The refrigerant management system has a service port connection, refrigerant treatment elements and a wet circuit connecting the service port connection to the refrigerant treatment elements. The refrigerant treatment elements are comprised of a refrigerant filter, a compressor, a condenser coil and a tank. The tank has tank head manifolds mounted thereto. The filter, the compressor and the condenser coil being mounted to the tank and connected to the tank head manifolds by respective pairs of tubing. The wet circuit being partially incorporated inside the tank head manifolds and inside the tank between the tank head manifolds. The first tank head manifold connects the service port connection to the refrigerant filter. The second tank head manifold connects the compressor to the condenser coil and to the tank. Conduits inside the tank extending between the first and second tank head manifolds connect the refrigerant filter to the compressor.

A sensor device, system, and method for monitoring the internal pressure and temperature of a refrigerant tank during a recovery operation to control a purge operation of the tank based on the conditions thereof during the recovery operation. The sensor device, system, and method further utilize an external temperature sensor, the external temperature sensor operable to indicate that it is properly positioned on the surface of the tank.

A refrigerant recovery system includes a direct current (DC) motor and digital display and controls enabling an automatic self-test mode to insure proper operation prior to starting to service an HVAC system and a maintenance assist mode to diagnose and suggest maintenance for optimum performance of the refrigerant recovery system.

An apparatus including a first storage tank, a frame positioned at least partially beneath the first storage tank, a first lever having a first end and a second end, and the first lever is pivotally mounted to the frame; and a first scale system positioned beneath the first storage tank, wherein in a first position, the first storage tank exerts a force against the first scale system, and wherein in a second position, the second end of the lever exerts a force on a bottom surface of the first storage tank such that the first storage tank is positioned above, and out of contact with, the first scale system, when the first storage tank is in the second position.

An apparatus including a storage tank, a frame positioned at least partially beneath the storage tank, a lever having a first end and a second end pivotally mounted to the frame, a scale system positioned beneath the storage tank, wherein in a first position, the storage tank exerts a force against the scale system, and in a second position, the second end of the lever exerts a force on a bottom of the storage tank such that the storage tank is positioned above, and out of contact with, the scale system.

An apparatus including a first storage tank, a frame positioned at least partially beneath the first storage tank, a first lever having a first end and a second end, and the first lever is pivotally mounted to the frame; and a first scale system positioned beneath the first storage tank, wherein in a first position, the first storage tank exerts a force against the first scale system, and wherein in a second position, the second end of the lever exerts a force on a bottom surface of the first storage tank such that the first storage tank is positioned above, and out of contact with, the first scale system, when the first storage tank is in the second position.

A sensor device, system, and method for monitoring the internal pressure and temperature of a refrigerant tank during a recovery operation to control a purge operation of the tank based on the conditions thereof during the recovery operation. The sensor device, system, and method further utilize an external temperature sensor, the external temperature sensor operable to indicate that it is properly positioned on the surface of the tank.

An apparatus including a storage tank, a frame positioned at least partially beneath the storage tank, a lever having a first end and a second end pivotally mounted to the frame, a scale system positioned beneath the storage tank, wherein in a first position, the storage tank exerts a force against the scale system, and in a second position, the second end of the lever exerts a force on a bottom of the storage tank such that the storage tank is positioned above, and out of contact with, the scale system.

A compressor system for an air conditioning service system includes a compressor having a compressor case and a compressor head, an inlet, an outlet, a low side passage fluidly connecting the inlet to the compressor head, and a high side passage fluidly connecting the outlet to the compressor head. A low side return passage fluidly connects the compressor case with the low side passage and a first valve is positioned at least partially in the low side return passage and configured to control flow in the low side return passage.

A refrigerant recovery system includes a direct current (DC) motor and digital display and controls enabling an automatic self-test mode to insure proper operation prior to starting to service an HVAC system and a maintenance assist mode to diagnose and suggest maintenance for optimum performance of the refrigerant recovery system.