Refrigeration Oil Pump
When adding oil to a compressor, there is a danger of introducing contaminants into the refrigeration system. This can be prevented by adding oil to the compressor with an oil pump like the one shown in Figure SP-6-3.
This pump can operate against system pressures up to 250 psig, eliminating the need to remove the charge from the system. The pump mounts on a one-gallon oil container with a sealed cap. Because of this, the pump does not need to be removed until the container is empty. The pump is connected to the system by a refrigerant charging hose or with copper tubing. A siphon kit can be used with the oil pump when it is necessary to remove oil from the compressor.
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