Suzuki GRAND VITARA JB416 Service Manual page 384

7B-8 Air Conditioning System:
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 evacuating the system.
2) Connect low charging hose (1) and high charging
hose (2) of the manifold 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).
WARNING
!
Make sure that high pressure-side valve is
closed securely.
3
5
6
1
2
4
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5) Start engine and keep engine speed at 1,500 rpm.
Then, operate A/C system.
6) Charge A/C system with refrigerant in vapor state. At
this time, refrigerant container should be held
upright.
7) When refrigerant container (3) is emptied, the use
following procedure to replace it with a new
refrigerant container (3).
a) Close low pressure valve.
b) Replace empty container (3) with a refrigerant
container which has been charged with
refrigerant. When using refrigerant container tap
valve (4), use the following procedure for
replacement.
i) Retract needle (1) and remove refrigerant
container tap valve (4) by loosening its plate
nut (2).
ii) Install previously-removed refrigerant
container tap valve (4) to a new refrigerant
container (3).
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