HA -14
HEATING, VENTILATION AND AIR CONDITIONING
COMPRESSOR OIL
INSPECTION
E5FC3B3D
OIL SPECIFICATION
1.
The HFC-134a system requires synthetic (PAG) com-
pressor oil whereas the R-12 system requires mineral
compressor oil. The two oils must never be mixed.
2.
Compressor (PAG) oil varies according to compressor
model. Be sure to use oil specified for the model of
compressor.
HANDLING OF OIL
1.
The oil should be free from moisture, dust, metal pow-
der, etc.
2.
Do not mix with other oil.
3.
The water content in the oil increases when exposed
to the air. After use, seal oil from air immediately.
(HFC-134a Compressor Oil absorbs moisture very
easily.)
4.
The compressor oil must be stored in steel containers,
not in plastic containers.
COMPRESSOR OIL CHECK
The oil used to lubricate the compressor is circulating with
the refrigerant.
Whenever replacing any component of the system or a
large amount of gas leakage occurs, add oil to maintain
the original amount of oil.
Oil total volume in system:
FRONT ONLY : 150 ± 10cc (5.07 ± 0.338 fl.oz)
FRONT ＆ REAR : 210 ± 10cc (7.1 ± 0.33 fl.oz)
OIL RETURN OPERATION
There is close affinity between the oil and the refrigerant.
During normal operation, part of the oil recirculates with
the refrigerant in the system. When checking the amount
of oil in the system, or replacing any component of the
system, the compressor must be run in advance for oil
return operation. The procedure is as follows:
1.
Open all the doors and the engine hood.
2.
Start the engine and air conditioning switch to "ON"
and set the blower motor control knob at its highest
position.
3.
Run the compressor for more than 20 minutes be-
tween 800 and 1,000 rpm in order to operate the sys-
tem.
4.
Stop the engine.