS 2 pumps only).

  • Page 80: Replacing The Pump Case

    Pump Repair Nimbus/DFS Service Manual Replacing the Pump Case 51.1 Remove the Pump Case as follows: 51.1.1 Disassemble the Rear Case (Refer to Chapter 3, Page 5, Section 4). 51.1.2 Disassemble the Pump Filter (Refer to Page 7, Section 6). 51.1.3 Remove the Double Compressor Assembly (Refer to Page 9, Section 8).

  • Page 81: Pump Label Sets

    Nimbus/DFS Service Manual Pump Repair Pump Label Sets The following table gives the part numbers for the pump label sets: Table 27 - Pump Label Sets Item Part Number Description 151382 Label Set Nimbus 2 (UK, EURO) 151397 Label Set Nimbus 2 (Germany) 151394 Label Set Nimbus 2 (France) 151416...
  • Page 82 Pump Repair Nimbus/DFS Service Manual Chap 3 Issue 2 Page 64 SER0001 April 2010...
  • Page 83 Nimbus/DFS Service Manual Mattress Repair CHAPTER 4 MATTRESS REPAIR General This chapter details repair procedures for the standard and narrow Nimbus and DFS mattresses. Chapter 4, Page 39, Section 33 onwards refers to the Nimbus Professional mattress. All repairs should be carried out by ArjoHuntleigh approved service personnel. After carrying out a service or any repairs, the mattress must be tested for serviceability.
  • Page 84 Mattress Repair Nimbus/DFS Service Manual Figure 34 - Disconnect the Heel Protector Figure 35 - Disconnect the 3 pop studs at the foot end of the mattress Chap 4 Issue 2 Page 2 SER0001 April 2010...

  • Page 85: Mattress Repair

    Nimbus/DFS Service Manual Mattress Repair Removing the Top Cover Undo the two zips down the long sides of the top cover and pull the velcro end flaps off of the base cover. Installing the Top Cover Position the top cover over the mattress with the feet logo uppermost and at the foot end of the bed.
  • Page 86 Mattress Repair Nimbus/DFS Service Manual Figure 36 - Disconnect the 6 pop studs at the head end of the mattress Figure 37 - Remove the soft and hard foam sheets from the pockets of the base cover Chap 4 Issue 2 Page 4 SER0001 April 2010...
  • Page 87 Nimbus/DFS Service Manual Mattress Repair Disconnect the six pop studs (Fig 36, Item 1) which connect the cell loop sheet to the base cover at the head end of the bed. Fold the mattress cell assembly back at the foot end of the bed and disconnect the sensor pad hoses (Fig 41, Item 1).
  • Page 88 Mattress Repair Nimbus/DFS Service Manual Figure 38 - Small hard foam sheet in position Figure 39 - Large hard foam sheet in position together with the sensor pad Chap 4 Issue 2 Page 6 SER0001 April 2010...

  • Page 89: Installing The Base Cover

    Nimbus/DFS Service Manual Mattress Repair Installing the Base Cover Install the small hard foam sheet (Fig 38, Item 1) into the pockets in the centre of the base cover. Install the large hard foam sheet (Fig 39, Item 1) into the pockets at each end of the base cover, with the sensor pad uppermost and sensor pad hoses towards the foot end of the base cover.
  • Page 90 Mattress Repair Nimbus/DFS Service Manual Figure 41 - Connecting the Sensor Pad Hoses to the CPR Unit Figure 42 - Fitting the CPR Unit in the Base Cover Pocket Chap 4 Issue 2 Page 8 SER0001 April 2010...

  • Page 91: Replacing The Soft Foam Sheet

    Nimbus/DFS Service Manual Mattress Repair Fold back the cell assembly at the foot end of the bed to reveal the sensor pad hoses (Fig 41, Item 1). Connect the sensor pad hoses to the hoses on the back of the CPR unit. Note: The sensor pad hoses for Nimbus 2/DFS 2 assemblies have to be routed through the hole in the base of the loop sheet and connected to the CPR Unit through the manifold assembly.
  • Page 92 Mattress Repair Nimbus/DFS Service Manual Figure 43 - Cell Configuration and Part Numbers Figure 44 - Cell pop studs and connectors Chap 4 Issue 2 Page 10 SER0001 April 2010...

  • Page 93: Cell Replacement

    Nimbus/DFS Service Manual Mattress Repair Cell Replacement There are 4 different types of cell (20 in total) in a Nimbus and DFS mattress. The cell configuration is shown in Figure 43. Always check that the replacement cell is of the same type as the cell to be changed. Removing a Cell Remove the top cover (Refer to Page 3, Section 2).

  • Page 94: Removing The Manifold Assembly

    Mattress Repair Nimbus/DFS Service Manual Connect the lower pop stud, at the opposite end of the cell, to the mattress loop sheet. Push the cell connector(s) (Fig 44, Item 2) fully into the manifold assembly. Note: Fitting the connectors into the manifold assembly is made easier if the connector is wetted with methylated spirit immediately prior to insertion.
  • Page 95 Nimbus/DFS Service Manual Mattress Repair Figure 46 - CPR and Heel Protector Connections to the Manifold Assembly 11.4 Connect all the lower pop studs (Fig 44, Item 3) on the cell corner flaps to the manifold assembly. 11.5 Push all the cell connector(s) (Fig 44, Item 2) fully into the manifold assembly. 11.6 Connect all the upper pop studs (Fig 44, Item 1) on the cell corner flaps to the manifold assembly.

  • Page 96: Removing The Partial Non-Return Valve Assemblies

    Mattress Repair Nimbus/DFS Service Manual Removing the Partial Non-Return Valve Assemblies 12.1 Unzip the top cover on the CPR side of the mattress and fold it back. 12.2 Locate the partial non-return valve assemblies (Fig 47, Item 1) at the head end of the manifold assembly.

  • Page 97: Removing The Loop Sheet Assembly

    Nimbus/DFS Service Manual Mattress Repair Removing the Loop Sheet Assembly 14.1 Remove the top cover (Refer to Page 3, Section 2). 14.2 Disconnect all the lower pop studs (Fig 44, Item 3) on the cell corner flaps from the manifold assembly.

  • Page 98: Replacing The Elastic Loops (Nimbus 3/Dfs 3 Only)

    Mattress Repair Nimbus/DFS Service Manual Replacing the Elastic Loops (Nimbus 3/DFS 3 Only) Note: On Nimbus 3/DFS 3 mattresses the five cells at the foot end of the bed are retained by elastic loops which are held in position by plastic supports located into pockets on the underside of the loop sheet.

  • Page 99: Removing The Sensor Pad Assembly

    Nimbus/DFS Service Manual Mattress Repair Removing the Sensor Pad Assembly 17.1 Remove the top cover (Refer to Page 3, Section 2). 17.2 Disconnect the six pop studs (Fig 36, Item 1) which connect the cell loop sheet to the base cover at the head end of the bed.

  • Page 100: Removing The Cpr Unit

    Mattress Repair Nimbus/DFS Service Manual Removing the CPR Unit 19.1 Remove the top cover (Refer to Page 3, Section 2). 19.2 Disconnect the three pop studs (Fig 35, Item 1) which connect the cell loop sheet to the base cover at the foot end of the bed. 19.3 Unclip the pop stud (Fig 34, Item 1) from the heel protector (Fig 34, Item 2) at the foot end of the bed.

  • Page 101: Replacing The Release Button - Old Connector Version

    Nimbus/DFS Service Manual Mattress Repair Replacing the Release Button - Old Connector version Note: As a complete assembly, only the New Version of the connector is available. 21.1 Press the release button and disconnect the tubeset from the mattress manifold and the pump. 21.2 Refer to Figure 50.

  • Page 102: New Tubeset Assembly Components

    Mattress Repair Nimbus/DFS Service Manual New Tubeset Assembly Components There are two identical tubeset connectors on the tubeset assembly, connected together by a 5-way tubeset extrusion (Refer to Figure 51). Figure 51 - Standard and Extended Tubeset Assembly Table 29 - Tubeset Assembly Item Part Number Description...

  • Page 103: Repairing The Tubeset Connector Assembly

    Nimbus/DFS Service Manual Mattress Repair Repairing the Tubeset Connector Assembly 23.1 Remove and discard the adhesive label (Fig 51, Item 50) from the rear of the connector assembly (Refer to Figure 53). Note: A new label must always be fitted after any repair, since the old label is easily damaged and will not stick properly to the connector assembly after it has been re-assembled.
  • Page 104 Mattress Repair Nimbus/DFS Service Manual Push Connector Body downwards Front Cover Connector Body Insert a Flat-Bladed Screwdriver between the top of the Connector Body and the slot in the top Spring centre of the Front Cover Push Front Cover upwards Figure 55 - Removing the Front Cover 23.4 Remove the tubeset extrusion (Fig 51, Item 60) from the connector body (Fig 51, Item 10), as...
  • Page 105 Nimbus/DFS Service Manual Mattress Repair Note: If one connector body has already been fitted to the tubeset extrusion, make sure that both connector bodies are orientated as shown in Figure 52. 23.5.4 Push the end of the tubeset extrusion fully onto the outlet ports on the connector body, so that the end of the tube extrusion is flush with connector body.
  • Page 106 Mattress Repair Nimbus/DFS Service Manual Front Cover Rear Cover Figure 58 - Installing the Rear Cover 23.8 Install a new adhesive label (Fig 51, Item 50) onto the rear of the connector assembly (Refer to Figure 53 for the exact position). Note: A new label must always be fitted after any repair, since the old label is easily damaged and will not stick properly to the connector assembly after it has been re-assembled.

  • Page 107: Service Engineers Tubeset Assembly

    Nimbus/DFS Service Manual Mattress Repair Service Engineers Tubeset Assembly This is a special tubeset assembly for service engineers. It comprises a short 100mm length of tubeset extrusion, with a new-style 5-way tubeset connector at one end and four straight connectors at the other end. The centre tube in the extrusion has no straight connector fitted. Refer to Table 30 for the tubeset assembly parts list.

  • Page 108: Replacing The Tubeset

    Mattress Repair Nimbus/DFS Service Manual Replacing the Tubeset 25.1 Press the release button and disconnect the tubeset from the manifolds on the mattress and the pump. 25.2 Reconnect the new tubeset making sure that the connections are secure at each end. Note: The tubeset connectors of the Nimbus 3/DFS 3 have been colour coded blue so that the pump- mattress combination cannot be confused with the Nimbus 2/DFS 2.
  • Page 109 Nimbus/DFS Service Manual Mattress Repair Table 31 - Mattress Parts List Item Part Number Description 152057 Standard Cell - Standard 237057 Standard Cell - Narrow 152140 AST Cell - Standard 237140 AST Cell - Narrow 152073 Heel Protector 152318 Blank Connector (CPR Unit) 152301 Sheet Clip NMB441...
  • Page 110 Mattress Repair Nimbus/DFS Service Manual Figure 59 - CPR Unit Components Chap 4 Issue 2 Page 28 SER0001 April 2010...

  • Page 111: Replacing The Cpr O-Rings

    Nimbus/DFS Service Manual Mattress Repair Replacing the CPR O-Rings 26.1 Remove the CPR Unit from the manifold mattress (Refer to Page 18, Section 19). 26.2 Remove the screws (Fig 59, Item 10) and the backplate (Fig 59, Item 20) from the CPR Unit . 26.3 Replace the O-Ring (Fig 59, Item 50) on each connector as follows: 26.3.1...
  • Page 112 Mattress Repair Nimbus/DFS Service Manual 28.4 Remove the handle, the shaft, the pin, the cap and the spring (Fig 59, Items 190, 170, 180, 200 and 210). 28.5 If the handle (Fig 59, Item 190) or the shaft (Fig 59, Item 170) need to be replaced then they need to be replaced as a sub assembly together with the pin (Fig 59, Item 180).

  • Page 113: Replacing The Cpr Manifold Gasket

    Nimbus/DFS Service Manual Mattress Repair Replacing the CPR Manifold Gasket 29.1 Carefully remove the screws (Fig 60, Item 220). Note: Do not apply pressure on the screws when removing. If pressure is applied, the brass inserts can be pushed out of the case, inside the CPR Unit. If a brass insert is lost inside the case, the backplate must be removed to retrieve it.
  • Page 114 Mattress Repair Nimbus/DFS Service Manual Table 32 - CPR Unit Component Parts List Item Part Number Description 152077 CPR Module Asembly (Nimbus 2/DFS 2, except Germany) 152152 CPR Module Asembly (Nimbus 2 German Only) 152192 CPR Module Asembly (Nimbus 3/DFS 3, except Germany) 152202 CPR Module Asembly (Nimbus 3 German Only) FAS180...

  • Page 115: Alternating Head Cells

    Nimbus/DFS Service Manual Mattress Repair Alternating Head Cells The modification can be applied in two configurations: Configuration 1 All three head cells are converted from static pressure to alternating pressure. Configuration 2 The top head cell remains as a static pressure cell. The second and third cells are converted from static pressure to alternating pressure.
  • Page 116 Mattress Repair Nimbus/DFS Service Manual 31.3 Remove the straight connectors from cell valves 1 to 5 (Figure 62). Figure 62 - Remove the Straight Connectors (Configuration 1) 31.4 Fit the ‘T’ and elbow pieces to the cell valves 1 to 5 as shown in Figure 63. Figure 63 - Fit ‘T’...
  • Page 117 Nimbus/DFS Service Manual Mattress Repair 31.5 Connect the tubes to the valves as shown in Figure 64. Figure 64 - Connect the tubes (Configuration 1) 31.6 Remove the straight connectors from the manifold outlets that feed the top five cells of the mattress.
  • Page 118 Mattress Repair Nimbus/DFS Service Manual Installing the Alternating Head Cell Modification - Configuration 2 Note: Not all parts of the kit are used if only two cells alternate as in Configuration 2. 32.1 Inflate the mattress. Unzip the top cover and lay it back, clear of the head end of the mattress. 32.2 Disconnect the top six manifold pop studs to reveal the six cell valves (Figure 61).
  • Page 119 Nimbus/DFS Service Manual Mattress Repair 32.4 Fit the ‘T’ and elbow pieces to the cell valves 2 to 5 as shown in Figure 67. Figure 67 - Fit ‘T’ and Elbow Pieces (Configuration 2) 32.5 Connect the tubes to the valves as shown in Figure 68. Figure 68 - Connect the tubes (Configuration 2) Issue 2 Chap 4...
  • Page 120 Mattress Repair Nimbus/DFS Service Manual 32.6 Remove the straight connectors from the manifold outlets that feed the 2nd to 5th cells of the bed from the top. Connect the two ‘T’ pieces to the manifold outlets. Fit blanking plugs to the 2nd and 3rd top manifold air outlets (Figure 69).

  • Page 121: Nimbus 3 Professional Mattress

    Nimbus/DFS Service Manual Mattress Repair Nimbus 3 Professional Mattress Figure 70 and Table 34 detail the parts list for the Nimbus 3 Professional mattress assemblies. Many components are common to the standard mattress to which assembly/disassembly instructions may be referred. The major differences are the addition of the Profile Control Valve and Vent Valves.
  • Page 122 Mattress Repair Nimbus/DFS Service Manual CPR/Transport Control Foot End Head End 170 230 Figure 70 - Nimbus 3 Professional Mattress Parts List Chap 4 Issue 2 Page 40 SER0001 April 2010...
  • Page 123 Nimbus/DFS Service Manual Mattress Repair Table 34 - Nimbus 3 Professional Mattress Parts List Item Part Number Description 412001ADV Nimbus 3 Professional Mattress Assembly (Advantex Cover) 412001DAR Nimbus 3 Professional Mattress Assembly (Dartex Cover) 412001EVE Nimbus 3 Professional Mattress Assembly (Event Cover) 412080 Nimbus 3 Professional Advantex Cover 412082...
  • Page 124 Mattress Repair Nimbus/DFS Service Manual Connector Manifold Grommet 5th Cell 4th Cell Rear Cover Figure 71 - Disconnecting the 4th Cell from the Rear Cover of the Profile Control Valve Shaped End of Rotor / Stator Shaft Rotor / Stator Figure 72 - Removing the Profile Valve Control Knob Chap 4 Issue 2...

  • Page 125: Removing The Profile Control Valve

    Nimbus/DFS Service Manual Mattress Repair Removing the Profile Control Valve In addition to the rotor, stator and cosmetic knob on the profile control valve, the spares item for the replacement profile control valve includes the following items: • rear cover (Fig 73, Item 10) •...
  • Page 126 Mattress Repair Nimbus/DFS Service Manual Figure 73 - Rear Cover of the Profile Control Valve Table 35 - Profile Control Valve - Rear Cover Parts List Item Part Number Description 412307 Rear Cover 412328 Connector 627403 Nut, M14 x 1.5mm Plastic 627343 Dome Nut, M6 Plastic 412110...
  • Page 127 Nimbus/DFS Service Manual Mattress Repair Figure 74 - Tube Connections on the Profile Control Valve Table 36 - Profile Control Valve - Tube Parts List Item Part Number Description 412111 Tube Assembly - Alternating Feed 412113 Tube Assembly - Static Feed 412115 Tube Assembly - Head Feed 412306...

  • Page 128: Installing The Profile Control Valve

    Mattress Repair Nimbus/DFS Service Manual Installing the Profile Control Valve 35.1 Insert the four plastic screws (Fig 74, Item 50) through the holes in the base cover assembly (Fig 74, Item 80) and manifold assembly (Fig 74, Item 70), from the outside of the mattress. 35.2 Install the mounting plate (Fig 74, Item 40) over the plastic screws (Fig 74, Item 50).
  • Page 129 Nimbus/DFS Service Manual Mattress Repair 35.8 Install the large plastic nut (Fig 73, Item 30) onto the connector (Fig 73, Item 20) on the rear cover of the profile control valve. Gently tighten using a 22mm spanner. 35.9 Install the Profile Valve Control Knob as follows: 35.9.1 Refer to Figure 72 and 73.

  • Page 130: Removing The Knob And Rotor On A Vent Valve

    Mattress Repair Nimbus/DFS Service Manual Removing the Knob and Rotor on a Vent Valve There are 16 vent valves in the mattress, and the body of each vent valve is secured to the manifold assembly during the manufacture of the mattress, and can not be removed in the field. The following two procedures describe how to remove just the knob and internal rotor from the body of a vent valve: •...
  • Page 131 Nimbus/DFS Service Manual Mattress Repair 36.1.4 When the cell is removed from the vent valve body, the fork in the end of the vent valve rotor is visible . Vent Valve Body Cell Grommet Fork in the end Manifold Assy of the Vent Valve Rotor Figure 79 - Vent Valve and Cell Grommet...
  • Page 132 Mattress Repair Nimbus/DFS Service Manual 36.2.3 Make sure that the vent valve is in the fully open or fully closed position (Refer to Figure 81). Vent Valve CLOSED Vent Valve OPEN Figure 81 - Vent Valve Positions 36.2.4 To remove the knob and rotor from the vent valve body, carry out the following procedure (Refer to Figure 77 and 82): 36.2.4.1 Hold the vent valve knob with one hand.

  • Page 133: Installing The Knob And Rotor On A Vent Valve

    Nimbus/DFS Service Manual Mattress Repair Installing the Knob and Rotor on a Vent Valve Refer to Figures and for installing the vent valve knob and rotor. 37.1 Put the large grommet in the side of the base cover assembly onto the outer end of the vent valve body.
  • Page 134 Mattress Repair Nimbus/DFS Service Manual Chap 4 Issue 2 Page 52 SER0001 April 2010...

  • Page 135: Troubleshooting

    Nimbus/DFS Service Manual Troubleshooting CHAPTER 5 TROUBLESHOOTING Troubleshooting Table The following table contains fault symptoms, their possible causes and suggests steps to rectify the problem. Where possible, reference is made to the relevant repair Chapters. Fault Possible Cause Remedy Pump fails to Pump not connected to power supply.
  • Page 136 Troubleshooting Nimbus/DFS Service Manual Fault Possible Cause Remedy Mattress Mattress in TRANSPORT Return to NORMAL mode. mode. CPR assembly not fully closed. Reset the CPR. Cell leak. Trace and replace. (Chapter 4, Page 11, Section 7) Leak in non-return valves. Replace.
  • Page 137 Nimbus/DFS Service Manual Troubleshooting Fault Possible Cause Remedy Power Fail Alarm Pump Battery discharged. Leave unit on for 24 hours to recharge. Battery failure. Replace battery (Chapter 3, Page 61, Section 49) Power Fail Alarm Pump Faulty Mains/Power Switch. Check and replace. With Unit Off (Only applies to early versions with more than one PCB)
  • Page 138 Troubleshooting Nimbus/DFS Service Manual Chap 5 Issue 2 Page 4 SER0001 April 2010...

  • Page 139: Chapter 6 Testing

    Nimbus/DFS Service Manual Testing CHAPTER 6 TESTING Pump Flow, Pressure and Function Test This procedure must be carried out after a service or major repair of a pump. To test/calibrate the pump unit correctly, the following equipment is required: Table 37 - Pump Flow, Pressure and Function Test Equipment Equipment Part Number Dual Pressure Gauge (0-160 mm/Hg)/ flow meter (0-25 ltr/min)

  • Page 140: Power Fail Alarm Check

    Testing Nimbus/DFS Service Manual Power Fail Alarm Check Switch the pump off at the mains/power socket, leaving the pump switched ON. The pump should respond by illuminating the flashing RED TRIANGLE and the POWER message while sounding an AUDIBLE ALARM. Push the MUTE button and the audible alarm should be silenced.

  • Page 141: High/Low Pressure Setpoint Checks And Mute Mode Check Using The Psion Organiser

    Nimbus/DFS Service Manual Testing High/Low Pressure Setpoint Checks and Mute Mode Check using the Psion Organiser Psion Organiser Setup Refer to Page 11, Section 6 to set up the Psion Organiser. High Pressure Switch Setpoint Check Select Inputs from the Psion menu. The Psion will now display: Slowly occlude the tubeset loop between ports 4 and 5 and record the pressure on the manometer at which the Psion display changes to: Low Pressure Switch Setpoint Check...

  • Page 142: Mute Mode Check

    Testing Nimbus/DFS Service Manual Mute Mode Check Press any key on the Psion, except for Q. The Psion will now display: Check the MUTE mode is set correctly for the country of use (0 for the UK and 1 for the rest of the world).

  • Page 143: High Pressure Switch Setpoint Check

    Nimbus/DFS Service Manual Testing High Pressure Switch Setpoint Check Click on Refresh at the bottom of the Sensor - Status column, and the High Pressure - Status should be set to OFF. Slowly occlude the tubeset loop between ports 4 and 5, and record the pressure on the manometer at which the High Pressure - Status changes to ON.

  • Page 144: Static Mode Pressure Tests

    Testing Nimbus/DFS Service Manual Static Mode Pressure Tests Select Test from the Psion menu. Wait (for up to 5 minutes) until the Psion display changes from: Record the manometer reading for coil 1, with the comfort control set to minimum and maximum settings.

  • Page 145: Dynamic Mode Pressure Tests

    Nimbus/DFS Service Manual Testing 4.10 If all the tests have been completed OK, press N on the Psion. The Psion will now display: 4.11 Press N again on the Psion. The Psion will display: 4.12 Press Y on the Psion. Wait (up to 3 minutes) until the display changes to: Dynamic Mode Pressure Tests 4.13 Connect duty outlet port to the pressure gauge.

  • Page 146: Check Pump Serial Number

    Testing Nimbus/DFS Service Manual 4.19 Press any key, except Q on the Psion. The display will change to: 4.20 Connect the pressure gauge/flow meter to Port 2. 4.21 Close the restrictor. Record the manometer reading for Port 2, coils 1 & 3, with the comfort control set to minimum and maximum settings.

  • Page 147: Static Mode Pressure Tests

    Nimbus/DFS Service Manual Testing Static Mode Pressure Tests Click on Static Test to start the test running. A dialog box with Switching coils off, followed by Refreshing sensor status is displayed. Wait for the rotary valve to reach the crossover position, at which time the rotary valve is switched off.

  • Page 148: Check Pump Serial Number

    Testing Nimbus/DFS Service Manual 5.28 Click OK on the dialog box. 5.29 Coils 1 and 3 are switched off, and then coils 2 and 4 are switched on. The dialog box Rotor in Port 1 position. Press OK for Port 2? is displayed. 5.30 Close the restrictor or reconnect to the pressure gauge.

  • Page 149: Psion Organiser Setup

    Nimbus/DFS Service Manual Testing Psion Organiser Setup Switch the Psion on and select which type of pump is to be tested from the Psion menu. If at any time the Psion indicates the following message, then press the STATIC and MUTE buttons together on the pump.
  • Page 150 Testing Nimbus/DFS Service Manual If at any time during the testing, the infrared data transmission status indicates Communication unsuccessful , then press the STATIC and MUTE buttons together on the pump. Figure 87 - Information Tab on the PC connected to the IR Interface IR Interface Passwords: •...

  • Page 151: Electrical Testing

    Nimbus/DFS Service Manual Testing Electrical Testing To test and calibrate the pump unit correctly, the following equipment is required: Table 39 - Electrical Test Equipment Equipment Insulation resistance tester (Megger) 500 Vdc Portable appliance tester Multimeter/Continuity tester Dielectric strength tester (Flash tester) 3.0 kVac with current limit Electrical Safety Checks - Class I There are several electrical safety checks that must be carried out after breakdown repairs and servicing.

  • Page 152: Mattress Pressure And Function Test

    Testing Nimbus/DFS Service Manual 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. This equipment should not be used if you have a hearing aid or pacemaker fitted, due to the possibility of electromagnetic disturbance.

  • Page 153: Technical Specification

    Nimbus/DFS Service Manual Technical Specification CHAPTER 7 TECHNICAL SPECIFICATION PUMP Model: Nimbus II, Nimbus 3, Nimbus 3 Professional, DFS 2, DFS3 Input Voltage and Frequency: Part No. Marking: Territory Input Voltage and Frequency 151033 120 V / 60 Hz 151010 151012 German 151014...

  • Page 154: Accessories

    Technical Specification Nimbus/DFS Service Manual SYMBOLS Power Do not dispose of Alternating Current Dangerous voltage Disconnects from (Off) in domestic refuse the mains supply Power Refer to Refer to the User Fuse Connects to the accompanying (On) Manual mains supply documents With respect to electric shock, fire...

  • Page 155: Mattress

    Nimbus/DFS Service Manual Technical Specification MATTRESS Nimbus 3 Standard Width Narrow Width Standard Cover 152010DAR 237010 ® 152010ADV not applicable Advantex Cover Length 2085 mm (82”) Height: 215 mm (8.5”) Width: 890 mm (35”) 800 mm (31.5”) Weight: 11.5 kg (25.3 lb.) 10.3 kg (22.7 lb.) Cell Material: Polyurethane...

  • Page 156: Cover Specification

    Technical Specification Nimbus/DFS Service Manual COVER SPECIFICATION Standard Cover ® ® Feature Advantex eVENT Fabric ® (Dartex) Removable Cover Moisture Vapour 12 times higher Permeable Air Permeable Low Friction 18% lower 20% lower Water Resistant / Repellent Infection Material coating is Material coating is INERT MATERIAL Control...

  • Page 157: Cleaning Symbols

    Nimbus/DFS Service Manual Technical Specification CLEANING SYMBOLS Wash at 71°C (160°F) for a Tumble dry at 80-85°C. minimum of 3 minutes Wash at 95°C (203°F) for a Tumble dry at 130°C minimum of 15 minutes Wash at 65°C (149°F) for a Wipe surface with damp cloth minimum of 10 minutes Use solution diluted to 1000 ppm of Available...
  • Page 158 Technical Specification Nimbus/DFS Service Manual Chap 7 Issue 2 Page 6 SER0001 April 2010...

  • Page 159: Chapter 8 Parts List

    Nimbus/DFS Service Manual Parts List CHAPTER 8 PARTS LIST Pump Assembly Parts List Part Number Description Fig - Item 151001 Nimbus 2 Pump Assembly (UK) 151002 Nimbus 2 Pump Assembly (German) 151003 DFS 2 Pump Assembly (USA) 151004 Nimbus 2 Pump Assembly (Euro) 151005 Nimbus 2 Pump Assembly (French) 151006...
  • Page 160 Parts List Nimbus/DFS Service Manual Part Number Description Fig - Item Front and Rear Cases 151052 Rear Case Assembly 4-10 151308 • Rear Case 5-10 151311 • Filter Housing Plate 5-20 151312 • Filter Felt 5-30 FAS179 • Screw, 2.5mm (dia) x 10mm Pan Head 5-40 507413 •...
  • Page 161 Nimbus/DFS Service Manual Parts List Part Number Description Fig - Item 151466 Nimbus 3 (Japan 60Hz) - (Serial Numbers beginning 151) 151468 DFS 3 (USA) - (Serial Numbers beginning 151) LAB320 Nimbus 3/DFS3 (All variants) (All Serial Numbers excluding those beginning 151) Double Compressor Assembly 165076 Double Compressor Assembly - 220V (UK, Euro)
  • Page 162 Parts List Nimbus/DFS Service Manual Part Number Description Fig - Item FAS093 Screw, M4 x 12mm Pan Head 6-80 FAS095 Screw, M4 x 10mm Pan Head 6-120 FAS144 Nut, M4 Full 6-60 FAS178 Nut, 8/32 UNC 6-140 FAS053 Washer, M4 Anti-Vibration 6-70 6-90 6-160...
  • Page 163 Nimbus/DFS Service Manual Parts List Part Number Description Fig - Item Display Panel PCB and Front Panel 151550 Display Panel PCB Assembly (New Style) 240V 16-10 (UK, EURO) 151549 Display Panel PCB Assembly 120V 16-10 (USA, Japan 50 & 60Hz) 151457 Battery, Rechargeable 33-10...
  • Page 164 Parts List Nimbus/DFS Service Manual Part Number Description Fig - Item Mains/Power Items 151353 Mains/Power Switch, 240V 28-10 151121 Mains/Power Filter Assembly 17-60 151119 Fuseholder Assembly - Live (Brown) - (Hard wired pumps) 17-20 151070 Fuseholder Assembly - Live (Brown) - (Pumps with mains/ 22-20 power inlet socket) CAS011...
  • Page 165 Nimbus/DFS Service Manual Parts List Part Number Description Fig - Item 5-way Manifold 151480 5-way Barbed Manifold 9-10 151304 5-way Manifold Gasket 9-20 151476 Manifold Connector - Braced Grey (Nimbus 2 and DFS 2) 9-30A 151471 Manifold Connector - Braced Blue (Nimbus 3 and DFS 3) 9-30A FAS041 Screw, M3 x 20mm Csk Head...

  • Page 166: Mattress Assembly Parts List

    Parts List Nimbus/DFS Service Manual Mattress Assembly Parts List Part Number Description Fig - Item 152001 Mattress Assembly Standard - Nimbus 2 152002 Mattress Assembly Standard - Nimbus 2 German 152003 Mattress Assembly Standard - DFS 2 152010 Mattress Assembly Standard - Nimbus 3 152012 Mattress Assembly Standard - Nimbus 3 German 152013...
  • Page 167 Nimbus/DFS Service Manual Parts List Part Number Description Fig - Item 152318 • Blank Connector (CPR Unit) 152301 • Clip NMB441 • Soft Foam Sheet 152113 • Hard Foam Sheet 152114 • Sensor Pad (Auto-Matt) 152383 • Small Hard Foam Sheet 152173 •...
  • Page 168 Parts List Nimbus/DFS Service Manual Part Number Description Fig - Item 412068 • Automatt - N3P 412073 • Heel Protector - N3P 627051 • CPR Assy - Prone 627061 • Cell Assy Standard - Prone 70-130 627062 • Cell Assy Short - Prone 70-140 627063 •...
  • Page 169 Nimbus/DFS Service Manual Parts List Part Number Description Fig - Item CPR Assembly 152077 CPR Module Assembly (Nimbus 2/DFS 2, except Germany) 152152 CPR Module Assembly (Nimbus 2 German Only) 152192 CPR Module Assembly (Nimbus 3/DFS 3, except Germany) 152202 CPR Module Assembly (Nimbus 3 German Only) FAS180 •...
  • Page 170 Parts List Nimbus/DFS Service Manual Part Number Description Fig - Item Alternating Head Cells Modification Kit 152208 Alternating Head Cells Modification Kit 152418 • ‘T’ Pieces (polypropylene) 152419 • Elbow Pieces (polypropylene) 152420 • Blanking Plugs (acetyl) 152209 • Lengths of PVC Clear Tubing 152901 •...
  • Page 171 Nimbus/DFS Service Manual Service Contact Details CHAPTER 9 SERVICE CONTACT DETAILS AUSTRALIA GERMANY SPAIN ArjoHuntleigh Pty Ltd ArjoHuntleigh GmbH ArjoHuntleigh Ibérica S.L. PO Box 330 Peter-Sander-Strasse 10 Carratera de Rubi, 88, Hamilton Hill DE-55252 MAINZ-KASTEL planta-A1 Western Australia 6963 T: +49 6134 1860 Sant Cugat del Valles T: +61 8 9 337 4111 F: +49 3167 186 160...

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