How to stop the air compressor when it is pumping

When the air compressor suddenly stops during pumping, this may be caused by a variety of reasons. Here are some possible causes and their solutions:

1. electrical fault

1. power issues:
   • check whether the power supply voltage is stable, unstable or too low voltage may cause the air compressor to start difficult or stop automatically.
   • Check whether the power supply wiring is correct and whether the power switch is closed to prevent someone from turning it off by mistake.
   • Check whether the power supply fuse is blown and whether the power supply voltage reaches 90% or more of the rated voltage.
2. Fault of control relay and time relay:
   • check the operation of the control relay and the time relay, the failure of these components may cause the air compressor to fail to receive the correct start signal or stop automatically.
3. Damaged fuses and relays:
   • inspect fuses and relays for damage or erratic connections. If the relay setting value is too high, slight voltage fluctuation may cause disconnection. At this time, the upper limit of the high-voltage relay can be adjusted appropriately to reduce the limit of the low-voltage relay.

2. pressure and temperature problems

1. pressure switch fault:
   • the pressure switch is a major guarantee for the work of the air compressor, which can ensure that the air compressor stops working after the pressure reaches the set value. If the pressure switch fails, the air compressor may stop as soon as it is pumping. At this time, a new pressure switch needs to be replaced.
2. Abnormal pressure:
   • check whether the pressure control system of the air compressor is normal, including the pressure sensor, pressure regulating valve and other components. Failure of these components or blockage of the pipeline may cause the pressure to be too high or too low, thus triggering the shutdown protection mechanism of the air compressor.
3. Exhaust temperature too high:
   • the exhaust temperature of the air compressor should usually be between 80 and 95 degrees Celsius. If the exhaust temperature is too high, it may be caused by high ambient temperature, compressor lubricating oil problems, low oil level or poor oil quality, cooling fan failure or temperature control valve component damage. These faults need to be checked and corrected at this time.

3. mechanical failure

1. motor overload:
   • motor overload means that the air compressor motor bears a load exceeding its rated power during operation, causing the motor to stop working. This happens when the air compressor works for a long time or the air circulation is not smooth. At this time, it is necessary to check whether the motor is overloaded and reset a reasonable load.
2. Cooling fan failure:
   • the air compressor needs sufficient air circulation to cool the motor and compressor. If the fan fails, it will cause poor air circulation, which will cause the air compressor to stop. At this time, a new fan needs to be replaced.
3. Slide valve fault:
   • the slide valve is an important part of the hydraulic system of the air compressor, which can control the work and stop of the compressor. When the slide valve fails, it will cause the air compressor to stop. At this time, a new slide valve needs to be replaced.

4. other faults

1. unload solenoid coil fault:
   • short circuit or damage of unloading solenoid valve coil may cause abnormal shutdown of air compressor. At this time, it is necessary to check the resistance and status of the unloading solenoid valve coil, and replace it with a new coil if necessary.
2. Oil pressure switch fault:
   • the oil pressure switch of the air compressor can control the oil pressure and protect the lubrication system. When the oil pressure is insufficient, the oil pressure switch will trigger the shutdown protection. At this time, a new oil pressure switch needs to be replaced.
3. Intake valve or butterfly valve fault:
   • check whether the closing degree of the intake valve or butterfly valve is normal. The failure of these components may cause the air compressor to fail to intake or supply air normally.

5. maintenance recommendations

1. regular maintenance:
   • regular maintenance of air compressor is an important measure to prevent failure. This includes replacing lubricating oil, cleaning coolers, checking and replacing bad seals and valves.
2. Professional maintenance:
   • if you encounter a fault that cannot be solved by yourself, it is recommended to contact a professional air compressor maintenance personnel or service provider for further inspection and maintenance.

In summary, the reasons for the shutdown of the air compressor may involve electrical, pressure and temperature, mechanical and other aspects. When solving the problem, it is necessary to investigate one by one according to the specific situation and take corresponding maintenance measures.