Sewer Pump 1/2HP 120vac / DR2424 [RE-wrenches]

[Backwoods Solar Electric Systems]

Hey Windy, I had a fellow with a 240 AC sewage pump lifting some 35 feet to
an uphill mound. That is a little worse to start given the transformer too.
I wanted to suggest a marine macerator pump or whatever but was unsure of
their lift capability.  So can you tell me the range available for lift, and
where to get one in 24 volt version?

Steve Willey   www.backwoodssolar.com
Backwoods Solar Electric Systems
----- Original Message -----
From: Windy Dankoff <windy at dankoffsolar.com>
To: <RE-wrenches at topica.com>
Sent: Thursday, April 27, 2000 10:00 AM
Subject: Re: Sewer Pump 1/2HP 120vac / DR2424 [RE-wrenches]


> >Has anyone had experience using a DR2424 to run a 1/2 hp 120vac sewer
pump.
> >All my pump experience is either DC pumps or ac pumps using the SW4024 or
> >4048.  I have only installed one DR2424 so far and it is only running a
> >freezer and furnace.  This pump will be pumping up to a mound system.
The
> >inverter will be dedicated to this one purpose so their are no other load
> >issues.
> >
> >John Blittersdorf
> >Central Vermont Solar and Wind
>
>
> John,
>
> The DR2424 should have no problem running 1/2 HP pump. At the instant
> of startup, it will use no about 1/2 to 3/4 of the inverter's surge
> capacity which will cause a quick dip in the voltage, but by our
> gathered experience, it should work fine unless other big loads are
> on, for example a conventional washing machine. The starting surge
> voltage dip may cause a computer in the home to crash, especially if
> the battery voltage is low. These things are not fully predictable,
> but I would bet my dinner that the pump would start and run fine
> however with a bit more power draw than from sine wave power.
>
> An alternative may be to use a 24V marine bilge pump if you need a
> submersible, or one of our Solar Centrifugal pumps if you don't need
> submersion. However, if running is short duration then energy use is
> not a big issue and you may find it most cost-effective to go AC.
> --
>
> ===========================
>
> From the solar powered office of
>      Windy Dankoff, President
>
> ===========================
>
> Dankoff Solar Products, Inc.
>
>     Wholesale distributor of solar-electric equipment
>     Manufacturer & distributor of solar water pumps
>
> 2810 Industrial Rd.
> Santa Fe, NM  87505
>
> (505) 473-3800
> FAX  473-3830
> E-mail:   info at dankoffsolar.com
>
> SEE OUR INFORMATIVE WEB SITE AT:
>
> http://www.dankoffsolar.com
>
> ===========================
>
> To contact Windy Dankoff directly:
> Most days I am at my home office
> e-mail:  windy at dankoffsolar.com
>    tel/fax:  (505) 466-0059
>    ~ amateur radio KE5HV ~
>
> ===========================
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