Thanks for the input. These pumps are controlled by 1)pH 2)panel count
3)surface square foot. The controllers are working fine and feeding
when they are suppose to feed, but I've tapped into the output of the
pumps, collected 3-4 gallons and analyzed a sample from it. What is
usually right on the money, say 4%, every once in awhile I get a spike
in my charts and the pumps feed out 1-2%. If I play with them for half
a day, taking apart the check valves, fittings, o-rings, etc. and simply
putting it back together, it goes back to the normal 4% (usually). So,
controllers work, pumps work, maybe it's the material that is used
leading up to the pumps, i.e. PVC, tubing, spring-loaded check valves
(supplied by the pump manufacturer), pressure on the downstroke of the
pump?
--
David M. Nemer
THOR Chemical
San Diego, CA
Fax: (619) 270-7197
[log in to unmask]
-----------
What do you use for your feed back loop? pH, orp, sp gr, panel count?
What do you consider "misproportioned mixing?"
There are several commercially available "controllers" on the market.
Most
are tied to some kind contract involving the use of proprietary
chemistries.
Though the chemistries are for the most part commodities, with some
suppliers,
you get benefit of qualified technical service personnel.
Please feel free to e-mail me if you have any questions or require
further
information.
Murray Anderson
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