Cooper & Hunter FG20/C-M, Service Manual

Page: 64 / 91

DUCT TYPE SPLIT AIR CONDITIONER MAINTENANCE
61
6.Connect the power cord of
compressor
Note:Earmark the colour of wire
corresponding to the terminal
when connecting the wire , and
the mixture can be avoided
7.Recover the electric heating
tape of compressor and
discharge temperature
sensor,etc.
Enwind the bottom of
compressor with electric heating
tape and fix it.
8.Check if the compressor
rotates in reverse and if
lubricant have leaked
Check if the wiring is correct
with reference to circuit diagram
and check if there is any leakage
after welding.
Disassembly and Assembly of 4-way valve
Remark: Make sure that there isn’t any refrigerant in pipe system and the power supply is cut off before removal of
4-way valve.
Step Illustration
Handling Instruction
Remove electric coils of 4- way
valve
Place electric coils far away
from the 4-way valve to
prevent the connecting line of
4-way valve from burning
when succeeding welding.
Disconnect the pipe (site D in
illustration) of 4-way valve and
discharge pipe
Don’t leave welding slag
inside pipes.
Disconnect the pipe (site E in
illustration) of 4-way valve and
connecting pipe
Don’t leave welding slag
inside pipes.