ESIE17-08
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Part 3. Repair
3.3. Unit specific repair procedures
Page 86
15/11/18
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Version 1.1
R32 Sky-Air RZAG-M
Figure 3-20: Removing expansion valve motor
3.3.2.11. Replacing solenoid valve
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.
7. Remove the solenoid valve coil (refer to
"Replacing solenoid valve coil" on page 88
8. Connect a nitrogen hose to the outdoor suction service port.
9. Attach a hose with core-depressor to allow the release of the nitrogen.
PROCEDURE
Removal
1. Cut the 2 solenoid valve pipes (1).
2. Remove the solenoid valve (2).
3. Supply nitrogen to the piping circuit.
4. Using an oxygen acetylene torch, heat the 2 solenoid valve pipes (1).
5. When the solder material is liquid, pull the 2 solenoid valve pipes (1).
6. Cut the nitrogen supply when the piping has cooled down.
1. Expansion valve motor
2. Expansion valve
C
AUTION
The maximum applied Nitrogen pressure must not exceed 0.02 MPa.
1
2
