Subaru Forester 2004 - Refrigerant Charging Procedure

AC-27
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
Refrigerant Charging Procedure
4. Refrigerant Charging Proce-
dure
A: OPERATION
CAUTION:
• During operation, be sure to wear safety gog-
gles and protective gloves.
• If air is mixed in refrigeration cycle, poor cool-
ing may result, and also if moisture is mixed in re-
frigeration cycle, clogging (freezing) or rust may
result.
Before charging the refrigerant, evacuate the
system using vacuum pump to remove air and
moisture in the system. Moisture can be evapo-
rated and removed easily even at normal tem-
perature, if the system is evacuated using
vacuum pump.
1) Close all valves of manifold gauge.
2) Install the low-/high-pressure hoses to corre-
sponding service ports on vehicle.
CAUTION:
Be sure that the hoses are securely connected.
3) Connect the center hose of manifold gauge with
vacuum pump.
4) Activate the vacuum pump and then open the
valves on low-/high-pressure sides.
CAUTION:
Be sure to evacuate the system using vacuum
pump.
5) After at least 5 minutes of evacuation, if the low-
pressure gauge reading shows 100.0 kPa (750
mmHg, 29.5 inHg) or higher, close the valves on
center hose to stop the vacuum pump.
L: Low-pressure gauge
H: High-pressure gauge
(1) Low-pressure valve
(2) Vacuum pump valve
(3) High-pressure valve
(4) For low-pressure
(5) For vacuum pump
(6) For high-pressure
AC-00146
(2)
(4)
(5)
(6)
(3)
(3)
(2)
(1)
HL
(1)
(1) Low-pressure service port
(2) High-pressure service port
(3) Close
(1) Vacuum pump
(2) Open
AC-00147
(3)
(2)(1)
AC-00148
(1)
(2)