The closed system method uses the refrigeration oil pump to charge oil into the compressor crankcase. The closed system method is performed on an operating…
Author: matt
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…
Purpose — It is important to maintain the proper oil level in the compressor to ensure proper lubrication. This is necessary to avoid possible mechanical…
Oil acid test kits (Figure SP-5-2) require that an oil sample be taken from the system. The test is performed following the specific instructions supplied…
Some sealed-tube test kits like TOTALTEST® can measure the acid/moisture content in refrigerant vapor without the need for an oil sample. The TOTALTEST® procedure is…
Air entering a system contains moisture. Moisture in the refrigerant can create oil sludge, which reduces the lubrication properties of the oil and plugs oil…
Purpose — Refrigeration systems are intended to contain only refrigerant and oil. Anything else in the closed system is considered a contaminant. Contaminants such as…