Gree HOME GMV Инструкция по эксплуатации онлайн [264/367] 48267

Gree HOME GMV Инструкция по эксплуатации онлайн [264/367] 48267
Dc Inverter VRF plus Water Heater Solution Service Manual SERVICING
260
9
Recharge
refrigerants by
fluorin-feeding
nozzle
Recharge refrigerants
to the system by
fluorin-feeding nozzle
Volume of refilling
should be in accordance
with the requirement on
the unit nameplate.
Disassembly and Assembly of 4-way valve
RemarksMake 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
1 Remove the
coil of 4-way
valve
Use screwdriver to
remove the screws fixing
the coil
Remove the coil of
4-way valve.
2 Use welding
gun to unsolder
the four pipes
connected to
4-way valve.
Heat connection pipes
for 4 pipes of 4-way valve
with gas welding before
removal of 4-way valve.
Provide nitrogen
protection during gas
welding and the nitrogen
pressure should be
0.5±0.1kgf/cm
2
relative
pressure
Please pay attention to
heating in case that
surrounding materials
should be burnt by high
temperature.
3 Install new
4-way valve
Wrap the valve with wet
cloth
Reweld the pipes
connected to 4-way valve

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