Daikin Perfera RXM R Series Service Manual page 83

To install the expansion valve body
RXM20~71R + ARXM25~71R + FTXM20~71R + ATXM25~50R +
FVXM25~50A
Split New Perfera R32
ESIE20-11 – 2021.01
6 Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT
exceed 0.02 MPa.
7 Heat the ends of the expansion valve pipes using an oxygen acetylene torch
and remove the expansion valve pipe ends.
8 Stop the nitrogen supply when the piping has cooled down.
9 To install the expansion valve body, see
1 Install the expansion valve body in the correct location and correctly oriented.
2 Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT
exceed 0.02 MPa.
3 Wrap a wet rag around the expansion valve body and solder the expansion
valve pipes to the refrigerant pipes.
CAUTION
Overheating the valve will damage or destroy it.
4 After soldering is done, stop the nitrogen supply after the component has
cooled‑down.
a b
a Putty
b Expansion valve pipe
c Expansion valve body
a Expansion valve pipe
b Expansion valve body
"Repair procedures" [
c
a b
3 Components
|
4
79].
Service manual
83