I recently had to change the compressor.The system still uses R22.I recovered the gas and re-used it.The unit had a Dorin Mod: K280CC and I had to install the new model H280CC.
I had to flush out the synthetic oil in the new compressor and add mineral oil.The same quantity.
A few days later I went to check on the unit,and found the compressor low on oil.I topped it up.Was called back and found the oil level on minimum.As the oil separator was looking old,I changed it and charged the separator as per manufacturers instruction.I once again topped up the compressor.
Yesterday went back to check and found the oil level down to minimum again.The pipe run is approx.7m.
I have done other repairs on other units and not encountered this situation before.
Can anyone give me an idea what I have overlooked?Do these Dorins run with such low oil levels?Help, please people.