4
|
Components
Service manual
91
RXM20~71R(9) + ARXM25~71R(9) + FTXM20~71R + ATXM25~50R +
FVXM25~50A
Split New Perfera R32
ESIE20-11B – 2022.02
High pressure switch connector
measurements are correct?
Then
Yes
High pressure switch is OK. Return to
the troubleshooting of the specific error
and continue with the next procedure.
No
Replace the high pressure switch, see
91].
4.6.2 Repair procedures
To remove the high pressure switch
Prerequisite:
Stop the unit operation via the user interface.
Prerequisite:
Turn OFF the respective circuit breaker.
Prerequisite:
Remove the required plate work, see
Prerequisite:
Recuperate the refrigerant from the refrigerant circuit, see
1
If needed, remove any parts to create more space for the removal of the high
pressure switch.
2
Remove the compressor insulation, see
3
Disconnect the Faston connectors from the high pressure switch.
4
Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT
exceed 0.02 MPa.
5
Wrap a wet rag around the components near the high pressure switch. Heat
the brazing point of the high pressure switch pipe using an oxygen acetylene
torch and remove the high pressure switch pipe from the refrigerant pipe
using pliers.
b
c
b
a
a
High pressure switch
b
Faston connector
c
High pressure switch pipe
6
Stop the nitrogen supply when the piping has cooled down.
7
Remove the high pressure switch.
