<html><body><span style="font-family:Verdana; color:#000000; font-size:10pt;"><div>Turns out to be a grounding issue.. the solenoid uses a common ground wire for suck in and run. It also shares a circuit with the starter solenoid. so when it sees no/ bad ground, the next best path is thru the starter solenoid.. which can energize the start circuit (sorta). They told us similar stories in E3. i.e. houses can do the same kinda thing when the ground / neutral gets disturbed.. been known to cause fires in an adjacent house with no power (No meter). Thanks Guys. db<br></div><div><br></div><div><br>Dan Brown<br>Foxfire Energy Corp.<br>Renewable Energy Systems<br>(802)-483-2564<br><a href="http://www.Foxfire-Energy.com">www.Foxfire-Energy.com</a><br>NABCEP #092907-44</div><div><br><br></div>
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-------- Original Message --------<br>
Subject: [RE-wrenches] Murphy Gen Control Oopsies<br>
From: <<a href="mailto:dan@foxfire-energy.com">dan@foxfire-energy.com</a>><br>
Date: Sun, August 12, 2012 7:19 pm<br>
To: "RE-wrenches" <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>><br>
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<span style="font-family:Verdana; color:#000000; font-size:10pt;"><div><br></div><div><br></div><div>Anyone else having issues with Murphy Controls and Off Grid Systems? I have two installs w/ GPP Isuzu diesels on Mecca Alti Gen sets built by Mack Boring and Parts as primary power units. one is a 12K unit, the other a 20. both use Murphy controls, and both are toasting their fuel solenoid at random. the smaller one (Customer purchased/ we installed to back up an OB 7224 system). it's been in for a few years, but spits it's fuel solenoid twice a year like clock work (the first two times it took out the starter as well.. <span>we think<span id="GD__CURSOR"></span></span> something caused the starter to suck in while running ). the second one (the 20K), has only been in since last fall and just spit the same solenoid for the first time. this one is backing up an OB14,400 system. Both use make or break (dry) contact for gen run, and both use OB AGS from the Master. Since Sandy left Mack Boring I can't seem to get a straight answer from anyone.. (other than they're very sorry, the gensets are out of warranty). I can almost see messing up one somehow.. but both? apparently the solenoids use two coils -- one to suck in, the other to hold. Sandy was thinking something was causing the suck in coil to overwork which made the thing over heat and fail. I have dozens of other off grid systems with generator back up of one flavor or other and have never seen this kind of problem with any of them. I'm stumped. Suggestions? Thanks db</div><div><br>Dan Brown<br>Foxfire Energy Corp.<br>Renewable Energy Systems<br>(802)-483-2564<br><a target="_blank" href="http://www.Foxfire-Energy.com">www.Foxfire-Energy.com</a><br>NABCEP #092907-44</div><div><br></div> <blockquote id="replyBlockquote" webmail="1" style="border-left: 2px solid blue; margin-left: 8px; padding-left: 8px; font-size:10pt; color:black; font-family:verdana;"> </blockquote></span> <hr>_______________________________________________<br>
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