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I have a brand new spot spolenoid that has become magnetized and won't release its plunger after it is energized. Is there a way to fix this other than changing solenoid?
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Are you sure the plunger is magnetized and not just sticky? I would first disconnect the wiring from the solenoid to make sure it's not getting residual power from somewhere. If it's still pulled in, I would take a compass, or if no compass, a scrap piece of metal and see it I could get that to be magnetized to the plunger. If the compass reads or the metal sticks, then it is magnetized. To demagnetize it, you would have to pull the plunger and strike it several times on the concrete (not in an area that damage would prevent it from working) or use a degausser to demagnetize it (not too many people have a degausser sitting around.)If it can't be fixed with a hammer, try a bowling pin! They're heavier and more surface area for whacking! -
Compasses are magnetic and will be drawn toward any metal when placed next to it. As stated above it sounds like it may just be sticking or getting power from somewhere.For Sale, Parachute. Only used once, never opened, small stain.Comment
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It would be highly unlikely for a new solenoid to suffer from residual magnetism. What us more likely a culprit is the poor build quality of the unit is showing itself. New QAMF solenoids are notorious for failing. The plunger pulls in a hair too far and can stick on the plate that surrounds it.
Also its good to be sure that it's properly balanced and the bushings and shafts are not worn in the related assembly.Comment
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Also VERY important to make sure ALL 4 screws securing the solenoid in place are tightened with equal tension, that is a big culprit for sticking plungers. I wouldn't say the new QAMF solenoids are notorious for failing, we had a few here where the small "wings" would snap off, but none failed in a way they wouldnt' work, we replaced all the broken ones back in '09 and they are still all going strong....AS REQUESTED....The all new and VERY improved "super cool" Pin_Head with super hip shades.....Comment
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I have the same problem with a couple old BE relays. The field will not colapse. I was told to degauze also. And yes do check for binding.Necessity IS NOT the mother of invention. Laziness IS the mother of invention.Comment
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If your backend runs after all power is remove most likey your contact in the BE relays is worn and sticking. One way I do it is tap the chassi if it goes off then either file your contact smooth or replace.amf 82-70
B2000
quibcaComment
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Going back to 30's - I believe there was a cap added in the Jbox to stop this on the pinfeed or spot solenoidComment
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I have a commercially made degaussing coil, but you can make one yourself pretty cheap.
I've had enough of hope & chains.Comment
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I definitely agree with you mate that has been most times the problem when I have had that issue.Originally posted by Pin_Head View PostscottlachlanComment
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It's funny, I have some solenoids that are probably 150 years old (approx.) still running fine with no signs of any problems.Comment
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The older ones were manufactured better, the plungers were alot stronger, I have noticed teh biggest difference is where the "wings" are they are "cut" differently teh newer ones seem to have a flatter sharper angle where the "wing" meets teh plunger, where as the older ones were more rounded...Originally posted by Tablejam View PostAS REQUESTED....The all new and VERY improved "super cool" Pin_Head with super hip shades.....Comment
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You noticed that? You have too much time on your hands mate!Originally posted by Pin_Head View Post
I've had enough of hope & chains.Comment
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That's cuz my machines run so well!!!Originally posted by wb8yjf View PostYou noticed that? You have too much time on your hands mate!
AS REQUESTED....The all new and VERY improved "super cool" Pin_Head with super hip shades.....Comment
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THAT'S what I'm talking about!Originally posted by Pin_Head View PostThat's cuz my machines run so well!!!
I've had enough of hope & chains.Comment
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