CHARGING PROCEDURE
The initial charging of the A/C system is performed from the high-
pressure side with the engine stopped.
And next, this method must be followed by charging from the low-
pressure side with the engine running.
1) Check to make sure that hoses are routed properly after eva-
cuating the system.
2) Connect Low-side hose (1) and High side hose (2) of the man-
ifold gauge set (3) in position. Thus open refrigerant container
valve (4) to purge the charging line.
3) Open the high-pressure side valve (6) and charge refrigerant to
system.
4) After a while, open the low-pressure side valve (5) and close the
high-pressure side valve (6).
5) Start engine and keep engine speed at 1500 r/min. Then, oper-
ate air conditioning.
6) Charge A/C system with refrigerant in vapor state. At this time,
refrigerant container should be held upright.
WARNING:
Make sure that high pressure-side valve is closed se-
curely.
AIR CONDITIONING (OPTIONAL) 1B-19
SH410
CHARGING
CAUTION:
ALWAYS CHARGE THROUGH LOW PRESSURE-SIDE of A/C system at after the initial charging is
performed from the high-pressure side with the engine stopped.
NEVER CHARGE TO HIGH PRESSURE-SIDE of A/C system with engine running.
Do not charge while compressor is hot.
When installing tap valve to refrigerant container to make a hole there through, carefully follow
directions given by manufacturer.
A pressure gauge should always be used before and during charging.
The refrigerant container should be emptied of refrigerant when discarding it.
The refrigerant container should not be heated up to 40 C or over.
Refrigerant container should not be reversed in direction during charging. Reversing in direction
causes liquid refrigerant to enter compressor, causing troubles, such as compression of liquid
refrigerant and the like.
NOTE:
The air conditioning system contains CFC-12 (R-12).
Described here is a method to charge the air conditioning system with refrigerant from the refrigerant ser-
vice container.
When charging refrigerant recovered by using the refrigerant and recycling equipment (when recycling
refrigerant), follow the procedure described in the equipment manufacturer’s instruction manual.
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