the GS Series Disk Skimmer saves the day; The Virginia Panel Story
Campbell at Virginia Panel has been trying to keep his coolant
perfectly free of tramp oils for the past ten years. His only
criteria? Whatever he chose had to be effective, and affordable.
new invention that uses micro-coalescing technology. Cary
was using sulfur based coolant in all the machines in his
plant. Particularly in his Mitsui Seiki VR5A. In 1993, he
had to dispose of 19 barrels. At a cost of $65 each, this
came to $1,235 for 93. This is about $1.20 per gallon. These
barrels contained coolant and oil. Therefore an additional
cost was incurred to replace the lost coolant.
far for '94, Cary has disposed of 13 barrels. One reason for
this decrease is that Cary is switching his machines over
to Blaser coolants. His machine was one of the first to switch.
The new coolant helped him cut better.
more advantageous, it also rejected the oils much better than
the old. So the quantity of oils in the machine were now more
also knew that the new coolants were more nutritious for anaerobic
bacteria, so that something about the tramp oils had to be
done. If he didn't remove the oils, then his more expensive
coolant would go bad just as the other coolant had.
first, Cary used three different types of belt
skimmers, and they didn't do the job. Then he got a conventional
skimmer. This did the job, but this unit also pulled out
much of the coolant, so that the waste drum was filling up
with a mix of coolant and oils. The unit had to be on a timer,
and the container that Cary was using to collect the oils
had to be watched every day to make sure that it would not
addition, Cary had to take the full container to the barrel
and empty it every day.
required only a few minutes a day, but over the course of
a year, a few minutes a day adds up to a full day of lost
this point, Cary began to use a new product that not only
skimmed his tramp oils out of the tank, but also cleaned and
returned the coolant to his sump.
was the new type of disk
skimmer introduced by Zebra Skimmers in Cleveland, Ohio.
The skimmer uses patent pending micro-coalescer technology
to separate the coolant from the oils, to clean the coolant,
and to remove the oils from the tank.
addition, the units could be easily customized to fit in a
special area, and it had unbreakable disks. As a bonus, Cary
was able to use components of his old disk skimmer on the
new unit, saving even more money.
the biggest benefit of all was that there was no coolant removed
by the filtration system because of the micro-coalescer. By
leaving the skimmer on almost continuously, and using a small
fan to move the oil towards the skimmer, he was able to keep
his coolant pristine.
August of 94, he has removed about 20 gallons of oil from
the machine. At this rate, it will take about a year to fill
a waste barrel.
was once costing him over $1,000 a year is now less than a
hundred! By switching his unit to a Zebra GS unit, Cary has
saved himself a lot of time, and money.
better, the sump stays cleaner because he can have the skimmer
on all the time. Waste disposal cost is minimized because
the waste barrel contains only waste oils; so the cost of
hauling it is also much less.
Cary doesn't have to empty the can every day, only once a
week, so that much time is saved as well. It was like gaining
an extra day of production! And since the coolant is cleaned
and returned to the sump, it lasts longer, resulting in fewer
Useful Links and Information about Coolant Maintenance