Gree U-MATCH GUHD09NK3CO - Page 199

A/A DC INVERTER U-MATCH AIR CONDITIONERS MAINTENANCE
196
13. Establish vacuum
through liquid valve
● Establish vacuum
inside the system
through liquid valve.
14. Charge refrigerant
through liquid valve
● Recharge the
refrigerant to the
system through liquid
valve.
● The charge volume
must be identical to
the indications on
nameplate.
Disassembly and Assembly of 4-way valve
Remark : 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 Illustration Handling Instruction
1. Remove the 4-way
valve
● Use gas welding to
heat the pipes
connected on the four
opennings of 4-way
valve. Then, pull them
out from 4-way valve.
● Before welding 4-way
valve, please record the
orientation of 4-way
valve and installing
position of each
opening.
2. Remove 4-way valve
● Remove the old 4-way
valve from the unit.