CHV Mini VRF 50/60Hz
18 201908
CHV Mini Series Service Manual
Oil separator: It is used to separate oil from high pressure & temperature gas refrigerant that is pumped out from
compressor. The separation efficiency is up to 99%, it makes the oil return back to each compressor very soon.
Gas-liquid separator: It is used to store the liquid refrigerant and oil, it can protect the compressor from liquid hammer.
4-way valve: Closed in cooling mode and open in heating mode.
Electronic expansion valve: The opening is of the valve is regulated according to the discharge air temperature of
compressor, used to regulating refrigerant flow.
High Pressure Switch: When the discharge pressure of compressor is 4.5Mpa or higher, the protection
switch will be triggered, and if the discharge pressure is down to 3.5MPa, the protection switch will be recovered.
Low Pressure Switch: When the gas pressure back to compressor is 0.05Mpa or lower, the protection switch will be
triggered, and if the discharge pressure is down to 0.15MPa, the protection switch will be recovered.
4. Piping Diagrams
Electronic
expansion
Evaporator
valve
High pressure
switch
Electronic
expansion
Condensor
valve
Oil seperator
Oil return
capilary
Compressor
Low Low
pressure pressure
switch liquid
accumulator can
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