Pressure Switch

PRESSURE SWITCH




The pressure switch is a high-pressure side component of the refrigeration cycle (cooling cycle). It consists of a diaphragm that receives refrigerant gas pressure, a snap plate, a rod, contacts that open both when the gas pressure is too low and when it is too high, and a switch that operates at mid-pressure.
The pressure switch plays the following roles:
- Prevents "no-gas" operation due to leakage (when gas pressure is too low)
- Protects the system against abnormally high refrigerant pressure (when gas pressure is too high)
- Detects compressor load (mid pressure contact: electric cooling fan output control)

ON-OFF Pressures:

ON-OFF pressures

SPECIFICATIONS

High/Low Pressure Switch (Compressor ON/OFF Control):

High/low pressure switch (compressor ON/OFF control)

Mid Pressure Switch (Electric Cooling Fan Output Control):

Mid pressure switch (electric cooling fan output control)