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Bill,<br>
Jay's idea of trying the other AC input is a good one, if you're not
also grid-connected and if you're not using the inverter to send a
start signal, either manually or automatically.<br>
The 8.5 RMY has very good regulation, so if it tests out for voltage
and frequency, that's probably not the issue. And even at high
elevation, the 8.5 can easily handle max AC input that the SW4024
can draw - which Christopher Freitas tells me calculates out to 5647
W.<br>
<br>
If you end up replacing it, either one would work fine. But why not
consider a Magnum MS4024PAE, which has split-phase 120/240. Then the
transformer is taken out of the system completely. Generally panels
set up for straight 120 VAC can handle 120/240 without a hitch. The
8.5 can easily be reconfigured to split-phase as well.<br>
<br>
As a rule of thumb, it takes about 2 kW of sine-wave inverter
capacity per pump HP; 2.5 kW if mod-square, like DR. That's for a
standard 3-wire capacitor-start submersible. <br>
<br>
I'd be interested in knowing where other Wrenches are finding SW
parts and service. We haven't had need for it recently, but still
expect to be able to get service through Inverter Service Company in
Albuquerque, a division of Direct Power & Water. Where else is
service available, assuming someone has kept the original box for
shipping?<br>
<br>
I have a good used takeout unit if that's your customer's
preference, although no box. Contact me off-list if this is of
interest, and you have a box.<br>
<br>
Allan<br>
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<font face="Times New Roman, Times, serif"><b>Allan Sindelar</b></font><br>
<small><a href="mailto:Allan@positiveenergysolar.com"><font
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<span style="font-size: 10pt;">NABCEP Certified Photovoltaic
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NABCEP Certified Technical Sales Professional<br>
New Mexico EE98J Journeyman Electrician<br>
<b>Positive Energy, Inc.</b><br>
3201 Calle Marie<br>
Santa Fe, New Mexico 87507<br>
<b>505 424-1112</b><br>
<a href="http://www.positiveenergysolar.com/" target="_blank"><u>www.positiveenergysolar.com</u></a><o:p></o:p></span></font>
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<br>
On 4/14/2012 7:21 PM, frenergy wrote:
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<div>Wrenches,</div>
<div> </div>
<div> I have a customer that may be having some issues with
the reliability of his 11 year old Trace4024. If my current fix
doesn't solve the problem, I have suggested having the unit
fixed, which I think still happens on these puppies. I have also
suggested replacing it with either an Outback 3524 or a Magnum
MS 4024. He is now running a 1 HP Submersible pump ala
autoformer along with the usual array of house loads.</div>
<div> </div>
<div> The issue is the inverter accepting and then
rejecting the generator power, which I have been watching recent
comments here regarding this issue. I have not thoroughly
checked out pump wiring (was apparently already done by the
well/pump guy, whom is reputable), but have checked the output
of the Kohler 8.5 genny and Hz and voltage appear stable with
and without load. So far I've gone the route of programming in
a few less amps on the "battery charging" and "AC2 IN"
functions. The inverter seems to be happy with new settings,
this new programming was just done a few hours ago.</div>
<div> </div>
<div> So this may be a more generic question for those with
more experience than I: Are both the OB and Magnum inverters
considered equally capable of replacing the Trace? I guess I'm
thinking mainly of that pump, but are there other
considerations?</div>
<div> </div>
<div> Thanks Folks</div>
<div> </div>
<div>Bill</div>
<div>Feather River Solar Electric<br>
4291 Nelson St.<br>
Taylorsville, CA 95983<br>
530-284-7849/6544 fax</div>
<div><font size="1"><em>solar powered since 1982</em></font></div>
<br>
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