Condensing gas

Throttling refrigerant

Flush out dry nitrogen

Cooling the evaporator

Selector switch

Over load relay

Water flow switch

High pressure cut-out

Selector switch

H.P cut-out switch

L.P cut-out switch

Thermostat switch

Reed valve

Suction valve

Liquid line valve

Discharge service valve

Raise condensation

Improve evaporation

Protect the compressor

Increase refrigerant flow