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[GMCnet] kitchen water pressure mystery... [message #103570] Wed, 20 October 2010 11:46 Go to previous message
greg is currently offline  greg   United States
Messages: 17
Registered: May 2004
Karma:
Junior Member
Well after last week's "gas tank mystery", i figured we were on a roll
with the liquids coursing through the coach,
so i have another query ***

Our kitchen water pressure has been dropping, now to the point un-
usability.. yep, i've been doing dishes in the bathroom sink, 'cause
the water pressure there is just fine. incidentally, its an Eleganza
II, and i don't 'think' there were any modifications done by the
previous owner. I've had the coach for 12 years... and i've installed
new water pumps twice already in that period of time. most recently
last summer, with the
FloJet "Quiet Quad".... model 4406-143 type IV, a mid-priced model...
http://www.campingworld.com/shopping/item/flojet-quiet-quad-ii-water-pump/9372
I was a sucker for the "Quiet" feature, since the thing lives under
the bed!
BTW: Both times i replaced the pumps, the old pumps were never totally
dead. the most recent swap was because the pump sounded super-weak
when priming.... it sounded like it was on its way out,.. and it was
10 years old, so...
After we swapped it, the new pump was quieter, but we didn't get the
gain in water pressure we were hoping for. And now, slowly
deteriorating over the course of a year and a half, the water pressure
is un-usable in the kitchen.

Well, we've already checked for kinks in the line leading to the
kitchen. Couldn't get completely under the headliner,
but we WERE able to pull the lines back and forth a bit, to ensure
that they weren't restricted. We ran the sink while pushing and
pulling on the lines, and we could see a LITTLE bit of better
pressure... modulating in time to the pushing/pulling, but certainly
not the "ah ha!" we were hoping for.... not a huge difference.
Next, we hooked up the city water supply (which i've NEVER used, in
all my years of owning this thing!),
and voila, the kitchen faucet had what i'd consider near-normal
pressure. So....

i'm under the impression that my water system is tight, because the
pump doesn't prime itself very much.
in fact, it seems like there's been an actual drop-off in the amount
of priming lately;
which might actually be a cause for suspicion. Maybe this relatively
new pump is getting weaker?

So before i shell out for a new more powerful water pump, and/or
before we try adding an accumulator (having read previous threads in
list archives).... maybe i'm stabbing in the dark here, but i'm
wondering if there might be an old accumulator hidden somewhere in the
system, and maybe its starting to go faulty?
Yeah, the pump doesnt turn on right away when i turn on a faucet.
there's usually at least a few seconds delay,
but i'm guessing that's probably normal for an accumulator-free system.
But i've got to ask, in order to rule things out: Were accumulators
EVER stock items in Eleganza II's or other models? And where would
somebody 'hide' an accumulator, if its not immediately visible in the
system?

And if the solution is as simple as a stronger pump and/or
accumulator, then so be it.
I wouldn't mind shelling out for the ShurFlo 5.7 Extreme, which i've
read about on the list archives,
but on the other hand, i don't want something so strong that it
exposes any weakness in my plumbing system,
and suddenly i've got leaks where i never had em before... Is this a
serious concern?
And lastly, is the ShurFlo 5.7 Extreme louder than your average pump?

OK, so thanks for reading my epic mystery series... and thanks in
advance for any advice... as always!
I wish i had greater ability to ANSWER other people's questions on
this list, as opposed to always ASKING.
*** And i think i'll start a new thread to express my appreciation for
the help i've received!
cheers,
Greg
...with the dual SolarSonic RVs / Los Angeles



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