Park House Healthcare Delta Plus User manual

DELTA PLUS
Bariatric Mattress Replacement System
Service Manual

1
Index Page
1 PRODUCT VIEW ILLUSTRATIONS
1.1 Front view 2
1.2 Side view 2
1.3 Rear view 3
2 QUICK OPERATING INSTRUCTION 4
3 SERVICE INSTRUCTION 5
4 ALL PARTS ILLUSTRATION 6
5 OPERATING, TROUBLESHOOTING & SERVICE OVERVIEW
5.1 Service checklist 7
5.2 Service repair procedures 8
6 PUMP ASSEMBLY
6.1 Pump exploded view – Diagram 1 16
6.2 Base case exploded view – Diagram 2 17
6.3 Side panel assembly – Diagram 3 18
6.4 Control panel PCB – Diagram 4 19
6.5 Spare parts 20
7 TOOLS 22

2
1 Product View Illustration:
1.1 Front View
Side View I
 Side panel
assembly
Front View
 Control panel
1.2 Side View

3
Side View II
 Air outlet quick
connector assembly
1.2 Rear View
Rear View
 Pump hanger 2sets
 Air intake (filter)
 Enclosure screws x 6
 Brief Operating
Instructions

4
2 Brief Operating Instructions

5
3 Service Instruction:
Instruction for all general service repairs:
Warning:
Unplug the power cord from the mains and ensure that no
electrical current is detected prior to repair.
 Attention:
Before commencing the repair please check the following.
 CPR is fastened securely, See Fig A
 For all the required replacement parts, please contact Park House
Healthcare Ltd for the part number. Once the spare part is obtained,
proceed to the relevant section of this service manual so that the repair can
be carried out.
Fig_ A

6
4 Internal Parts Illustration

7
5 Troubleshooting and Service Overview
5.1 Service checklist:
Fault Description Possible Causes & Solutions Service Repair
Procedure
Check whether the display panel or
wiring terminals are disconnected.
Solution - Replace the control panel.
Check if the pump is in the panel lock-out
mode?
Unable to input
operating
commands
Solution - Press and hold the panel lock
button for more than 3 sec to unlock.
T1
Check that the power switch is on /
working or if the fuses have blown
Solution - Replace the fuse T3
No Power
Solution - Replace the power switch. T2
Check the control panel, power switch,
fuses, and compressor assembly
Solution - Replace the fuse T3
Solution - Replace the power switch T2
Solution - Replace the compressor T5
Compressor is not
functioning
Solution - Replace the Control Panel T1
Perform the compressor pressure test
and check tubing connections for any
leaks
T7
Solution – Refit / replace tubing
connectors
Solution - Replace the control PCB T1
Air Pressure is
incorrect
Solution - Replace the compressor T5
Check the connections between the
compressor, air tubing and timer. Check
for faulty timer, control panel or
compressor
Solution – Refit / replace tubing
connectors
Solution - Replace the timer T6
Solution - Replace the compressor T5
Not alternating
Solution - Replace the control panel T1

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Fault Description Possible Causes & Solutions Service Repair
Procedure
Check the timer and control panel.
Solution - Replace the timer. T6
Mattress unable to
lower the air
pressure.
Solution - Replace the control panel. T1
Conduct a pump pressure test T7Incorrect pressure
detected
Solution - Replace the control panel. T1
Dirty air filter Replace the air filter T4

9
5.2 Service Repair Procedures
T1 Replace Mylar and control panel assembly
Check
1. If all the key components are functioning normally, such as the compressor,
timer and mains lead, but problems still exist with the air pressure (i.e. LED
light is not lit or press key damaged), replace the control panel assembly.
2. Verify the connection of both power and control panel terminals is tight, if any
disconnected terminals are found, refer to diagram 4 for instructions on how to
reconnect
1. Remove the control panel from the PCB supporting poles
2. Remove the control panel terminals J1, J2, P1, P2, P3 and P4.
Refer to diagram 4
3. Replace the new control panel PCB
4. Plug-back the control panel terminals J1, J2, P1, P2, P3 and P4.
Refer to diagram 4 if necessary.
5. Position the PCB back to the supporting poles and test all operating functions
Diagram 4

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T2 Replacing the power switch
Check
1. Mark the connecting power lead wires (as these need to be reinserted) and then
remove once they are marked.
2. Connect a multi-meter as shown in diagram 3
3. Turn on the power and check that the switch is functional
4. Switch on the multi-meter and check it shows Ω=0 position. Turn the power OFF
and check it shows Ω=∞(infinity)
5. If the multi meter doesn’t show above then replace with a new power switch
Procedure
1. Remove the side panel assembly
2. Remove the power switch wiring terminals
3. Remove the power switch by squeezing and pressing forward.
4. Replace with the new power switch
5. Check that the new power switch is snapped into the socket securely making
sure of the correct orientation. Refer to diagram 2
6. Install the power wiring back to the terminal. Refer to diagram 1
7. Insert the side panel assembly back to its original position.
When fitted test the power switch to ensure it is working correctly
Diagram 1
 Meter
 Power Switch
Diagram 2
Diagram 3

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T3 Replacing fuses
Check
1. Unscrew the fuse box with appropriate tools
2. Check the fuse to determine whether there has been any blackening or broken
fuse lines
3. Replace with new fuse if damaged.
Procedure
1. Remove the fuses with appropriate tooling
2. Replace with the new fuses
3. Use an appropriate screwdriver to screw the fuses back into the side panel
assembly
4. Before switching the power back on, use a multi-meter to test for any short
circuit that could cause further damage. Once the problem is resolved turn the
system back on.
Normal
Defective

12
T4 Replacing the air filter
Check
1. If the filter is dirty and decide if its condition will affect the performance of the
unit. The blacker the filter material, the dirtier the filter is.
Procedure
1. Remove the air filter cap from the pump enclosure.
2. Remove the air filter from the enclosure.
3. Insert new air filter unit.
4. Insert air filter sponge washer onto the air filter prior re-inserting back to
enclosure.
5. Replace the air filter cap.

13
T5 Replacing the compressor
Check
1. Turn on the AC power and check the air flow is above 8 lpm and the pressure is
above 150 mmHg
2. If the compressor fails to meet the air flow or pressures stated, please replace
the compressor
Procedure
1. Remove both the air tubing and wiring connecting to the compressor
2. Remove both pump wiring leads from the control panel PCB
3. Use appropriate tools to unscrew “U-Shape compressor bracket” by twisting
open the screw washer
4. Pull out the compressor rubber tips from the U-Shape bracket, each
compressor has total of 8 dampening tips
5. Inset new compressor assembly
6. Rubber tips must insert and pass through the U-Shape bracket to ensure
proper suspension, refer to diagram 5_1
7. Secure the finished compressor assembly, including washer, back to the
enclosure base
8. Re-connect the compressor lead wires and tubing back to original position

14
T6 Replacing the timer motor assembly
Check
1. Connect the timing motor power to AC source (to PCB)
2. Switch on the power and watch to see if timing motor rotates. If it does not
rotate then consider it as abnormal operation
3. Timing motor calibration confirmation
3.1 Use a multi meter and turn dial to symbol use two probes and insert into
positions A and B, see diagram 6_1
3.2 When the timing motor rotates, the pointing arrow found at the air chamber
plate will touch the micro-switch as OPEN position (If untouched, it is short
circuit, and the multi-meter will sound-off)
3.3 If the timing motor does not operate correctly, replace the timer motor
assembly.
Procedure
1. Disconnect the air tubing, wires and remove screws fixing the timer motor
2. Replace with new timer motor assembly
3. One screw inserted into the bracket and secure to the enclosure base, while
the other insert to the timing motor assembly and screw to the enclosure base,
refer to diagram
4. Reconnect air tubing, and lead wires, refer to diagram 1

15
T7 Pump air pressure performance test
Procedure
1. By use of the diagram below, assemble the testing equipment and verify all the
connections are air-tight.
2. Switch on the pump and wait for the self-examination procedure to finish.
3. Switch the pressure knob to “min pressure”
4. The green LED light will light up when the correct pressure is reached.
5. Check that the pressure has reached the required level.
6. If an incorrect pressure is detected, follow the problem checklist below.
A. Leaks found from the air tubing?
B. Incorrect compressor performance? See compressor assembly.
C. Air tubing to the sensor has become disconnected or there are loose
fittings?
7. If faults persist after above the checks have been carried out, proceed to the
PCB replacement section found in T1.
AB
CD

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6 Pump assembly
6.1 Pump exploded view diagram
Dia
g
ram 1

17
6.2 Base exploded view diagram
Dia
g
ram 2

18
6.3 Side panel assembly exploded diagram
Dia
g
ram 3

19
6.4 Control panel PCB diagram
Dia
g
ram 4