Is a low pressure in the refrigeration oil related to the amount of Freon?
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The oil pressure of a refrigerator is below 2 kg; I think it’s a problem with the oil system, but the operator says it’s caused by a low amount of Freon. I’m puzzled – is there any relationship between oil pressure and the amount of refrigerant?
From what the poster says, it seems to be a piston-type refrigeration compressor. If the oil pressure is low, the oil pressure control valve can be adjusted, and the oil filter should be checked to see if the oil has deteriorated. However, sometimes the pressure inside the crankcase does have an impact on the oil pressure.
Check the pressure difference of the oil filter; if low oil pressure is caused by a high pressure difference, the filter element can be replaced.
3# xpwdong I wonder if it might be that there isn’t enough refrigerant in the system, which causes the oil temperature to rise; as a result, the oil pressure also drops. I’m not sure if such a guess is reasonable
Check whether the oil pressure safety valve has internal leakage, causing fluid to flow back to the inlet and thereby reducing the outlet pressure.