ZEST BOLT Service Manual

AIR CONDITIONING 35 SAFETY PRECAUTIONS EVACUATION - CONNECT CHARGING STATION CONNECT GAUGE MANIFOLD START VACUUM PUMP -HIGH PRESSURE and LOW PRESSURE GAUGE READINGS (HP BELOW ZERO) (LP BELOW ZERO) EVACUATE / DEHYDRATE TO -1 kg / cm2 CONTINUE FOR 15 MINUTES STOP PUMP OBSERVE THAT PRESSURE DOES NOT RISE ABOVE - 0.9 kg / cm2 WITHIN 15 MINUTES IF PRESSURE STABILISES AT HIGHER LEVEL RE-EVACUATE IF PRESSURE CONTINUOUSLY RISES-LEAK TEST RE-EVACUATE AFTER RECTIFICATION. CHARGING (R 134a 660 ± 20 grms) OPEN HIGH SIDE VALVES and ALLOW AS MUCH AS REFRIGERANT AS POSSIBLE TO ENTER SYSTEM, BUT NOT MORE THAN 660 ± 20 gms CLOSE VALVES and ROTATE COMPRESSOR FRONT PLATE MANUALLY TO ENSURE NO LIQUID IS TRAPPED IN THE COMPRESSOR START ENGINE SET TO FAST IDLE. (1500 - 1700 rpm) ACTIVATE A/C SWITCH. SET CONTROL TO MAXIMISE COOLING and HIGH BLOWER SPEED OPEN LOW SIDE VALVE and COMPLETE THE CHARGING PROCESS (IF REQUIRED) CAUTION: DO NOT ALLOW MORE THAN 3.5 kg / cm2 TO REGISTER ON THE LOW SIDE GAUGE DURING CHARGING CLOSE ALL VALVES and TAPS. REMOVE HIGH and LOW FILLING HOSES. CONNECT HIGH SIDE FILLING HOSE TO RECOVERY UNIT INLET SIDE. SWITCH ON RECOVERY MACHINE and REMOVE ALL REFRIGERANT IN FILLING HOSES