Know the Importance of VRU Maintenance
April 24, 2015

VRU Routine Planned Preventative Maintenance Importance

Routine planned preventative maintenance and servicing of vapor recovery (VRU) systems can help ensure maximum runtime for valuable VRU systems.  It can also be an important component for compliance with air permits and the NSPS OOOO rule. Using experienced, qualified service representatives to maintain a VRU adds value to the facility.


The purpose of any maintenance routine is to reduce the chance of failure and in doing so increases reliability. The words preventative maintenance imply the benefit of this practice. This is a better practice than the “if it isn’t broke, don’t fix it” rule. Below are reasons that preventative maintenance makes sense, some ideas on what is included in such services and how to get a preventative maintenance service implemented.

Why do routine planned preventative maintenance (PM)?

  1. Maximize the life of the vapor recovery unit (VRU)
  2. Maximum runtime and recovery of vent gas by VRU and minimize air emissions
  3. Ensure the VRU’s design operating conditions match facility operating conditions
  4. Detect and report/schedule repairs with the system before a major problem occurs
  5. Check for and report/schedule repairs of leaks in the system
  6. Preventative maintenance requires less time and money to facilitate than a large repair or replacement
  7. Ensure optimal efficiency of operation
  8. Maximizing runtime reduces reports to regulators for air pollution upset incidents
  9. Detect issues and report/schedule repairs before they become a corrective maintenance issue
  10. In enforcement actions and penalties related to a VRU outage, environmental regulators normally take into consideration the use of routine, scheduled preventative maintenance.

Do I need to keep spare parts?

Facilities should keep certain spare parts on location to ensure quick repairs and/or VRU maintenance. This can save a company money when considering downtime and the cost for a truck to hot shot deliver needed parts to a facility. 

HY-BON supplies its customers a list of suggested spare parts for VRU installations.

What are some typical recommended service items for the typical VRU (depending on unit)?

  1. Determine operational issues
  2. Overall inspection of unit
  3. Change Oil and oil filter(s)
  4. Check and replace as needed coalescent oil filters and screens/filters for lubrication system
  5. Check and fill all fluids
  6. Inspect belts and alignment, replace as needed
  7. Inspect, clean and replace scavenger lines and screens
  8. Grease bearings
  9. Inspect and tighten/torque compressor and motor foot bolts
  10. Inspection and Visual Assessment of Liquid Transfer Pump Operation
  11. Inspect, evaluate and clean Y Strainer (Replace if Required)
  12. Inspect, Clean and Lubricate Bi-Pass Valves
  13. Inspect 0-Ring Discharge Valve

For a complete listing of service and maintenance items, contact HY-BON

Recommended Frequency of Servicing

Monthly maintenance checks are recommended for VRUs with some service items scheduled on a monthly, quarterly or semiannual basis.

How to Schedule

Use HY-BON’s field service and maintenance team with service agreement that ensures optimal operation.

HY-BON offers full service field startups and repairs on low pressure compression equipment from our service points in Midland, TX; Belpre, OH; Artesia, NM; San Antonio, TX; Weatherford, TX; Oklahoma City, OK; Denver, CO; Dickenson, ND; Bellaire, OH; Carrizo Springs, TX; Wolfforth, TX and Baton Rouge, LA. 

Our experienced, qualified field service personnel are trained on a variety of compressor styles, including rotary vane, rotary screw, liquid ring and reciprocating compressors. We have a track record across the globe of successful startups – with our scope of supply ranging from general startup and commissioning to turnkey system integration.

 We offer third-party maintenance for customer owned equipment on a time and material basis in long-term service contracts.

For the domestic market, our service trucks are each outfitted with one ton cranes and over $10,000 of repair parts and components. Each individual field service technician maintains all required safety certifications, in addition to completing a variety of operator specific training courses for many major and independent producers. In addition, they are supported by our outstanding engineering team – with some of the greatest expertise on low horsepower (<1,200 hp) compression in our industry.

HY-BON corporate office (Permian Basin) phone number: /?W@=bzKjD50]#[BMdHOv2SwQMA