Varnish in AW Hydraulic Oil

Posted by Jim Harlan on Tue, May. 02, 2017

Saves >$200K/year by reducing downtime, defective units, idle labor and oil costs.

The Application

During the manufacturing process of refrigerators, isocyanate is hydraulically injected into the body of the appliance to improve insulation. After injection, the chemical transforms from liquid to foam.
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Topics: varnish in hydraulic oil, iso cleanliness codes, ISO Fluid Cleanliness Codes, filtration

Turbine Lube Oil Varnish and Removal Strategies, Part 4 of 4

Posted by Jim Harlan on Wed, Nov. 05, 2014

Previously in this series we have discussed lubricant solvency, turbine lube oil varnish formation and lube oil varnish testing.  Today we’re concluding the series (drawn from an article recently published in Combined Cycle Journal by Peter Dufresne Jr. and his team at EPT) by explaining how to remove varnish from your fluid & system components as well as how to prevent varnish from forming in the first place.

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Topics: varnish in hydraulic oil, varnish in turbine oil, contamination, fluid cleanliness, maintenance

Turbine Lube Oil Varnish and Removal Strategies, Part 3 of 4

Posted by Jim Harlan on Mon, Aug. 04, 2014

In part 2 of our varnish series we discussed factors affecting lubricant solvency. This week we’re covering the varnish formation cycle and testing for varnish. Let’s jump right into it!

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Topics: varnish in hydraulic oil, varnish in turbine oil, contamination, fluid cleanliness

Turbine Lube Oil Varnish and Removal Strategies, Part 2 of 4

Posted by Jim Harlan on Tue, Jul. 29, 2014

Last week we covered varnish formation and lubricant solvency as we started a four part series based on an article recently published in Combined Cycle Journal by Peter Dufresne Jr. and his team at EPT. This week we’re sharing information about factors affecting lubricant solvency. Read on and you will be an expert on lube oil varnish by the end of this series.

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Topics: varnish in hydraulic oil, varnish in turbine oil, contamination, fluid cleanliness, maintenance

Turbine Lube Oil Varnish and Removal Strategies, Part 1 of 4

Posted by Jim Harlan on Tue, Jul. 22, 2014
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Topics: varnish in hydraulic oil, varnish in turbine oil, contamination, fluid cleanliness, maintenance

Varnish in Turbine Oil Systems

Posted by Aaron Hoeg on Sun, Nov. 18, 2012

Despite thousands of dollars and hours spent trying to mitigate the effects of varnish in turbine oil, many still suffer from this ongoing yet solvable issue. When combustion and steam turbines fall victim to unit trip or fail-to-start conditions, varnish is the usual suspect.

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Topics: varnish in hydraulic oil, varnish in turbine oil, contamination

What Are the Causes of Varnish in Hydraulic Oil?

Posted by Aaron Hoeg on Wed, Nov. 07, 2012

The Problem of Varnish Contamination 

Varnish contamination is the inevitable byproduct of many degradation processes in hydraulic and lubrication systems. The effects of varnish on industrial and manufacturing systems range from the nuisance of minor downtime and routine maintenance to, worst case scenarios, multi-million dollar catastrophic failures of major capital equipment. 

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Topics: varnish in hydraulic oil, varnish in turbine oil

   

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