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ELECTRIC MOTOR **HELP**

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Forum topic by GR8HUNTER posted 07-28-2017 09:35 PM 730 views 0 times favorited 46 replies Add to Favorites Watch
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GR8HUNTER

2963 posts in 550 days


07-28-2017 09:35 PM

Topic tags/keywords: question

hello all I am in the middle of building my air cleaner for shop here is PROBLEM
when I click on switch electric motor runs 15 seconds then stops works again 5 minutes later but only for 15 seconds then shuts off again now I took it off it runs fine on bench forever or if you take lean off belt soo its super loose will still work problem comes when I put a load on it :<((

thanks for all the help :<))

-- Tony Reinholds,Pa. REMEMBER TO ALWAYS HAVE FUN


46 replies so far

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woodshaver Tony C

5544 posts in 3190 days


#1 posted 07-28-2017 09:45 PM

I’m not sure if this is any help but are the brushes ok?

-- St Augustine FL, Experience is the sum of our mistakes!

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GR8HUNTER

2963 posts in 550 days


#2 posted 07-28-2017 09:47 PM

I’m not even sure how to check that out Tony ?? :<((

-- Tony Reinholds,Pa. REMEMBER TO ALWAYS HAVE FUN

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Loren

9628 posts in 3485 days


#3 posted 07-28-2017 09:51 PM

“The capacitor is the component through which power is drawn, accordingly, if the fans fail to rotate at all or only works intermittently, the capacitor may be to blame. If the motor stops working, the capacitor may be the cause.”

source: http://www.doityourself.com/stry/3-ways-to-tell-if-you-need-a-new-motor-capacitor

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woodshaver Tony C

5544 posts in 3190 days


#4 posted 07-28-2017 09:56 PM

I think Loren has the right answer!

-- St Augustine FL, Experience is the sum of our mistakes!

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GR8HUNTER

2963 posts in 550 days


#5 posted 07-28-2017 11:11 PM

I’m not sure this motor has a capacitor Loren if it does would have a bump on it CORRECT ????

-- Tony Reinholds,Pa. REMEMBER TO ALWAYS HAVE FUN

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woodshaver Tony C

5544 posts in 3190 days


#6 posted 07-28-2017 11:28 PM

Found some info that might help. Maybe Laren can step in for more help here….

Question: Received motor today and wired to test out. Thermal protection keeps shutting motor down, did I get a bad one?
Answer: Check wiring diagram carefully as well as the color of the wires and voltage selection. I was not clearly outlined for the motor that I received. Once I figured out diagram all went well and has worked almost non stop flawlessly.
By Bub Bear on July 20, 2017
make sure the load on the motor is not too high. How? I don’t really know but they’re really sensitive!
By RonG on July 21, 2017
I never had that problem before with this motor. do a amp test on the motor and see if it pulling to many amps. if so then motor may be bad, check the voltage and make sure it 115
By Amazon Customer on July 20, 2017

-- St Augustine FL, Experience is the sum of our mistakes!

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Loren

9628 posts in 3485 days


#7 posted 07-28-2017 11:30 PM

Generally yes, but some motors don’t have
them. I don’t know how those work. All
the motors I’ve fussed with have had capacitors.

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woodshaver Tony C

5544 posts in 3190 days


#8 posted 07-28-2017 11:42 PM

Found your motor and it says it has overload protection. Check your wiring. It may be wired wrong and the overload protection is shutting the motor down.

-- St Augustine FL, Experience is the sum of our mistakes!

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lew

11846 posts in 3593 days


#9 posted 07-29-2017 12:00 AM

Could it be the dust impeller blade is tight? Just working backwards.

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

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GR8HUNTER

2963 posts in 550 days


#10 posted 07-29-2017 12:01 AM

that’s sounds like the closest to my problem I think motor housing is getting too hot then themal protection takes over

-- Tony Reinholds,Pa. REMEMBER TO ALWAYS HAVE FUN

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woodshaver Tony C

5544 posts in 3190 days


#11 posted 07-29-2017 12:07 AM

And that would explain why it is turning back on after it cools off.

-- St Augustine FL, Experience is the sum of our mistakes!

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Holbs

1723 posts in 1866 days


#12 posted 07-29-2017 12:07 AM

my 1/2 HP didn’t have a capacitor (which shocked me… haha!). granted, this was a 1/2 HP motor for a evap cooler. Thanks to someone’s post, I cleaned up the centrifugal switch and it functioned 100%. For my problem, it would not even rotate. Unsure what running for 15 seconds would mean.
but yea…if the motor housing itself was getting hot, there is issue inside. Tear it down and take a gander at the windings to see if any smell of burnt or visual of anything burnt. Though I love DIY stuff, re-doing the windings if they were faulty would be too far down the rabbit hole for me to follow.

-- The Carpenter Bee is derived from the Ancient Greek word wood-cutter

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MrUnix

6002 posts in 2036 days


#13 posted 07-29-2017 12:14 AM

Sounds like the thermal switch (Klixon) kicking in and out to me. That motor has sleeve bearings – have you oiled them?

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

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GR8HUNTER

2963 posts in 550 days


#14 posted 07-29-2017 12:27 AM

no I have not oiled them Brad…. I WILL try that

there is only 2 wires coming out of motor so not really sure I have the wiring wrong Tony BUT it does say MOTOR MUST BE GROUNDED I thought it was when I put it onto the squirrel cage ???

-- Tony Reinholds,Pa. REMEMBER TO ALWAYS HAVE FUN

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Andybb

550 posts in 441 days


#15 posted 07-29-2017 12:47 AM

I too would look at whatever the belt is attached to. 15 seconds is mighty quick for a thermal issue. It would have to get mighty hot mighty quick to trip that in 15 seconds and take 5 mins to reset, That thermal switch doesn’t have a time on it. It’s taking that long to cool down especially if the motor turns freely by hand. So, is whatever it’s turning putting a load on it? Does the motor turn freely when the belt is on? It’s only turning a fan or impeller which should both spin freely and neither should put.a real “load” on a 1/2hp motor. Otherwise it sounds like a bad motor (or thermal switch) but unless you can find a separate thermal switch that makes it a bad motor. Is it new? Brad is certainly more experienced than I but if the bearings needed oil that badly it would be damn near seized up and wouldn’t run on the bench with no issues IMHO.

-- Andybb - GO HAWKS!

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