STARTING METHOD FOR A REFRIGERANT RECOVERY, RECYCLING AND RECHARGING SYSTEM
A method is provided for operating a refrigerant recovery, recycling and recharging system having a compressor to recover, recycle, and/or recharge the refrigerant in a closed refrigeration circuit coupled to the system. The method includes compressing refrigerant with the compressor, stopping the compressor, re-starting the compressor, and relieving a pressure differential across the compressor at the time of re-starting the compressor.
1 . A method of operating a refrigerant recovery, recycling and recharging system having a compressor to at least one of recover, recycle, and recharge the refrigerant in a closed refrigeration circuit coupled to the system, the method comprising:
compressing refrigerant with the compressor;
stopping the compressor;
re-starting the compressor; and
relieving a pressure differential across the compressor at the time of re-starting the compressor.
2 . The method of claim 1 , wherein the pressure differential is relieved by opening a valve to fluidly couple an inlet of the compressor with an outlet of the compressor along a fluid path around the compressor.
3 . The method of claim 2 , wherein the valve is opened for a period of time prior to re-starting the compressor.
4 . The method of claim 3 , wherein the valve remains open while the compressor is started.
5 . The method of claim 4 , wherein the valve remains open for a period of time after the compressor is re-started.
6 . The method of claim 3 , wherein the period of time prior to re-starting the compressor is 5 seconds.
7 . The method of claim 6 , wherein the valve remains open while the compressor is started.
8 . The method of claim 7 , wherein the valve remains open for a period of time after the compressor is re-started.
9 . The method of claim 8 , wherein the period of time after the compressor is re-started is 5 seconds.
10 . The method of claim 5 , wherein the period of time after the compressor is re-started is 5 seconds.
11 . The method of claim 2 , wherein the valve is actuable by a controller to move between open and closed positions, and the valve is opened upon the controller receiving a compressor re-start command.
12 . A method of operating a refrigerant recovery, recycling and recharging system having a compressor to at least one of recover, recycle, and recharge the refrigerant in a closed refrigeration circuit coupled to the system, the method comprising:
compressing refrigerant with the compressor;
stopping the compressor;
re-starting the compressor; and
opening a valve coupling an inlet and an outlet of the compressor along a fluid path around the compressor, thereby reducing a pressure differential across the compressor at the time of re-starting the compressor.
13 . The method of claim 12 , wherein the valve is opened for a period of time prior to re-starting the compressor.
14 . The method of claim 13 , wherein the valve remains open while the compressor is started.
15 . The method of claim 14 , wherein the valve remains open for a period of time after the compressor is re-started.
16 . The method of claim 13 , wherein the period of time prior to re-starting the compressor is 5 seconds.
17 . The method of claim 16 , wherein the valve remains open while the compressor is started.
18 . The method of claim 17 , wherein the valve remains open for a period of time after the compressor is re-started.
19 . The method of claim 18 , wherein the period of time after the compressor is re-started is 5 seconds.
20 . The method of claim 15 , wherein the period of time after the compressor is re-started is 5 seconds.
21 . The method of claim 12 , wherein the valve is actuable by a controller to move between open and closed positions, and the valve is opened upon the controller receiving a compressor re-start command.