Replacement Of Main Parts; Brief Introduction - Gree LSQWRF35VM/NaA-M Service Manual

4.4 Replacement of main parts

4.4.1 Brief introduction

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Test Operation, Troubleshooting and Maintenance
Name
Compressor
Vapor-liquid separator
Four-way valve
Shell-and-tube heat exchanger
Finned heat exchanger
Electric expansion valve
It is the power source of
the whole system, used to
compress low-pressure and
low-temperature refrigerant
to be high-pressure and high-
temperature gas.
It is intended to separate
refrigeration oil from liquid
refrigerant.
It is used to control the flow
direction of refrigerant for either
heating or cooling.
It is intended conduct heat
exchange between the
refrigerant and the second
refrigerant.
At the cooling mode, it is
intended to turn the
high-temperature high-pressure
refrigerant vapor into refrigerant
liquid by releasing heat to
the cooling medium. At the
heating mode, it is intended to
vaporize refrigerant liquid by
absorbing heat from the cooling
medium.
It is intended to control
refrigerant flow rate to make it
match with the required load
and make the refrigerant flowing
into the evaporator evaporate
completely.
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Function