INVENTOR u-match on/off Service Manual page 121

U-MATCH AIR CONDITIONERS
8. Vacuum pumping with
fluorin injection mouth
9. Refill of cooling medium
through fluorin injection
mouth
Disassembly and Assembly of 4-way valve
Remark: Make sure there isn't any refrigerant in pipe system and the power supply is cut off before
removal of the 4-way valve.
Step
1. Disassembly of solenoid
valve
2. Removal of
electromagnetic valve
Vacuum
pumping
through
process pipe
Vacuum
pumping
through
process pipe
Illustration
Disassemble
solenoid
valve
MAINTENANCE
Pump vacuum through
fluorin injection mouth.
Refill cooling medium into
system through fluorin
injection mouth
Volume of refilling should
be in accordance with the
requirement on the unit
nameplate.
Handling Instruction
Cut off power supply and
reclaim cooling medium
properly.
Disassemble solenoid
valve with wrench.
Take and remove solenoid
valve from 4-way valve.
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