74
DC Inverter Multi VRF System II
Service Manual
5. Fix the new
compressor at the
chassis
After replacing the compresor, x the nuts at the
bottom of compressor
6. Connect suction
pipe and discharge
pipe of copressor
and pipeline of
system again
● Weld the connection pipe of compressor,
connect the pipeline and compressor
Note: During welding process, do not let ame
burn out other parts
7. Connect the
power cord of
compressor well
● Loose screws xing the power cord with
screwdriver
● conenct the power cord well again
Note: When connecting the power cord, make
marks for different color power cords and
corresponding wiring terminals.
8. Check and open
the upper cover
plate
● Check whether the pipeline is connected well
● Check whetehr all parts and connection wires
are connected well
● If there’s no problem after checking, install front
and rear cover plates.
Removal operation for 4-way valve
Remark: Before removing the 4-way valve, please make sure that there’s no refrigerant inside the pipeline of system and then power is
disconnected.
Process Photo Operation Instruction
1. Disconnect
the coil of 4-way
valve from the
4-way valve
● Remove the coil of 4-way valve at
rst
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