Daikin RXM20R Service Manual page 54

4 | Components
Service manual
54
1 Remove the 4‑way valve coil from the 4‑way valve body, see
4
procedures" [ 53].
2 Remove and keep the putty (if installed) and the insulation (if installed) for re-
use.
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 4‑way valve pipes. Heat the
brazing points of the 4‑way valve pipes using an oxygen acetylene torch and
remove the 4‑way valve pipes from the refrigerant pipes using pliers.
A
A Class 20~35 unit
a 4‑way valve pipe
b 4‑way valve
c Putty
A
A Class 42~71 unit
a 4‑way valve pipe
b 4‑way valve
c Putty
5 Stop the nitrogen supply when the piping has cooled down.
6 Remove the 4‑way valve.
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.
b a
c a
c a b a
RXM20~71R(9) + ARXM25~71R(9) + FTXM20~71R + ATXM25~50R +
"4.1.2 Repair
FVXM25~50A
Split New Perfera R32
ESIE20-11B – 2022.02