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b. Turn on car and A/C system, (this will aid in charging of the refrigerant.)
c. Connect the other end of the yellow hose (3) to Refrigerant Gas supply. (Follow refrigerant manufacturer's
instructions for proper dispensing.)
d. Open manifold low side (blue) valve slowly until pressure reaches 40 psi. Do not exceed 40 psi during the
recharging process. Exceeding 40 psi could damage the compressor.
e. When charging is finished, close low side (blue) valve.
EVACUATION OF SYSTEM WITH VACUUM PUMP AND LEAK TESTING:
a. Verify that there is no refrigerant in the A/C system.
b. Attached blue and red adapter to A/C system.
c. Connect yellow hose to vacuum pump, turn on pump.
d. Open manifold low side (blue) valve.
e. Open manifold high side (red) valve.
*After system had been evacuated to a gauge reading of 29" Hg (inches of vacuum), run vacuum pump for
20 minutes.
f. Close both high and low side manifold valves.
g. Allow system to sit and check gauges to verify vacuum remains.
SYSTEM SCHEMATIC:
1. Low side (blue) hose/adapter.
2. High side (red) hose/adapter.
3. Service (yellow) hose.
4. Compressor discharge service valve (16mm diameter.)
5. Compressor suction service valve (13mm diameter.)
www.mastercool.com
89660-INST
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