Reasons for Difficult Start-up of Air Compressor after Shutdown

1. Check whether the fuse is burned and blown, causing the circuit to fail and cannot be powered on.

2. Motor failure. The insulation layer is aged or the temperature is too high, the insulation layer is melted, so that the insulation effect is insufficient and leakage occurs.

3. The motor is locked and overcurrent. Insufficient lubricant, or foreign matter stuck in the nose, so that the current is too large to start.

4. PLC control failure. The program may have wrong code, garbled code; or electrostatic failure, so that the element circuit failure.

5. The contactor or frequency converter is burned. Internal components contact, poor work, electric shock melting, "arc".

6. Sensor failure. The pressure sensor or temperature sensor may be in poor contact, the wiring is reversed or even damaged, which will cause it to fail to start. At this time should contact with professional after-sales personnel maintenance matters.

7. Check whether the power supply voltage is normal. The supply voltage of the screw air compressor is too low, and the undervoltage of the power supply will cause it to fail to start.

8. Check all wiring ports to see if they are loose and tightened.

Air compressor is an air compressor, which is a device that provides compressed air for the production and manufacturing of enterprises. It compresses the atmospheric air sucked from the outside to make it have a certain pressure and is widely used in all walks of life. The importance of compressed air is self-evident, equipment start-up, mechanical operation, production work, etc. are inseparable from the compressed air. If the air compressor can not start, the user will be very upset, will affect the smooth progress of the production work. The main reasons why the air compressor cannot be started are as follows:

electrical aspects: first check whether the power supply wiring of the air compressor is correct, whether the power switch is correctly closed, whether the power fuse is blown, and whether the power supply voltage reaches 90% or more of the rated voltage. Check whether the components of the pressure relay of the air compressor are damaged and whether the given value of the pressure relay is appropriate.

Operation fault: when starting, the outlet switch is not opened, the pressure of the outlet is set too high, the switch is not restored after the electrical circuit, and the setting of voltage and current is unreasonable.

The general screw air compressor has an automatic protection device, so when some parts of it fail, it cannot be started normally. Start, stop control loop, due to more electrical components, more control points, the failure rate is relatively more. Start button, stop button or switch, etc., due to improper operation, may cause the host can not start or fault shutdown. Common mechanical faults that cause the air compressor to fail to start normally include: start button, stop button, emergency stop button, control panel failure, etc. If you do not pay attention to the operation, the button will be stuck on the edge of the button shell and cannot be reset.