HEATER AND MANUAL AIR CONDITIONER –
On-vehicle Service
55-11
DISCHARGING SYSTEM
1.
Run the engine at an engine speed of 1,200– 1,500 r/min
for approximately 5 minutes with the A/C operating to
return to the oil.
NOTE
Returning the oil will be more effective if it is done while
driving.
2.
Stop the engine.
3.
Connect the charging hose (blue) to the adaptor valve
1 with its handle turned back all the way (valve closed).
4.
Connect the quick joint 2 to the charging hose (blue),
and install the quick joint to the low-pressure service valve.
NOTE
The low-pressure service valve is provided on the suction
pipe.
Caution
(1) To connect the quick joint, press section “A” firmly
against the service valve until a click is heard.
(2) When connecting, run your hand along the hose
while pressing to ensure that there are no bends
in the hose.
5.
Place the adaptor valve 1 inside the container and
discharge the refrigerant by opening the handle gradually
so that oil does not gush out.
NOTE
Any oil remaining in the container should be returned
to the A/C system.
PERFORMANCE TEST
1.
The vehicle to be tested should be placed in a place
that is not exposed to direct sunlight.
2.
The ambient condition should be 16 – 30
°
C in temperature
and 60 – 100 % in relative humidity.
3.
Open all the doors so that the air condition inside the
passenger compartment may be identical to that of the
outside.
4.
With the high-pressure side of the gauge manifold closed,
connect the charging hose (red) to the gauge manifold
high-pressure side. Attach the quick joint for high-pressure
to the charging hose (red) and install it to the high-pressure
service valve on the vehicle side.
NOTE
The high-pressure service valve is found on liquid pipe
B.
Sleeve
Low-
pressure
service
valve
High-
pressure
service
valve
Air conditioning system
Adapter
valve (for low
pressure)
Charging hose
(blue)
Quick joint (for
low pressure)
Air conditioning
compressor oil
A
Low-pressure
valve
Gauge manifold
Charging hose (red)
Quick joint
(for high pressure)
Low-
pressure
service
valve
Sleeve
Low-pressure
gauge
High-pressure
gauge
High-
pressure
service
valve
Air conditioning system
A
High-
pressure
valve