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2.3
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2.3.1 Refrigerant Indicator
Picture 2-9
：
Refrigerant Indicator
1) The refrigerant indicator is used to detect whether the refrigerant is filled
appropriately.
2) The refrigerant indicator is used to detect the water ratio of the system.
2.3.2 Liquid Pipe Solenoid Valve
Picture 2-10
：
Liquid Pipe Solenoid Valve
Cut off the refrigerant supply circuit immediately after shutdown to prevent the
evaporator from freezing.
2.3.3 Hot-gas By-pass Valve
Picture 2-11
：
Hot-gas By-pass Valve
It is used for bypass refrigerant gas at low temperature to avoid compressor
frequent start-up for accurate temperature control.
