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Curtis-Toledo air compressor model ES-30

Someone put too much oil in the crankcase, which I guess caused the amperage of the motor to increase blowing the fuses. I removed the excess oil but the amparage is still high, could there be oil still in the cylinders?

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Re: Curtis-Toledo air compressor model ES-30

Try putting a few drops of really light oil into the intake while running (WD40?) this may thin the oil left in the cylinders and valves sufficiently to let it get blown out (assuming you are venting to the atmosphere) Also continuous operation will heat the oil and make it thinner helping to remove it and eventually reducing the current.

Posted on Oct 07, 2007

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PAC260 compressor cuts off and the red caution light comes on and it just blows room temperature air. If I press the reset button at the rear it blows cold air again.

There are actually several conditions that could be causing your compressor to draw excessive amperage. If the system is low on its refrigerant charge, the compressor will draw less amps than normal because it is not working as hard as it would with a full charge so low refrigerant is probably not the problem. It is true that the refrigerant vapor being drawn into the compressor is used to cool the windings and if the windings are not cooled it will overheat and trip an internal protective device, but it will not draw high amperage. If there is a problem with the voltage causing it to be lower than normal, the compressor will draw more amperage. A lower than normal voltage is rarely to be found though. If air or some other noncondensable gas has been introduced into the refrigerant system, higher than normal discharge pressures will exist and the expansion device that meters the refrigerant into the evaporator coil (the indoor coil) will not works as it is supposed to. If someone has recently accessed the
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Condenser motors all have oil in them. If the unit is overcharged with refrigerant and does not have an accumulator, (cylindrical canister)
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