2026-04-09Views：
The air compressor cannot be turned on after it is stopped.
When the air compressor can not be started again after shutdown, it may be caused by a variety of reasons. Here are some common causes and corresponding solutions:
power issue:
check whether the power supply is normal, and confirm whether the plug of the air compressor is firmly inserted into the socket.
Check whether the power switch of the air compressor is in the "on" position.
If the frequency conversion air compressor is used, check whether the frequency converter has fault indication.
Control system fault:
check the control panel for fault codes or warning messages.
Restart the control system, sometimes a simple reset operation can solve the temporary fault.
Mechanical problems:
check the motor and compressor head of the compressor for signs of seizure or damage.
For the screw air compressor, check whether the screw rotates flexibly and whether there is any abnormal sound.
Pressure switch problem:
check whether the pressure switch is set correctly to avoid failure to start due to improper pressure setting.
Check the pressure sensor for proper operation.
Cooling system problems:
for water-lubricated air compressors, check whether the cooling water system is working properly, including water pump, water flow and water temperature.
For other types of air compressors, check whether the fan or radiator is clean and free of blockage.
Safety protection device action:
check whether safety protection devices (such as high temperature protection, overvoltage protection, etc.) are triggered, causing the air compressor to fail to start.
Environmental conditions:
confirm whether the ambient temperature and humidity are within the normal working range of the air compressor.
shanghai granklin group product description:
shanghai Granklin Group offers many types of air compressors to meet the needs of different industries and applications. These compressors provide efficient and stable compressed air solutions in the power range of 7.5-250KW.
Water lubricated air compressor: water is used as lubricating medium to provide compressed air without oil pollution, especially suitable for occasions requiring pure compressed air.
Oil-free air compressor: completely oil-free operation to ensure the purity of compressed air, suitable for industries with extremely high air quality requirements.
Variable frequency air compressor: Automatically adjust the motor speed according to actual needs to achieve energy-saving operation and reduce energy costs.
Screw air compressor: It adopts high-efficiency screw compression technology, has the characteristics of compact structure, stable operation and low noise, and provides stable and reliable compressed air.
In addition, the air compressor of Shanghai Granklin Group is equipped with high-quality water filter elements and air filter elements to further ensure the purity of compressed air and the reliability of equipment.
Question: If my Shanghai Granklin Group screw air compressor cannot be started after shutdown, which items should I check first?
Answer: If your Shanghai Granklin Group screw air compressor cannot start after shutdown, first of all, it is recommended that you check the following points:
confirm whether the power supply is normal, and check whether the power switch and plug are firm.
Check whether the fault code is displayed on the control panel, and troubleshoot according to the code prompt.
Check that the pressure switch is set correctly and that the pressure sensor is working properly.
Confirm whether the cooling system (such as fan and radiator) is clean and unblocked. For water-lubricated screw air compressor, check the cooling water system.
If the above inspections are normal, it may be a mechanical part or motor problem. It is recommended to contact professional maintenance personnel for further inspection.
Please note that before performing any inspection or maintenance operations, be sure to disconnect the power supply to ensure your safety. If you are not familiar with the maintenance operation of the air compressor, it is recommended to contact Shanghai Granklin Group or a professional maintenance service provider for assistance.
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