Daikin Perfera RXM50R - Page 46

3 | Components
Service manual
46
RXM20~71R + ARXM25~71R + FTXM20~71R + ATXM25~50R +
FVXM25~50A
Split New Perfera R32
ESIE20-11 – 2021.01
1 Remove the 4‑way valve coil from the 4‑way valve body, see "Repair
procedures"[445].
2 Cut the 4‑way valve pipes using a pipe cutter.
INFORMATION
The cutting locations of the 4‑way valve pipes can differ due to the pipe cutter
needing sufficient space to go around the pipes. It is up to the technician to define
the best cutting locations. If any refrigerant pipes are cut, these need to be replaced
during installation of the 4‑way valve body.
a
b a
c
A
A Class 20~35 unit
a 4‑way valve pipe
b 4‑way valve
c Putty
c a b aA
A Class 42~71 unit
a 4‑way valve pipe
b 4‑way valve
c Putty
3 Remove the 4‑way valve.
4 Keep the putty (if installed) and the insulation (if installed) for re-use.
5 Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT
exceed 0.02MPa.
6 Heat the ends of the 4‑way valve pipes using an oxygen acetylene torch and
remove the 4‑way valve pipe ends.
7 Stop the nitrogen supply when the piping has cooled down.
8 To install the 4‑way valve body, see "Repair procedures"[445].