Fw: Need a Deep Well Pump Solution [RE-wrenches]

[Allan Sindelar]

----- Original Message -----
From: "Brad Bassett" <bsbassett at earthlink.net> and "Jay Peltz, Peltz Power"
<jay at asis.com>

> The SQFlex pump only needs 2 conductors and a ground down the well. The
> low water sensor is built into the lead on the pump and is wired to the
> pump where it does it's thing.
Oh, OK, thanks. I wasn't clear-- for this SunRise installation we used two
#10 conductors in flat-jacketed submersible cable to minimize weight. We
will still need the ground.
>
> I will get you watthours per gallon for generator and solar direct next
week.
Thanks again.
>
> It sounds like some of the solutions to run off a battery might cost
> more than a solar direct system with it's own array, especially when you
> consider the labor and troubleshooting involved.
You may be right. As it is now, the SQ Flex would run off of PS inverter
(preferably) or generator AC, so there's not much reworking to this option.
The ETApump would run off of the main array, using relays to control voltage
and destination; fair amount of finagling labor there. The Solamotor would
be a conventional 24V DC load on the main system; probably a pull of heavier
conductors through existing conduit.
Jay, we too prefer to run off of the main battery system whenever possible.
>
> In general I do not recommend using flexible hose for well pumps. They
> are generally made with vinyl or rubber, both of which can leach various
> hydrocarbons into the water, and so are rarely rated for potable water
> (Even if vinyl hose is rated, do you trust the raters on this issue,
> also I consider it an environmentally undesireable material). Also, it's
> sometimes hard to find hose rated for the pressures you're talking about
> at that depth.
>
The SunRise hand installation method uses 200psi SDR9 3/4" polyethylene pipe
with bronze compression adapter fittings. This has never been a problem in
the past. 200psi = 462' of head. While it has been used over that, weight
for a hand pull gets prohibitive beyond about 300'. Standard installation
material, readily available. I have recommended, however, that the client
not use hand method with the ETApump or the SQ-flex unless he develops a
hand crank drum assembly to raise and lower it. Otherwise, use conventional
1" Sch. 80 PVC well drop pipe and a conventional pump installer, as hand
assembly is way too heavy. I don't know what is used with the Solamotor jack
pump down-hole assembly.

> Brad

> Allan Sindelar wrote:
>
> >
> > Option 1: Grundfos SQ-Flex, set at 350-390',
>
> 4. Requires 2 conductors plus dry run
> > sense plus ground, so means replacing existing pump cable and in-ground
> > conductors. 5. Least efficient in watthours/gallon pumped of the three,
> > although I lack numbers (if it was array-direct, I am quoted 267 gpd
> > using
> > 172W of PV).
> >

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