Subaru 2002 Impreza Service Manual page 376

I
I
AIR CONDITIONER
HVAC System (Heater, Ventilator
and
N C )
1. PRESSURE RELIEF VALVE
This valve opens if the pressure of the high-pressure refrigerant gas rises to a dangerously high
level to release part of refrigerant into the atmosphere, thus protecting the compressor. The valve
is designed to limit the amount of released gas to the necessary minimum.
Valve opening pressure: 3.72 MPa (38 kgf/cm2)
Valve closing pressure: 1.8 MPa (1 7.5 kgf/cm2)
(1)
.Seat rubber
(2) Seat cover
(3) O-ring
Operating characteristic
(elmin)
(B)
t
(A) Pressure
(B) Leakage
AC-12
NF0380
NFOl72