Cause 1: The air filter is blocked, resulting in reduced intake.

Treatment:
Check and replace air filters regularly.
Use high-efficiency air filters to ensure good air permeability of the filters.
Arrange regular cleaning of compressed air filters, especially in dusty environments, to avoid long-term filter clogging.


Cause 2: The intake valve is not operating properly and is not fully opened.

Treatment:

Cause 3: The oil and gas separator is blocked, resulting in excessive internal resistance.

Treatment:
Check and replace the oil-gas separator regularly, usually every 500 to 1000 hours.
Clean the dust or dirt inside the oil-gas separator to ensure the normal operation of the oil-gas separator.
Use an oil-gas separator that meets the specifications and avoid using poor quality or incompatible parts.

Cause 4: Bleed solenoid valve failure, resulting in internal leakage.

Treatment:
Check whether the discharge solenoid valve is faulty, check the coil, valve seat and seal of the solenoid valve.
Repair or replace the damaged solenoid valve in time.
Check the working status of the solenoid valve regularly to ensure that the solenoid valve acts in time and without leakage.

Cause 5: The pressure setting is too low or the pressure sensor is faulty, the pressure sensor sampling pipe is damaged, leaked or there is liquid water.

Treatment:
Check the pressure setting to ensure that it is within a reasonable range (usually the design standard of the compressor).
If the pressure sensor fails, replace the sensor in time.
Check whether the sensor sampling tube is damaged or leaking, and replace the sampling tube if necessary.
Clear the liquid water in the sensor to ensure its normal operation.

Cause 6: User network and gas equipment aging leakage, resulting in large gas consumption.

Treatment:
Check whether the pipeline network and gas-using equipment are aging or leaking, and repair or replace the leaking parts in time.
Perform a pipeline network pressure test to ensure that all pipeline joints and valves are leaking.
Maintain pipelines and gas-using equipment regularly to avoid gas leakage due to aging.

Cause 7: The new gas point, the actual gas consumption is greater than the air compressor gas production.

Treatment:
Evaluate the gas demand of the new gas point and confirm whether the gas production capacity of the air compressor is sufficient.
If the new gas point causes the gas consumption to exceed the air supply capacity of the compressor, you can consider adding an auxiliary compressor or optimizing the existing system to improve the gas supply capacity.
Adjust the gas volume configuration of the gas point to avoid excessive concentration at one point, which affects the overall gas supply.

Cause 8: The aging host of the air compressor is seriously worn, resulting in reduced exhaust volume.

Treatment:
Regularly check the wear of the main engine, especially key components such as the screw and bearings.
If the main engine is seriously worn, consider overhauling or replacing the main engine components.
Implement a maintenance plan to avoid the performance of the compressor being degraded due to long-term non-maintenance.

In conclusion, if your screw air compressor has low exhaust pressure or reduced exhaust volume, you can check the above possible reasons. In the face of sudden failures, after asking whether to add new gas points and whether to change the air compressor settings, focus on checking the intake valve and pressure sensor. Some situations that used to be sufficient but are not sufficient now are mostly caused by air leakage, aging of air-using equipment, and performance degradation of the air compressor itself.

Most of the above problems can be avoided through regular inspection, maintenance and timely replacement of damaged parts. For each problem, early detection and resolution will help improve the efficiency and service life of the screw air compressor.