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7B-60 Air Conditioning System: Recovery NOTE • After recovering refrigerant from system the amount of removed compressor oil • When handling recovery and recycling equipment, be sure to follow the
Evacuation CAUTION !
Do not evacuate before recovering
NOTE
1) Connect high charging hose (1) and low charging hose (2) of manifold gauge set (3) respectively as → High pressure charging valve (4) on discharge hose → 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 4) Approx. 10 minutes later, low pressure gauge (11) should show a vacuum lower than –100 kPa (–1.0 2 , –760 mmHg, –14.2 psi) providing no leakage exists. NOTE • If the system does not show a vacuum below –100 kPa (–1.0 kg/cm 2 , –760 mmHg, –14.2 psi), close both valves, stop vacuum • Increase in the gauge reading suggests existence of leakage. In this case, repair • If the gauge shows a stable reading (suggesting no leakage), continue
5) Evacuation should be carried out for a total of at least 20 minutes. 6) Continue evacuation until low pressure gauge indicates a vacuum less than –100 kPa (–1.0 kg/cm 2 , –760 mmHg, –14.2 psi), and then close both valves 7) Stop vacuum pump (7). Disconnect center charging hose (6) from pump inlet. Now, the system is ready 1 I5JB0A720032-01 8 9 2 1 4 5 11 3 10 6 7 I5JB0A720033-01 |