Gree Ultra Heat GMV-V72W/A-F, Руководство по обслуживанию, Страница: 136 / 240

Ultra Heat GMV VRF Technical Service Manual MAINTENANCE
131
After the box is removed, take care with the remov
al of electric parts’ lines. DO NOT pull the lines
with excessive force; or they may be broken. The removed electric box must be protected for dustproof
and waterproof purposes.
Step 3: Release refrigerant.
Refrigerant should be released from the high pressure side and low pressure side at the same time.
If it is released from one side only, the scroll is sealed, causing the refrigerant to fail to be released
completely. Control the release speed (it is expected to release for 12 hours or more). If too fast,
massive lubricant will be discharged with the refrigerant. Make sure to mark the valves. At the low
pressure side, refrigerant is released through the low pressure check valve.
Step 4: Remove faulty compressors.
Confirm faulty compressors, including number of faulty ones, compressor position, and model.
Handling procedure varies with compressor model.
(1) Inverter compressors and oil quality
If the inverter compressor is damaged, remove the inverter compressor. The procedure is as
follows:
Gas pipe
Liquid pipe
Low pressure
check valve
1
、
Inlet of inverter
compressor
2
、
Outlet of inverter
compressor
3
、
Middle inlet of
inverter compressor
4
、
Oil balance
pipe
5
、
Unscrew the
compressor