SAFARI

AIRCONDITIONING

CHARGING THE A/C SYSTEM:

1. Installation of Manifold Gauge

a Close both the high and low hand valves of the

manifold gauge.

b Connect the low pressure hose to the low pressure

charging valve and the high pressure hose to the

high pressure charging valve.Tighten the hose nuts

by hand.

Important

Do not apply compressor oil to the seats of the

connection.

2. Evacuate Air in Refrigeration System

a. Connect the center hose of the gauge set to the

vacuum pump inlet.

b. Open both the high and low hand valves and run

the vacuum pump.

If opening the low pressure hand valve pulls the

high pressure gauge into the vacuum range, there

is no blockage in the system.

c. After about ten minutes, check that the low

pressure gauge indicates more than 600 mmHg

(23.62 in Hg, 80.0 kPa) of vacuum.

If the reading is not more than 600 mmHg (23.62

in Hg, 80.0 kPa), close both valves and stop the

vacuum pump. Check the system for leaks and

repair as necessary.

If no leaks are found, continue evacuating the air

in the system.

d. Continue evacuating the air in the system until the

low pressure gauge indicates a vacuum of 750

mmHg (29.53 in Hg, 99.98 kPa).

e. Close both the high and low hand valves and stop

the vacuum pump, then leave the system in this

condition for five minutes or longer and check that

there is no change in the gauge indication.

CLOSED

OPEN

AIR

OPEN

CLOSED

Fig. 49

Fig. 50