Eight types of common faults and solutions for air compressors

 

The common eight types of failures and basic maintenance solutions are summarized as follows:

 

1. The air compressor cannot be started. First check for control voltage. If not, check whether the fuses are in good condition; if there is control voltage, check whether the control relay and time relay are operating normally.

 

2. The air compressor does not start smoothly. Automatic shutdown after starting for a few seconds From the electrical aspects, such as whether the automatic air switch is off, whether the voltage is normal, whether the closing degree of the intake butterfly valve is normal (the compressor cannot be started with load), and the contactor and contactor during Y-△ startup Whether the three phases of the motor are normal, etc.

 

3. The air compressor does not supply air. Check whether the control cylinder is in motion. If there is motion, check whether the butterfly valve has a mechanical fault; if there is no fault, check whether the loading electromagnetic coil has suction; after eliminating the mechanical fault and coil fault of the solenoid valve, check the sub-circuit where the solenoid valve is located one by one.

 

4. The exhaust pressure of the air compressor is too low. First, check the pressure before and after separation, whether there is air leakage in the manual valve and the regulating solenoid valve; Readjust etc.

 

5. The air compressor is shut down due to oil injection at the inlet. First check whether the piston and spool of the oil cut-off valve are stuck, and whether the mechanical part is normal; if normal, check the one-way valve and reassemble or replace it.

 

6. The exhaust temperature of the air compressor is too high. The exhaust temperature is generally 80-95°C. If there is not enough lubricating oil cooling, the temperature will be too high and cause failure. First of all, check whether the ambient temperature, compressor lubricating oil, oil level, oil quality, cooling fan, etc. are normal; Whether it is normal, if the diaphragm is damaged, the temperature control valve core does not work, etc., it needs to be replaced; check whether the oil filter is dirty or needs to be replaced.

 

7. The air compressor consumes a lot of oil. Check whether the oil content of the condensed water discharged from the trap is too large, whether the oil level of the compressor is too high, whether the opening pressure of the pressure valve is normal, whether the oil return pipe is blocked, whether the oil separation core is blocked, etc. The above problems will affect fuel consumption and should be dealt with in time.

 

8. The air compressor will automatically stop during operation. First, check whether the machine is normal; then check whether the automatic switch and thermal relay operate, whether it causes the cooling fan motor to stop, or the exhaust temperature is too high, or the pressure is too high, and whether the motor voltage is normal.

 

Sollant Group-Professional Compressed Gas Solutions Provider