Daikin Sensira Series, Service Manual

Page: 49 / 172

2 | Components
Service manual
49
FTXF20~71A + FTXF20~25B + FTXF20~42C + ATXF20~71A + ATXF20~42C
+ RXF20~71A + RXF20~60B + RXF20~42C + ARXF20~71A + ARXF20~42C
Split Sensira R32
ESIE18-12E – 2021.02
4 Set the Megger voltage to 500 V DC or 1000 V DC.
5 Measure the insulation resistance between the following terminals. The
measured insulation resistance MUST be >3 MΩ.
▪
U–ground,
▪ V–ground,
▪ W–ground.
Compressor insulation measurements
are correct? Action
Yes Compressor is OK. Return to
troubleshooting of the specific error
and continue with the next procedure.
No Replace the compressor, see
"2.2.2 Repair procedures" [
4
49].
2.2.2 Repair procedures
To remove the compressor
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see "2.10 Plate work" [ 4 101].
Prerequisite: Remove the compressor insulation.
Prerequisite: Recuperate the refrigerant from the refrigerant circuit, see
"3.2.2 Repair procedures" [
4
133].
1 If needed, remove any parts to create more space for the removal of the
compressor.
DANGER: RISK OF ELECTROCUTION
Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure
the rectifier voltage is below 10 V DC before proceeding.
2 Remove the cover of the compressor wire terminals.
a
a Compressor wire terminals cover
3 Disconnect the Faston connectors from the compressor wire terminals U, V
and W.