TM 9-4120-370-14
TO 35E9-229-1
5-13. REFRIGERANT PRESSURE CHECK - Continued.
(1) If the discharge and suction pressures are at, or near the same value, a pressure equalizer solenoid valve
malfunction or an internal compressor failure is indicated.
(2) If discharge pressure is low and suction pressure is normal, (see Table 52) a low refrigerant charge is
indicated.
(3) If discharge pressure is normal and suction pressure is either high or low, failure or maladjustment of the
pressure regulator valve is indicated.
(4) If discharge pressure is high and suction pressure is normal, a malfunction of quench valve is indicated.
When pressure tests are completed, proceed with the maintenance action indicated.
m.
Turn unit OFF.
n.
o.
Close both service valves on unit.
Remove gages or service manifold hoses from service valves.
p.
Install the valve stem and hose connection protective caps.
q.
r.
Using screwdriver, secure service valve cover with six screws, lock washers, and flat washers.
s.
On F36T2SA and F36T42SB close condenser discharge air deflector door.