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From: (no name) (no email)
Date: Sat Apr 26 2008 - 09:16:51 EDT
George -
It isn't the switch's fault. That's an Ultra Pump switch and I have several.
A fine piece of gear, IMO.
Because you are using a centrifugal pump, some of the water drains back when
it stops and actuates the switch. If you can't baffle the area where the
switch resides to stop short-cycling, raise the switch and live with a bit more
water in the bilge. Or, if this is simply keeping a small space "dry" and not
a primary bilge pump, use a small pump (loke a Rule 360 or 500) with small
hose which will result in less drain-back.
If you want a really dry bilge you'll have to install a
positive-displacement pump.
The best bilge pump switch, I think, is a home-made equal to the Jabsco
Hydro-Air switch, P/N 59400-0012. Use an adjustable diaphragm switch mounted high
and a piece of clear vinyl tube to reach to the bottom of the bilge. The best
of these will have an adjustment that will allow on and off settings in the
1-4" range.
Regards,
John
"Seahorse"
With the very able help from listee Rodger Wrona, had one of these (Model
20090) installed in my least accessible bilge to replace a worn out Rule which
in turn had burned out a Rule pump. Rodger rightly looked askance at this
product from the get-go; here I was thinking I had a premium product.
For one thing, this is only set up to be mounted to a bulkhead or stringer,
none being readily available, Rodger cannibalize a bracket from an Ultra he
had around (wrong voltage for me, so my next purchase).
Well the gist of this rant is the darn thing won't turn all the way off.
Once the bilge is drained it rapidly switches on off three beats at a time. This
will mean bye bye bilge pump before long, not to mention it is right under
the Wife's pillow...
So I beseech Aqualarm for help. The answer I get is that the "sensitivity
cannot be adjusted. Can you mount it higher so that it won't cycle as much?" To
which I reply," how will that change anything...it doesn't know how deep the
water is below it does it? Won't it do the same GD thing only with a higher
amount of bilge water below it?" To which they have no answer. So now I gotta
manually drain this bilge religiously (at least until the rudder packing is
re-done, they are tightened as far as they can go) until I can get somewhere
up the road and replace it Had to head on out of Brunswick, and of course it
is the weekend regardless.
Are Rodger and I missing something or is this (and Aqualarm Inc) the piece
of ----- I think it is? I was going to spring for their water flow sensors,
but can't take that risk after this experience
Please someone tell us we are missing somethng! The vendor already has
assigned us kite flying duties.
George
Sent via BlackBerry by AT&T
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