Suzuki Canvas SQ416 Service Manual page 13

1B-4 AIR CONDITIONING (OPTIONAL)
G16 LH steering vehicle shown
1. Manifold gauge set
2. High pressure side (Delivery side hose)
3. Low pressure side (Suction side pipe)
RECOVERY, EVACUATION AND
CHARGING
PROCEDURE OF CHARGING
1) Make sure that hoses are routed properly after evacuating the
system.
2) Connect the manifold gauge set in position. Thus open refriger-
ant container valve to purge the charging line. Then open the low
pressure-side valve.
WARNING:
Make sure that high pressure-side valve is closed se-
curely.
3) Start engine and keep engine speed at 1,000 r/min. Then, oper-
ate air conditioning.
4) Charge A/C system with refrigerant in vapor state. At this time,
refrigerant container should be held upright.
5) When refrigerant container is emptied, use following procedure
to replace it with a new refrigerant container.
a. Close low pressure valve.
b. Replace empty container with a refrigerant container which
has been charged with refrigerant. When using refrigerant
container tap valve, use following procedure for replace-
ment.
1. Needle
2. Plate nut
i) Retract needle and remove refrigerant container tap valve
3. Refrigerant
container
4. Handle
ii) Install previously-removed refrigerant container tap valve
c. Purge any air existing in center charging hose.
When using refrigerant container tap valve, use following
procedure to purge air.
i) Once fully tighten refrigerant container tap valve and then
ii) Open low pressure valve of manifold gauge set a little.
iii) As soon as refrigerant comes out with a "hiss" through a
iv) Turn handle of tap valve clockwise so that its needle is
1. "Hiss"
by loosening its plate nut.
to a new refrigerant container.
loosen (open) plate nut slightly.
clearance between refrigerant container and tap valve,
tighten plate nut as well as manifold gauge set low pres-
sure valve.
screwed into the new container to make a hole for refriger-
ant flow.