Rheem 55027500 Service Instructions Manual page 42

Receiver/Filter Drier (Procedure 15)
Personal Protective Equipment should be worn when conducting step 2 of
this procedure to reduce the risk of electric shock. Refer to Rheem Safety
Procedure on electrical testing.
1. Isolate the power to the water heater.
2. Remove the access cover and confirm with a multi-meter between Active and
Neutral at the terminal block that voltage is not present.
3. Remove the air inlet louver. (Refer to Procedure 8)
4. Undo the compression nuts on the inlet and outlet of the receiver/filter drier.
5. Cut the cable tie and remove the receiver/filter drier.
6. Fit the replacement receiver/filter drier, secure using a cable tie and retighten the
compression fittings.
7. Pressurise system to 3000kPa and conduct a leak test.
8. Evacuate system to 100 microbar (30") for a period of at least 30 minutes.
9. Recharge system with the correct refrigerant. Refer to "Specifications – Refrigeration
System" table on page 3.
10. Restore power. The refrigeration plant should commence operation.
11. Refit air inlet louver and jacket top.
Compressor and Accumulator (Procedure 16)
Personal Protective Equipment should be worn when conducting step 2 of
this procedure to reduce the risk of electric shock. Refer to Rheem Safety
Procedure on electrical testing.
1. Isolate the power to the water heater.
2. Remove the access cover and confirm with a multi-meter between Active and
Neutral at the terminal block that voltage is not present.
3. Remove the evaporator shroud and fan motor assy. (Refer to Procedure 10 Steps 1 -
6)
4. Remove the pipe insulation to expose pipe work at the compressor and accumulator.
Un-braze the discharge pipe-work from the compressor and the suction line from the
accumulator.
5. Disconnect the wiring to the compressor, and unclip the thermal cut out (overload)
6. Remove the 3 nuts retaining the compressor to the chassis and lift the compressor and
accumulator clear.
7. Fit and secure the replacement compressor and accumulator, braze pipe work and
reconnect wiring and overload to the compressor.
8. Replace the receiver/filter drier. (Refer to Procedure 16 – steps 4 to 6)
9. Pressurise system to 3000kPa and conduct a leak test. Refit and secure pipe work
insulation.
10. Evacuate system to 100 microbar (30") for a period of at least 30 minutes.
11. Recharge system with the correct refrigerant. Refer to "Specifications – Refrigeration
System" table on page 3.
12. Refit the evaporator shroud and fan motor assembly and refrigeration section jacket.
13. Restore power. The refrigeration plant should commence operation.
14. Refit air inlet louver and jacket top.
TM017 Rheem Air Sourced Heat Pump Service Instructions REV: C
Date of Issue: 5/11/05
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