HVAC System (Heater, Ventilator and A/C)
PRESSURE SWITCH
AC-32
13.Pressure Switch
A: LHD MODEL
The pressure switch is located on the high-pressure line to the receiver drier. When an abnormally
high or low pressure occurs in the high-pressure line, the pressure switch turns OFF to stop oper-
ation of the compressor.
! When the pressure is abnormally low [177 kPa (1.8 kgf/cm
2
, 26 psi) or less]
The pressure switch turns OFF assuming that the refrigerant is lost due to leakage.
! When the pressure is abnormally high [2,940 kPa (30 kgf/cm
2
, 427 psi) or more]
The pressure switch turns OFF to prevent the system from being damaged.
(1) Point terminal (4) Pressure guide
(2) Contact point (5) High-pressure disc spring
(3) Guide pin (6) Low-pressure disc spring
Unit: kPa (kgf/cm
2
, psi)
B4H0172F
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