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The next time I'm up there I'll take another tech with me, plenty of
meters and go through every DC and AC connection (they all looked good
first time around) to try and get to the bottom of the problem prior to
taking a harder look at Magnum. I have to say, though, that I have
heard a couple of comments that tend to suggest that the inverter might
turn out to be one logical place to look. I like these inverters a lot,
and I really hope that we find some other issue. <br>
<br>
To replay the symptoms, there is no audible or visual (as in motor
starter noises or dimming light) indication that the pump is attempting
to do anything other than sit there when inverter voltage is connected
to it. When the genny power is applied, there is a discernable working
under a load sound from the engine, and the pump works. I only had the
homeowner's lousy dime store anaglog meter to work with, but the
voltage from the inverter was right on 120 volts per leg. When I
checked phase to phase I also only got 120 - that's kind of weird, but
it might simply be the meter. All the household loads run flawlessly
(but this is a pretty fundamental cabin, so the TV and DVD player are
the most exotic things plugged in. The run to the pump is adequately
sized - - - - - in other words, it all seems run of the mill, except
that the pump only ran successfully one time and not on any further
attempts. Golly..<br>
<br>
Matt<br>
<br>
boB Gudgel wrote:
<blockquote cite="mid4A74CE39.8040701@midnitesolar.com" type="cite">Larry
Crutcher, Starlight Solar wrote:
<br>
<blockquote type="cite">Hey Matt, <br>
I sure wish their techie's would get to the bottom of it. I am getting
gun-shy about selling Magnum and they are about the best available for
small 12 volt systems. I have spend hours trying to solve the problem.
My customer is still not a happy camper.
<br>
<br>
Larry Crutcher
<br>
Starlight Solar
<br>
(928) 941-1660
<br>
Renewable Energy Products, Service and Installation
<br>
</blockquote>
<br>
Can you get someone to look at the voltage and/or current going into
that pump ?? Scope ? Meter ? Even a
<br>
power factor meter would have both voltage and current measurements.
Some even have a mediocre scope built in.
<br>
A scope AND a meter is best of course.
<br>
<br>
Need stats. AC an DC side. AC voltage at the pump and at the
inverter.
<br>
<br>
Must have more information. Yes, it ~could~ be a Magnum inverter
issue, but need more information other than "it doesn't work"
<br>
<br>
Does the voltage dip when the pump tries to start ? What is the
maximum Ac and DC current ? Most basic info for troubleshooting.
<br>
<br>
The inverter manufacturer can probably help somewhat if they have this
info.
<br>
<br>
Just a suggestion here.
<br>
<br>
boB
<br>
<br>
<br>
<br>
<br>
<blockquote type="cite"><br>
<br>
<br>
On Aug 1, 2009, at 4:28 PM, Matt Tritt wrote:
<br>
<br>
<blockquote type="cite">I took boB's advice and talked to Magnum
about the problem. Their take on it? "Hmmm, beats me!" I might be
paraphrasing, but that's the drift. All in all, I'd say that the
suggestions from the group are at least as good as the one's from the
manufacturer.
<br>
<br>
Matt T
<br>
<br>
Larry Crutcher, Starlight Solar wrote:
<br>
<blockquote type="cite">Don't forget, this is a Magnum inverter
and Magnum has issues. I have two customers with Magnum problems. One
is a washer that will work perfectly on a cheap import inverter; the
other has a Vizio TV that works fine on shore power and generator.
Soooo...maybe there are pumps and other items that are anti-Magnum.
<br>
<br>
<br>
Larry Crutcher
<br>
Starlight Solar
<br>
(928) 941-1660
<br>
Renewable Energy Products, Service and Installation
<br>
<br>
</blockquote>
</blockquote>
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