Before using a recovery unit to remove a charging charge, you should take certain Precautions. These measures include ensuring that the charging hoses are UL recognized and have ball valve ends. Shorter hoses allow for more efficient charging and reduced environmental impact. A quality recovery unit should have a large condenser, a high-pressure cutout switch, and a 510 psi compressor protection regulator. There are some manufacturers that also offer a subcooling feature to further protect you and the environment.

Using a recovery unit to remove a charge

Before removing a charged cylinder, it is important to check the position of the service valves, recover the charge by draining the recovery tank, and change the oil in the service valves. Before removing the charge, it is also essential to evacuate the recovery tank. In some cases, it may be necessary to switch to liquid charging. During this process, a recovery unit may need to be retrofitted to a system that uses R-410A.