Common air compressor eight kinds of fault processing

Common air compressor eight kinds of fault processing

1. The air compressor cannot be started

first check for control voltage. If not, check whether the fuse is 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

after starting up for a few seconds, the machine will automatically stop from the electrical equipment, such as whether the automatic air switch takes 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 whether the three phases of the contactor and the motor are normal during Y-△ starting.

3. The air compressor does not supply air

check whether the control oil cylinder moves, and if so, check whether the butterfly valve has mechanical failure. If there is no fault, check whether the loaded electromagnetic ISV coil has suction. After eliminating the mechanical fault and coil fault of ISV solenoid valve, check the sub-circuit of solenoid valve ISV one by one.

4. Air compressor exhaust pressure is too low

first, check the pressure before and after separation, whether the manual valve and the regulating solenoid valve 2SV are leaking; then check whether the gas pipeline is leaking, whether the butterfly valve is fully opened, whether the intake regulator is working normally, and whether the solenoid valves 3SV and 8SV are leaking, Whether the pressure switch IPS needs to be readjusted, etc.

5. Air compressor oil injection and stop

first check whether the oil cut-off solenoid valve 5SV has voltage and whether the mechanical part is normal. If it is normal, check the check valve and reassemble or replace it.

6. air compressor exhaust temperature is too high exhaust temperature is generally 80~95 ℃. If there is not enough lubricating oil to cool, 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. Then check whether the oil cooler and after-cooler are clean, and whether the temperature control valve element, the voltage of the oil cut-off solenoid valve and the valve body are normal. If the diaphragm is damaged and the temperature control valve core does not operate, it needs to be replaced. After that, check whether the oil filter is dirty or needs to be replaced.

7. Large fuel consumption of air compressor

check whether the oil content of the condensate discharged from the trap is too large, whether the compressor oil level is too high, whether the opening pressure of the small 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. Automatic shutdown of air compressor during operation

first, check whether the machine is normal and automatically shut down; then check whether the automatic switch and thermal relay act, 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.