Evacuating; Evacuating Procedure - Suzuki GRAND VITARA XL-7 Owner's Manual

3
6
10
11
8
9
2
5

Evacuating

Evacuating procedure

CAUTION:
Do not evacuate before recovering refrigerant in system.
NOTE:
Whenever opened (exposed to atmospheric air), air con-
ditioning system must be evacuated by using a vacuum
pump. The A/C system should be attached with a mani-
fold gauge set, and should be evacuated for approx. 20
minutes.
1) Connect high charging hose (1) and low charging hose (2) of
manifold gauge set (3) respectively as follows:
High Charging Hose (1) → High pressure charging valve (4)
on Discharge Hose
Low Charging Hose (2) → Low pressure charging valve (5)
on Suction Pipe
2) Attach center charging hose (6) of manifold gauge set (3) to
vacuum pump (7).
3) Operate vacuum pump (7), and then open discharge-side
valve (9) (Hi) of manifold gauge set (3).
If there is no blockage in the system, there will be an indica-
tion on high pressure gauge (10).
When this occurs, open the other-side valve (8) (Lo) of the
7
set.
4) Approx. 10 minutes later, low pressure gauge (11) should
show –10 kPa (–1.0 kg/cm
ing no leakage exists.
NOTE:
1
• If the system does not show –10 kPa (–1.0 kg/cm
4
760 mmHg, –14.2 psi), close both valves, stop vacuum
pump and watch movement of low pressure gauge.
• Increase in the gauge reading suggests existence of
leakage. In this case, repair the system before continu-
ing its evacuation.
• If the gauge shows a stable reading (suggesting no
leakage), continue evacuation.
5) Evacuation should be carried out for a total of at least 20
minutes.
6) Continue evacuation until low pressure gauge indicates –10
kPa (–1.0 kg/cm
both valves (8), (9).
7) Stop vacuum pump (7). Disconnect center charging hose (6)
from pump inlet. Now, the system is ready for charging refrig-
erant.
AIR CONDITIONING (OPTIONAL) 1B-21
2
, –760 mmHg, –14.2 psi) provid-
2
, –760 mmHg, –14.2 psi), and then close
2
, –