2019 - Volume #43, Issue #5, Page #32
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How To Reclaim Refrigerant From An Air Conditioning Systems
Carl Deaubler, Minford, Ohio: “To reclaim refrigerant from an air conditioning system, I put a 30-lb. tank inside a 5-gal. bucket and pack it in ice. Connect the center hose from a gauge set to the tank. Before opening the valve to the tank, purge the lines with pressure. When you open the tank valve, refrigerant will flow into the ice cold tank from the A/C system. Then use a heat gun to warm up the A/C components (condenser, dryer, accumulator, lines, etc.) which pushes refridgerant into the iced tank, where the gas will condense into a liquid. Observe both gauges connected to the high and low sides of the A/C system. When the refrigerant is heated, a pressure rise will be noted on both gauges. Once all liquid has been boiled into a gas, the gauges will not show an increase when heat is applied so you’ll know the system is empty. The liquid refrigerant in the tank can be reused. If any air was introduced into the tank, keep the tank upright and ‘burp’ it slightly before reuse. Tank will remain at 30 to 35 psi. “Use this method when you know that the refrigerant was not contaminated before reclaiming.”
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