Rheem 325 II Series Service Instructions Manual page 68

4. Remove the terminal cover from the compressor, mark and disconnect the wiring.
5. Remove the earth wire from the earth connection tab on the compressor body.
6. Remove the pipe insulation from the discharge line.
7. Remove the compressor sensor from the discharge line.
8. Recover the refrigerant from the sealed refrigeration system.
9. Disconnect the discharge pipework from the compressor and the suction pipework from
the accumulator.
10. Remove the 3 bolts retaining the compressor and remove the compressor through the
rear of the module.
11. Install replacement compressor and braze pipework, being sure to nitrogen purge.
12. Reconnect compressor wiring and refit the terminal cover.
13. Refit the compressor sensor to the discharge line.
14. Replace the filter drier. Follow steps 4 and 5 of the „Filter Drier‟ procedure on page 67.
15. Pressurise the refrigeration system with nitrogen to 2500kPa and conduct a leak test.
16. Refit and secure pipework insulation to the discharge line.
17. Refit compressor insulation. NOTE: The insulation around the compressor should sit on
the chassis and wrap around the mounting feet.
18. Evacuate system to 500 microns of mercury (65Pa absolute) for at least 30 minutes.
19. Recharge the system with the correct refrigerant. Refer to the Specifications – Heat
Pump Module table on page 7.
20. Refit the heat pump outer jacket and refit/re-install the heat pump module, restore
power and allow the heat pump to run for at least 10 minutes – confirm operating
pressures are acceptable (refer to page 54).
21. Isolate power and remove gauges.
22. Check the flexible hose connections for water leaks.
23. Refit the heat pump module access cover and restore power supply to the water
heater.
Refrigerant High Pressure Switch
WARNING: Heat must NOT be applied to plastic components. When brazing
pipework as indicated in this procedure, a heat shield must be used to
prevent the possibility of damage.
1. Remove the heat pump module. Refer to the „Heat Pump Module Removal‟ procedure
on page 62.
2. Remove the heat pump module outer jacket. Follow steps 6 – 14 of the „Outer Jacket‟
procedure on page 62.
3. Remove the pipe insulation from the discharge line.
4. Remove the compressor sensor from the discharge line.
5. Recover the refrigerant from the sealed refrigeration system.
6. Disconnect the refrigerant high pressure switch from the discharge line.
7. Braze the replacement refrigerant high pressure switch into place, being sure to
nitrogen purge.
TM077: 325 & 410 Series II Heat Pump Service Instructions
Rev 00: Issued April 2014
This document is stored and maintained electronically by
(45 minutes*)
Service. All printed copies are deemed uncontrolled.
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