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Varnish Contamination In Large Hydraulic Shear

Problem: Operators of a large Hydraulic Shear noticed elevated temperatures and a discoloration of the oil in their 2,500 gallon hydraulic oil system. This prompted them to conduct oil analysis, and the lab results revealed an elevated varnish potential number of MPC 49. If left untreated, the operators were worried that varnish would eventually cause premature failure of the large Hydraulic Shear, requiring costly repairs and down-time.


Solution: To effectively mitigate the varnish contamination in the hydraulic oil, the plant decided to implement a 10 GPM Varnish Removal System utilizing Granular Adsorbent Media and High Efficiency Beta>1000 Filter Elements to re-circulate the reservoir in a kidney-loop configuration, continuously removing impurities as the hydraulics of the Shear were actuated.


Results: The starting varnish content in the oil was MPC 49. After approximately 6 weeks of run-time, the varnish potential dropped significantly to MPC 9. By implementing a Varnish Removal System from Oil Filtration Systems®, and maintaining the oil of a large Hydraulic Shear at or below the recommended varnish potential of MPC 10, operators at this large Steel Mill did everything possible to ensure optimal reliability and operation/performance of the Hydraulic Shear, while minimizing down-time and costly repairs.


 
 
 

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Oil Filtration Systems® manufactures Oil Purification Equipment designed to remove contamination (water, particulate, varnish, and/or entrained gases) from a wide variety of fluids, including Turbine Oil, Hydraulic Oil, Gear Oil, and Fuel Oil (#2 Diesel Fuel).  When used in conjunction with our high-efficiency filter elements rated Beta(c)>1000 in a variety of micron sizes, our systems will enable you to achieve optimal fluid cleanliness to meet or exceed the most stringent OEM cleanliness specifications.

We also operate the largest, newest, and best maintained Rental Fleet of highly advanced oil and fuel purification equipment in the industry. In addition, our Field Services Division has highly qualified and experienced technicians performing a variety of filtration and flushing services worldwide.  We mobilize quickly for emergency outages, scheduled outages, routine maintenance, and pre-commissioning of new equipment.

 

WE SET THE STANDARD FOR OIL PURIFICATION™

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