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Vacuum Dehydrator Called On to Save Fishing Season

Fri, Apr. 15, 2016

One of our V1S vacuum dehydrators was recently put to the test in a marine application with hydraulic oil contaminated by more than 2500 ppm of water. Did it sink or swim? Find out below.
vacuum dehydrator (VUD)

The Problem: Failed Hydraulics Seal and Lost Productivity

When a seal fails on a net hauler hydraulics system out at sea, the costs and lost profits stack up quickly. In this instance, salt water began entering the hydraulic fluid on a 245 ft (75 m) purse seine through a seal leak, rendering the net hauler out of commission.

Faced with frequent fluid exchanges at a cost of $9,300 plus disposal, or worse, substantially larger lost profits from downtime for replacement of the seal, the vessel owner was in desperate need for a solution to allow him to continue operating without fear of malfunctioning equipment.

Through fluid analysis it was found that the 265 gal. (1000L) reservoir of ISO VGA 32 hydraulic fluid contained 28564 ppm of water. If the water content could not be reduced below 200 ppm the oil would inevitably have to be replaced.

The Solution: Portable Vacuum Dehydrator

A goal of reducing the water content to < 150 ppm was set and a V1S portable vacuum dehydrator was installed on the reservoir. The V1S ran for 10 days with samples for analysis being drawn on days 1, 3, 8 and 10.


Click Here to See the Results!


Vacuum Dehydrators - What are they, when should they be used and how do they work?


Written by Jim Harlan


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