Part 2:Common Screw Air Compressor Problems and Solutions: A Complete Troubleshooting Guide

2026 07/16

Continuing from the first article：Common Screw Air Compressor Problems and Solutions: A Complete Troubleshooting Guide

5. Compressor Will Not Start

Possible Causes	Solutions
Power supply failure Blown fuse Faulty contactor Emergency stop activated PLC or controller fault	Check the electrical supply. Inspect the control cabinet. Verify contactors and wiring. Reset protection devices if appropriate. Consult qualified technicians for controller faults

6. High Energy Consumption

Possible Causes	Solutions
Dirty air filter Air leakage Excessive operating pressure Poor maintenance Incorrect compressor sizing	Replace filters. Repair air leaks. Optimize pressure settings. Follow a preventive maintenance schedule. Consider a Permanent Magnet VSD compressor for variable air demand.

7. Water in the Compressed Air System

Possible Causes	Solutions
Refrigerated air dryer malfunction Automatic drain failure High humidity Blocked water separator	Service the air dryer. Clean or replace drains. Drain the air receiver tank regularly. Inspect moisture separation equipment.

8. Frequent Automatic Shutdown

Possible Causes	Solutions
High operating temperature Electrical overload Pressure abnormalities Sensor malfunction Controller protection	Check alarm codes. Inspect sensors and wiring. Verify operating temperature. Correct the underlying fault before restarting the compressor.

Preventive Maintenance Is the Best Solution

Although screw air compressors are designed for continuous industrial operation, their long-term reliability depends on regular maintenance rather than reactive repairs. Many of the problems discussed in this guide—such as overheating, unstable pressure, oil carryover, and unexpected shutdowns—can be prevented by following a structured maintenance schedule.

Preventive maintenance not only helps reduce downtime but also improves energy efficiency, extends component life, and lowers the overall cost of ownership.

A well-planned maintenance program should include the following routine inspections:

Check the compressor oil level before operation.
Monitor discharge pressure and operating temperature.
Inspect the air filter for dust or blockage.
Replace the oil filter and compressor oil at the recommended service interval.
Replace the oil separator when differential pressure reaches the replacement limit or according to the maintenance schedule.
Clean the oil cooler and ventilation system regularly.
Drain condensate from the air receiver tank and compressed air treatment equipment.
Inspect electrical wiring, terminals, and safety protection devices.
Check the compressed air pipeline for leaks.
Record maintenance activities to help identify recurring issues.

Consistent preventive maintenance reduces the risk of unexpected failures and helps keep your compressed air system operating at peak efficiency.

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FAQ

Q1:What is the most common screw air compressor problem?

A:Overheating, pressure loss, clogged filters, excessive oil carryover, and air leakage are among the most common issues found in industrial screw air compressors. Most of these problems can be prevented through routine maintenance.

Q2:Why does my screw air compressor keep shutting down?

A:Frequent shutdowns are usually triggered by protective systems responding to high temperature, pressure abnormalities, electrical overload, or sensor faults. Always review the alarm code before restarting the compressor.

Q3:Can poor-quality spare parts affect compressor performance?

A:Yes. Low-quality filters, lubricants, and separators may reduce filtration efficiency, increase pressure loss, and accelerate component wear. Using high-quality replacement parts helps improve reliability and reduce long-term maintenance costs.

Final Thoughts

Most screw air compressor failures begin as small maintenance issues rather than sudden mechanical breakdowns. By recognizing early warning signs and responding quickly, operators can prevent expensive repairs, reduce downtime, and improve overall system reliability.

A successful maintenance strategy combines routine inspection, preventive servicing, and the use of high-quality replacement parts. Whether you are maintaining a single compressor or an entire compressed air system, investing in proper maintenance will help maximize equipment performance, extend service life, and reduce operating costs.

For industrial facilities where compressed air is critical to daily production, preventive maintenance is not simply a recommendation—it is an essential part of ensuring stable and efficient operations.

Need Professional Screw Air Compressor Solutions?

OSMAN AIR COMPRESSOR specializes in reliable compressed air solutions for industrial applications worldwide. Our product range includes:

Permanent Magnet VSD Screw Air Compressors
Fixed Speed Screw Air Compressors
Two-Stage Screw Air Compressors
Integrated Screw Air Compressors
Refrigerated Air Dryers
Desiccant Air Dryers
Air Receiver Tanks
OEM Compressor Spare Parts

Whether you are looking for a new compressor system or genuine replacement parts, our experienced team is ready to provide professional technical support and customized solutions tailored to your application.

Looking for the right compressed air solution? Contact OSMAN AIR COMPRESSOR today to discuss your project with our specialists.

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