Daikin FTXP20-71L, Руководство по обслуживанию

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3 | Components
Service manual
74
ATXP20~35 + FTXP20~71 + ARXP20~35 + RXP20~71
Split Comfora R32
ESIE18-01E – 2023.01
3.4.2 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 "3.9 Plate work" [
4
111].
Prerequisite: Recuperate the refrigerant from the refrigerant circuit, see
"4.2.2 Repair procedures" [
4
148].
1 If needed, remove any parts to create more space for the removal of the high
pressure switch.
2 Disconnect the Faston connectors from the high pressure switch.
3 Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT
exceed 0.02 MPa.
4 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.
a
c
b b
a High pressure switch
b Faston connector
c High pressure switch pipe
5 Stop the nitrogen supply when the piping has cooled down.
6 Remove the high pressure switch.
INFORMATION
It is ALSO possible to cut the component pipe(s) using a pipe cutter. Make sure to
remove the remaining component pipe end(s) from the refrigerant pipes by heating
the brazing point(s) of the component pipe(s) using an oxygen acetylene torch.
7 Install a plug or cap on the refrigerant piping to avoid dirt or impurities from
entering the piping.
8 To install the high pressure switch, see "3.4.2 Repair procedures" [
4
74].
To install the high pressure switch
1 Remove the plug or cap from the refrigerant piping and make sure it is clean.
2 Install the high pressure switch in the correct location.