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Dual Pressure Switch|Page 6754 > < Mechanical Specifications|Page 6751
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Refrigerant Pressure Sensor / Switch: Description and Operation
Dual Pressure Switch

A/C Dual Pressure Switch

Dual pressure switch is installed on the upper part of the receiver/drier, to detect excessively high pressure (high pressure switch) and prevent
compressor seizure due to the refrigerant leaking (low pressure switch). Switching the compressor "ON" or "OFF" as required.

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Compressor ON . OFF (kPa/psi)
Low-pressure control
ON: 186.3 ± 29.4 (27.0 ± 4.3)
OFF: 176.5 ± 24.5 (25.6 ± 3.6)

High pressure control
ON: 2353.6 ± 196.1 (341.3 ± 28.4)
OFF: 2942.0 ± 196.6 ± 28.4

Dual Pressure Switch|Page 6754 > < Mechanical Specifications|Page 6751