Summer Preventative Maintenance For Your Compressed Air System

During the summer, there are a few extra challenges your compressed air system faces. Heat and humidity can cause all sorts of problems if you don’t prepare your system to adequately address them. Here are a few simple compressed air summer maintenance tips to keep your system running efficiently.

Checking Your Compressed Air System

compressed air summer maintenance tips

  • Heat Exchangers – Check your after coolers and oil coolers to make sure they are clean and fans are operating correctly. These coolers are your primary defense for keeping your oil temperatures acceptable and removing the bulk of your liquid water from your compressed air system.

summer maintenance for compressed air systems

  • Condensate Drains – With the extra humidity there will be extra water. Check all of your drains and drain lines to ensure they are sized correctly and operating properly. If you are using timer operated drains, you will need to adjust your frequency to allow for the increase in condensate.

Gardner Denver Heated Purge Dryer

  • Air Dryers – Both refrigerated and desiccant compressed air dryers need to be checked and prepared for the summer heat and humidity. Condenser coils and condenser fans should be checked on refrigerated condensate seperatorsdryers. Pre-filters and drains should be checked and serviced on desiccant dryers to protect the desiccant bed from slugs of liquid water and oil.
  • Oil/Water Separators – All the water that your drains and dryers are removing should be routed to an Oil/Water Separator. These separators help you safely and legally dispose of your compressed air condensate. Be sure to replace all carbon bags and filters every six months to ensure proper operation.


Lewis Systems & Service Co., Inc. carries a full line of drains, dryers and filters to help your compressed air systems to deal with the heat and humidity that the summer brings. So give us a call if you find yourself “under water” this summer.


Cost Saving Tips for Rotary Screw Air Compressors

Rotary screw air compressors are complicated pieces of machinery and let’s face it, they are not inexpensive. If you look at the total cost of ownership, however, the initial purchase price is minimal compared to the energy cost required over the life of your compressor. Here are a few money saving tips that can help reduce the cost of operating your equipment:

  • Change your air filter regularly
    • The intake air filter is your first line of defense in protecting your compressor and its lubricant. A dirty, clogged filter element causes loss of efficiency and reduces lubricant life. A clean element will help your compressor run cooler and use less energy.
  • Change your oil filter every 1000 hours
    • Plain and simple: if you don’t change your oil filter element you’ll do damage to your compressor. This inexpensive part removes dirt and abrasives from the lubricant. When changed regularly, it will extend the life of your lubricant, protect your air/oil separator and reduce wear on your compressor.
  • Change your air/oil separator every 4000 hours or at least annually
    • If you have oil-flooded rotary screw compressors the air/oil separator provides the final removal of oil from the air stream. Contaminant and particulate build-up in the element will cause pressure drop across the separator to increase. As a rule of thumb, every 2 PSIG increase in pressure drop raises BHP use by 1%. Servicing your air/oil separator will also keep your oil carryover low and reduce lubricant consumption.
  • Keep your aftercooler/oil cooler clean
    • Check for dirt or particle accumulation on the coolers. As the exterior fin surfaces become clogged, dirty and damaged, your coolers lose their ability to effectively dissipate heat. Increased running temperatures can damage your compressor and reduce the life of synthetic lubricants.

  • Oil Analysis
    • Synthetic lubricants do a great job of protecting your compressor and holding up in harsh environments. However, they don’t last forever. Take the guesswork out and get professional analysis done regularly.  It will tell you if there are any issues. As synthetic lubricants break down they can become corrosive and create varnishes, so being proactive in this area will save a lot of money in the long run. (Lewis Systems offers free analysis on all lubricants that are purchased from us).

These aren’t overly complicated things to do, but they can be overlooked easily. Our Service Team would be happy to help you out with developing a routine maintenance program that fits your needs and budget. Proactive maintenance is a lot less expensive than reactive maintenance.

Having a Rental Air Compressor Plan

So what happens when your air compressor goes down?  Hopefully, your backup compressor fires right up and your production doesn’t miss a beat.  But things don’t always work out that way.  At some point in time, you may have to get a rental compressor. Having a rental air compressor plan in place will save you a lot of time and frustration. Here are a few things to think about ahead of time:
rental air compressor plan

  • Where would this compressor be installed? Do you have room and easy access in your current compressor room, or will it need to be installed in a remote location of the plant?
  • What are your pressure and CFM requirements? Knowing this ahead of time will expedite the process of finding a rental.
  • How would you incorporate the rental into your existing compressed air system?rental air compressor tips
  • Will you need an extra hose to connect? If it’s necessary to put the compressor in a remote location, make sure you know how much hose you’ll need to tap in to your plant system.
  • You’ll also need extra wire to run power to the compressor. Knowing how much you need will save time.
  • Keep air quality in mind as well. If you have to locate the rental away from your other air treatment equipment, consider a dryer and filter to go along with the rental compressor.
  • If it’s going to be a long-term rental, be sure to find out up front who is responsible for the routine maintenance and any repairs necessary on the rental.

At Lewis Systems & Service Co., Inc., we have a wide variety of rental compressors available-from reciprocating to large flow oil-free rotary screw compressors.  We also have NFPA 99 medical compressed air and vacuum packages available for short – and long-term rentals.  Contact us and we’ll be happy to help you out.

Cold Weather Diagnostic for Compressed Air Systems

With colder weather coming soon, compressed air systems that are subject to lower temperatures may deal with slow starting, possible control line freeze problems, and condensate lines freezing.  To help prevent some of these problems, heat lamps can be installed close to the lines to prevent freezing. Also, applying heat tape with a thermostat to control lines and condensate lines is a great way to protect your equipment located outside.  However, keep in mind that anything installed on the lines themselves might have to be removed when the equipment is being serviced.

Here is a basic cold weather diagnostic outline:

  • Check insulated areas and make sure the heat is staying inside and the cold is staying outside.
  • Also check any weather stripping and replace areas that are worn out and not working properly.
  • Check condensate drains throughout your system for proper operation. Excess water in your lines and freezing temperatures are not a good mix.
  • Check the intake for your air compressor. If it’s exposed to the outside elements, your inlet air filter can be damaged from ice and snow.
  • Compressed air receivers should be protected as well. If condensate is allowed to collect at the bottom of the tank it can freeze.  Insulate any outside pipes feeding the tank as well as the condensate drain for the tank.
  • Kind of a no brainer here, but make sure your compressed air dryer and compressed air filters have been serviced and are operating correctly. Their job is to remove condensate from your compressed air system.  The less condensate in the system the less there is to freeze and cause problems.

Contact us today if you need any help with addressing your cold weather vulnerabilities. Taking these proactive steps now, can help prevent some major problems once it turns cold outside.