Replacing High Pressure Switches - Daikin SA R32 Sky-Air RZAG-L Service Manual

ESIE16-03B | Part 3. Repair

3.3.2.13. Replacing high pressure switches

Removal
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
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. Unplug the high pressure switch connector (3).
8. Cut the tie wrap (4).
9. Cut the high pressure switch S1PH pipe (5).
10. Remove the high pressure switch (1 or 2).
C
AUTION
The maximum applied Nitrogen pressure must not exceed 0.02 MPa.
11. Supply nitrogen to the piping circuit.
12. Heat the pressure switch pipe (5) using an oxygen acetylene torch.
13. When the solder is liquid, pull the pressure sensor pipe (5).
14. Cut the nitrogen supply when the piping has cooled down.
1. Resettable high pressure switch
2. High pressure switch
3. High pressure switch connector
Installation
C
AUTION
Overheating the high pressure sensor will damage or destroy it.
Page 86
SA R32 Sky-Air RZAG-L
"Basic removal" on page
"Refrigerant repair procedures" on page
Figure 3-22: Removing high pressure switches
2 1
3.3. Unit specific repair procedures
67).
61).
4 3
4. Tie wrap
5. High pressure switch pipe
22/08/16 | Version 1.1