GREE ELECTRIC GUHD09NK3CO Service Manual page 169

Disassembly and Assembly of 4-way valve
Note: Before removing the 4-way valve, make sure that there is no refrigerant inside the pipe system and that the power has been cut
off.
Step
1. Remove the 4-way
valve
2. Remove 4-way valve
3. Connect the new 4-way
valve to the pipe.
4.Establish vacuum inside
the system through liquid
valve.
Illustration
Inverter Service Manual
Handling Instruction
connected on the four opennings of 4-way
valve. Then, pull them out from 4-way
valve.
record the orientation of 4-way valve and
installing position of each opening.
unit.
position.
wrap the valve body with wet cloth, thus
to prevent the guide inside the valve body
from burn. Also take care to prevent any
nitrogen pressure kept at 0.5±0.1kgf/
2
cm (relative pressure).
through liquid valve.
U-Match Series DC
166