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HVAC 085 Pump Down

Step 1 is pump down a good choice A Is the filter drier before or after the service valve and only 1. double check. B Is the tube and fin condensing coil large enough c If its micro channel or a small condenser doe it have an accumulator to handle it. Step 2 have the compressor running A if its a heat pump make sure its in cooling mode B attach gauges and take the caps off the valves. Step 3 Quickly close the liquid valve Step 4 10-15 psi or funny noises (which ever is first) shut the power off (the compressor should hold the refrigerant) Step 5 close the suction valve and put the caps on Note do not start a unit while it is pumped down. Do not run a compressor in a vacuum. Visit my friend Craig with AC service tech and his video on pump down.    • Explaination of How to Pump Down an A...