Knowledge

Air compressor common fault (Three)



Eleven, unloading pressure continues to rise

1) Severe shaft leakage 2) Unloading valve original position changes

Twelve, shut down after the air from the air filter oil mist spray

Compressor check valve leaked or damaged

Thirteen, displacement, pressure regional value

1) Air consumption exceeds the displacement 2) Blocking of the air filter element 3) Leakage of the safety valve 4) Failure of the compressor 5) Leakage of control line between the oil separator and the unloader valve

Fourteen, air compressor fuel consumption too much

1) The oil level is too high 2) The oil-gas separator filter is invalid 3) The foam is too much 4) The oil-gas separator filter oil return pipe connector at the orifice blocking 5) The oil is wrong

Fifteen, with instructions to show pink

1) Air compressor load cycle is too short 2) U-tube pressure differential adjustment is not correct 3) Compressor output pressure is too low 4) Worm turbine shaft is not rotating 5) Molecular sieve sector sealing bad 6) Compressor output temperature too High 7) Drainage system failure

Sixteen, regeneration air temperature is too low

1) Air compressor load cycle is too short 2) Regenerative air inlet pipe is blocked 3) Air compressor is not working properly

Seventeen, the appearance of air compressor oil overflow

1) Leakage of oil seal or oil seal defect 2) Leakage of main shaft leading to oil seal leakage 3) Bleed of joint surface, loosening of inlet / return tubing fitting 4) Wear of belt due to over-tightness causing wear of main bearing bush 5) Casting or machining defects

Eighteen, unit current

1) The voltage is too low 2) The wiring is loose, check if there is any trace of heating and scorching 3) The unit pressure exceeds the rated pressure 4) The oil separation plug is blocked and needs to be replaced 5) The contactor is faulty 6) The main unit is faulty Turn the car number to check) 7) The main motor failure (remove the belt with the number of hand car check) and measure the motor starting current

Nineteen, the unit can not start

1) The fuse is broken 2) The temperature switch is broken 3) Check the main motor or the host for jamming, and whether the motor is reversed 4) The main motor thermal relay action, reset 5) Fan motor thermal relay action, reset 6) The transformer is broken 7) The fault is eliminated {PLC control unit} 8) The PLC controller is faulty

Twenty, when the unit starts large current or trip

1) user air switch problem 2) the input voltage is too low 3) the star delta conversion interval is too short (usually 10-12 seconds) 4) intake valve failure {open too much or stuck} 5) wiring loose, check There is no signs of fever 6) the host failure {can remove the belt with the hand wheel number to check} 7) the main motor failure (remove the belt with the number of hand cars to check) and measure the motor starting current

Twenty-one, fan motor overload

1) fan distortion 2) fan motor failure 3) fan motor thermal relay failure {aging}, the need to readjust or replace the new pieces 4) wiring loose 5) cooler blocked 6) exhaust resistance

Twenty-two, the host card stuck, causing the crew to jump

1) The unit uses a low-quality lubricating oil, under high temperature and pressure to make the host frictional resistance increases, causing the host to bite

2) The bearing of the main machine is used for a long time and needs to be replaced 3) The belt or the installation of the wheel is not correct