ESIE15-08B
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Part 3. Repair
2. Unit specific repair procedures Monobloc CA
19/07/16
Page 129
Daikin Altherma Monobloc CA
2.2.10. Replacing the high pressure switch S1PH
2.2.10.1 Preliminary actions
1.
Switch off the Daikin Altherma Monobloc CA via the user interface.
2.
Switch off the Daikin Altherma Monobloc CA with the field supplied circuit breaker.
3.
Recover the refrigerant, refer to
"Refrigerant recovery" on page 106
.
4.
Remove the switch box, refer to
"Replacing the switch box" on page 117
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.
2.2.10.2 Procedure
Removal
1.
Remove the connectors (1) from the high pressure switch (2).
2.
Using a pipe cutter, cut the pressure sensor pipe (3).
3.
Remove the high pressure switch (2).
4.
Supply nitrogen to the piping circuit.
5.
Heat the high pressure switch pipe (3) using an oxygen acetylene torch.
6.
When the solder is liquid, remove the high pressure switch pipe (3).
7.
Cut the nitrogen supply when the piping has cooled down.
Figure 20 - Removing the high pressure switch S1PH
C
AUTION
The maximum applied Nitrogen pressure must not exceed 0.02 MPa.
1. Connector
3. High pressure switch pipe
2. High pressure switch S1PH
3
2
1
