CAUSES AND SOLUTIONS FOR EXCESSIVE CURRENT IN SCREW AIR COMPRESSORS

The normal current of a screw air compressor is the rated current plus 1.15%. So what are the reasons for the motor current being too high and how to deal with it?

Reason 1: The ambient temperature of the air compressor is too high.

Solution: The air compressor should be equipped with an air duct exhaust device.

Reason 2: The three-phase voltage of the air compressor is unstable, lacks phase, and the voltage is too low (less than 10%).

Solution: Improve factory power system.

Reason 3: The air compressor motor temperature controller is faulty.

Solution: Replace the air compressor temperature controller.

Reason 4: The air compressor overload protector is faulty.

Solution: Replace the air compressor overload protector.

Reason 5: The air compressor starter contacts are in poor contact.

Solution: Maintain the air compressor starter contacts.

Reason 6: The oil-gas separator of the air compressor is blocked.

Solution: When the pressure difference of the air compressor is greater than 0.8-1kg, the oil-gas separator should be replaced.

Reason 7: The air compressor motor bearing is not filled with oil.

Solution: Fill the motor bearing with butter.

Reason 8: The air compressor motor bearing is damaged.

Solution: Replace the motor bearing.

Reason 9: The air compressor motor has poor insulation.

Solution: Remove the motor and do insulation strengthening.

Reason 10: The air compressor motor wiring is loose.

Solution: Retighten the motor wiring.

Reason 11: The air inlet of the air compressor is blocked.

Solution: Clean and maintain the air inlet of the air compressor.

Reason 12: The air filter of the air compressor is blocked.

Solution: Replace the air filter.

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