6. Discharge the System
CAUTION:
The following points must be kept in mind
when discharging the system.
Be certain that goggles and gloves are worn.
Connect refrigerant recovery system to
manifold gauge set and remove recycled refrig-
erant from the A/C system.
NOTE:
Refer to the relevant refrigerant recovery system
instruction manual for operating procedures.
A: CONNECTING THE MANIFOLD
GAUGE SET
1) Close the high and low side manifold valves.
G4M0585
2) Turn the A/C system ON and turn the IG switch
OFF.
3) Attach the high- and low-pressure manifolds to
the high and low services port on the vehicle.
G4M0586
B: PREPARE FOR DISCHARGING
Connect center manifold hose to refrigerant recov-
ery system to recycle refrigerant.
7. Evacuating and Charging
The following points should be kept in mind when
evacuating and charging with a manifold gauge
set:
1) Be certain that goggles and gloves are worn.
2) If bulk refrigerant [13.6 kg (30 lb) canister] is
used, be certain to weigh the charge amount
carefully, using the correct equipment, to avoid
overcharging the system.
3) The charging procedure described in this sec-
tion begins by charging liquid refrigerant into the
high-pressure side of the system with the engine
off. The procedure is completed by charging refrig-
erant vapor into the low-pressure side of the sys-
tem with the engine running.
CAUTION:
Never open the high-pressure manifold valve
when the engine is running.
A: CONNECT THE GAUGE SET
1) Close the high- and low-pressure manifold
valves.
G4M0596
2) Attach the low-pressure manifold hose to the
low-pressure service port on the vehicle. Check
the low-pressure gauge. If more than 68.6 kPa
(0.70 kg/cm
2
, 10 psi) is indicated, discharge the
system prior to charging.
3) Attach the high-pressure manifold hose to the
high-pressure service port on the vehicle.
4) Connect the center hose from the manifold to
the vacuum pump.
5) Turn on the vacuum pump.
14
4-7 [W600] SERVICE PROCEDURE
6. Discharge the System