T-240 circuit problem [RE-wrenches]

[Matt Tritt]

Bob-O et al,

It's good to know that the SQ will work with inverters. Maybe I need to
change my AC pump supplier. I don't see the reason to run a pressurizing sub
pump - sans water tank though. If you live outside the distributed water
supply, you'd have to be slightly out of yer gourd NOT to have a nice, big
holding tank, a 4" supply to (at least) one hydrant, and a booster pump for
other purposes, unless there's a good fall from the tank. This is like
running an off-grid house with four T-105's and hoping that the power input
never goes off!

Matt T

 Message ----- 
From: "Bob-O Schultze, Electron Connection" <econnect at snowcrest.net>
To: <RE-wrenches at topica.com>
Sent: Saturday, August 30, 2003 3:07 PM
Subject: Re: T-240 circuit problem [RE-wrenches]


> Matt, Dave, etal,
> I've got a few SQE pumps running on sine wave inverters with no
> worries both in 120V (now discontinued, I think) and 240V through a
> T240.  I did, however, have one bummer SQE which worked out of the
> box but poorly. More poorly on the inverter than the genny. Dontcha
> hate that? Grundfos gave my supplier credit for it eventually, but it
> was a hassle with me having to buy a second pump to get the client
> back in water. I was very unimpressed by the glacial speed at which
> Grundfos dealt with the problem.
> Best, Bob-O
>
> >Dave,
> >
> >As I remember, the SQ is a variable speed, constant pressure pump, which
> >includes an inverter within the pump itself. They might be trying to run
an
> >inverter with another inverter - a function which is highly improbable,
if
> >not impossible. (This according to Hays Pump who also make a similar type
of
> >pump I was interested in powering with a 4048 a few years ago)
> >
> >This pump will run great on generator power or grid, but not on inverter
> >power.
> >
> >Matt T
> >
> >
> >----- Original Message -----
> >From: "David Palumbo, Independent Power & Light" <ipl at sover.net>
> >To: "Wrenches" <RE-wrenches at topica.com>
> >Sent: Saturday, August 30, 2003 8:54 AM
> >Subject: T-240 circuit problem [RE-wrenches]
> >
> >
> >>  A customer reports the following:
> >>
> >>  240v water pump operating off of OutBack FX2024 inverter by way of a
Trace
> >>  T-240 (we specked Trace because T-240 comes with box and customer did
not
> >>  have OutBack AC box on his system) making loud "grinding noises" while
> >>  attempting to power the water pump. The pump is a Grundfos SQ sub pump
> >>  pumping into a standard pressure tank setup. FX inverter appears to be
> >>  operating fine as he reports no problems with other loads.
> >>
> >>  TriMetric system monitor showed current going from normal 45 amps dc
at
> >24v
> >>  up to 90 amps during this episode. He reported that these numbers were
> >>  jumping back and forth violently and the TriMetric meter actually
re-set
> >>  itself to 100% at this time.
> >>
> >>  I told him to check all his connections etc. He said he had already
done
> >>  that. I had him then disconnect the pump feed wire from the T-240 and
> >>  connect the pump directly to his 240v generator output. He called back
> >later
> >>  to report that he tried this and the water pump worked fine directly
from
> >>  the generator.
> >>
> >>  He has had the T-240 working in his system since early spring with
good
> >>  performance until now.
> >>  The circuit is as follows: FX2024 > 120vac load ctr > 15A breaker >
> >pressure
> >>  switch > T-240 T-former > 240v Grundfos SQ sub pump.
> >>
> >>  Do Transformers go bad? Or what else might cause this problem?
> >>
> >>  Thanks,
> >  > Dave
>
> - - - -
> To send a message: RE-wrenches at topica.com
>
> Archive of previous messages: http://www.topica.com/lists/RE-wrenches/
>
> List rules & etiquette: http://www.mrsharkey.com/wrenches/etiquete.htm
>
> Check out participant bios: www.mrsharkey.com/wrenches/index.html
>
> Hosted by Home Power magazine
>
> Moderator: michael.welch at homepower.com
>
>
>

- - - -
To send a message: RE-wrenches at topica.com

Archive of previous messages: http://www.topica.com/lists/RE-wrenches/

List rules & etiquette: http://www.mrsharkey.com/wrenches/etiquete.htm

Check out participant bios: www.mrsharkey.com/wrenches/index.html

Hosted by Home Power magazine

Moderator: michael.welch at homepower.com
--^----------------------------------------------------------------
This email was sent to: michael_welch at sbcglobal.net

EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Qcs.bz9JC9.bWljaGFl
Or send an email to: RE-wrenches-unsubscribe at topica.com

TOPICA - Start your own email discussion group. FREE!
http://www.topica.com/partner/tag02/create/index2.html
--^----------------------------------------------------------------