Q Refrigeration
Choosing the right recovery method
systems or where there is no alternative connection possible.
liquid containing location). Once the liquid is removed, a vapour recovery is used to finish the recovery.
Liquid Recovery: Push-pull recovery:
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Vapour recovery is used mainly for smaller equipment. To set up for vapour recovery, the low pressure service hose (blue) and possibly the high pressure service hose (red) from your gauge manifold are connected to a vapour connection on the equipment (i.e. discharge lines, suction lines, top of vessel, etc.). The accessory service hose (yellow) is connected to the inlet port on the recovery machine and another service hose is connected from the recovery machine to the recovery tank. This is the slowest method of recovery and is only recommended for very small
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Most recovery machines are capable of directly handling liquid refrigerants but they may use different methods to protect the internal components and some require fairly consistent monitoring from the operator to avoid high pressure cut outs. For liquid recovery the set-up is the same as for vapour recovery except that the high side service hose is connected to the receiver (or other
The push-pull recovery method is the least understood method of recovering refrigerant, perhaps because it’s not always intuitive that the method will work. Not only does it work; in most cases it can make Please see ‘Quick’ on page 29
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