The Refrigerant Recovery Unit, Model 3445, is part of the Lab-Volt Refrigeration and Air Conditioning Accessories. The Refrigerant Recovery System is designed to enable students to perform refrigerant recovery of a refrigeration system. The recovered refrigerant is stored in an external container. The refrigerant can then be sent to a service center to be recycled. The refrigerant can be recovered in vapor or liquid form.
A low pressure indicator is provided to monitor the pressure condition on the suction side of the recovery system. A filter dryer and an oil separator are used to condition the refrigerant before it enters the recovery system compressor. At the high pressure side of the recovery system compressor, a second oil separator insures good lubrication by returning the oil at the suction side of the compressor, thus avoiding oil migration to the storage tank.
A high pressure indicator is also provided to monitor the pressure condition on the discharge side of the compressor. Furthermore, a high pressure controller will automatically shut off the compressor if the discharge pressure exceeds a preset limit.
A forced-air condenser is used to transform the high pressure refrigerant vapor to a high pressure liquid refrigerant. Compatible with R12, R22, R134a, R500, R502, and MP39 refrigerants. Since it is recommended that the compressor oil be changed frequently, the compressor oil drain has been conveniently located at the bottom of the unit. The filter is also easily accessible at the back of the unit, after removal of the access door.