ESIE17-08
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Part 3. Repair
3.3. Unit specific repair procedures
15/11/18
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Version 1.1
Page 89
R32 Sky-Air RZAG-M
3.3.2.13. Replacing high pressure switch
PRELIMINARY ACTIONS
1. Switch off the Daikin unit via the user interface.
2. Switch off the Daikin unit with the field supplied circuit breaker.
3. Remove plate work when required (refer to
4. Recover the refrigerant (refer to
"Refrigerant repair procedures" on page 61
).
5. Connect a nitrogen hose to the outdoor suction service port.
6. Attach a hose with core-depressor to allow the release of the nitrogen.
PROCEDURE
Removal
1. Unplug the high pressure switch connector.
2. Cut the tie wrap.
3. Cut the high pressure switch S1PH pipe.
4. Remove the high pressure switch (1).
5. Supply nitrogen to the piping circuit.
6. Heat the pressure switch pipe using an oxygen acetylene torch.
7. When the solder is liquid, pull the pressure sensor pipe.
8. Cut the nitrogen supply when the piping has cooled down.
Figure 3-23: Removing high pressure switch
C
AUTION
The maximum applied Nitrogen pressure must not exceed 0.02 MPa.
1. High pressure switch
3. Compressor discharge thermistor
2. Low pressure switch
1
3
2
