Rotary Screw Compressor Maintenance

Posted on: February 11, 2021

High quality rotary screw compressors such as those offered for sale by Quincy Compressor are designed, engineered and built to provide many years of reliable service. However, a screw-type air compressor is a complex machine consisting of many moving (and non-moving) parts and components. Regular preventive maintenance is essential for ensuring efficient operation, a long air compressor lifespan and reduced downtime due to the need for unscheduled repairs.

Whether you own a high pressure, low pressure or combined screw air compressor, your best source regarding proper machine maintenance is the product manual. Your manufacturer may recommend the performance of routine maintenance at regularly scheduled time intervals or by monitoring the number of running hours. In general, maintenance of rotary screw air compressors entails the following areas:

  • Airends: The airend, or the screw element, is the heart of any rotary screw compressor: This is where the actual compression takes place. Airends can be damaged by excessive heat, contamination in the air and even dirty rotary screw compressor fluid. Your preventive maintenance procedure should include regular airend inspections — excessive noise and vibration can also be a telltale sign of an airend issue.
  • Drive train: Check the rotary compressor’s drive train to ensure it is properly aligned and that the gear drives are properly lubricated. The tension of V-belt drives should be adjusted approximately every 500 hours. Immediately replace frayed or worn belts.
  • Motor: Keep the motor bearings properly lubricated and replace them before they wear out. Also monitor the ampere draw to minimize the likelihood of overloading. Maintaining sufficient ventilation in the compressor room or operating environment can go a long way toward maximizing the motor’s lifespan.
  • Filters: One of the easiest and most cost-effective ways to prevent premature wear is to replace your rotary compressor’s filters on a regular basis, as this will reduce airend wear and component contamination. Replacement of air inlet filters is recommended every two thousand hours, and you should change the fluid filters every one thousand hours.
  • Lubricants: Lubricants perform the vital functions of removing contaminants, protecting moving parts from excess wear and keeping the compressor cool. The best advice regarding when to change rotary screw compressor fluid is to adhere to the manufacturer’s recommended schedule. Regular oil sampling can help to lengthen the lubricant’s lifespan, and can affect warranty compliance in some cases.

Other general rotary screw air compressor maintenance tips include keeping the machine as clean as possible. In addition to damaging compressor components, dirt and debris can actually cause the temperature of the compressed air to increase. Also avoid operating the compressor at high temperatures for extended periods of time.

Contact Us for More Useful Rotary Compressor Maintenance Tips and Advice

With nearly 100 years of industry experience, Quincy Compressor is a reliable source for helpful compressor maintenance information. We also offer a wide selection of premium rotary screw air compressors for a wide range of industrial applications. Contact us directly for additional information or get in touch with the authorized Quincy distributor in your local area. Our partners specialize in providing parts and recommendations for a proper planned maintenance schedule. To locate your advisor, visit our sales and service locator.

Learn more about why Quincy Compressor is one of the top rotary screw air compressor manufacturers.