philw
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| posted on 1/3/09 at 03:52 PM |
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OT 240v electric motors
My air compessor's motor has just stopped and is making a humming noise, as has my tumble dryer, now not knowing a thing about electric motors
the question is, does the capacitor provide an initial start current? if i turn the tumble dryer drum by hand it will start.
Or are both motors fOOOked
[Edited on [1235922830R0=033131p: by philw]
Must try harder
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daniel mason
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| posted on 1/3/09 at 03:55 PM |
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what sort of motors are they
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philw
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| posted on 1/3/09 at 03:57 PM |
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quote:
Originally posted by daniel mason
what sort of motors are they
Well, i dont know electric
Must try harder
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mr henderson
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| posted on 1/3/09 at 03:58 PM |
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They will both be induction motors, probably capacitor start.
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dinosaurjuice
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| posted on 1/3/09 at 03:59 PM |
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sometimes if the bearings wear the rotor is pulled against the stator when intially turned on, but if spun will run OK but noisily.. happened to a
cheap fretsaw i had. took about an hour to strip, change bearings and rebuild.
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philw
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| posted on 1/3/09 at 04:01 PM |
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quote:
Originally posted by mr henderson
They will both be induction motors, probably capacitor start.
How do i test them?
Must try harder
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mr henderson
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| posted on 1/3/09 at 04:02 PM |
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quote:
Originally posted by mr henderson
They will both be induction motors, probably capacitor start.
Thinking some more about it, the TD motor could be a permanant magnet type. Post a pic and we will tell you.
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philw
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| posted on 1/3/09 at 04:03 PM |
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quote:
Originally posted by mr henderson
quote:
Originally posted by mr henderson
They will both be induction motors, probably capacitor start.
Thinking some more about it, the TD motor could be a permanant magnet type. Post a pic and we will tell you.
Hang on then
Must try harder
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philw
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| posted on 1/3/09 at 04:12 PM |
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Here you go
Must try harder
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mr henderson
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| posted on 1/3/09 at 04:55 PM |
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That looks like an induction motor to me, although more complex that usual as, presumably, it reverses?
Quite a large capacitor, looks like the sort of thing that would be used as a start capacitor.
I'd unplug the motor and get a meter on those windings to start with
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philw
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| posted on 1/3/09 at 05:15 PM |
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quote:
Originally posted by mr henderson
That looks like an induction motor to me, although more complex that usual as, presumably, it reverses?
Quite a large capacitor, looks like the sort of thing that would be used as a start capacitor.
I'd unplug the motor and get a meter on those windings to start with
Right, according to my google search on how to test motor windings they seem ok, but my multi meter is unable to test the capacitor, if i take the
belt off of the motor it seems to start ok.
Must try harder
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mr henderson
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| posted on 1/3/09 at 05:37 PM |
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Thinking back to my days with Hotpoint, the next step would be to test the components by sustitution, and swapping the capacitor, if it looks from the
wiring to be the motor capacitor, would be the next thing to try.
That's where service engineers have it over DIY mechanics, they don't have to bother with exhaustive test procedures and wiring diagram
studies, just swap a bit and see if it runs
John
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splitrivet
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| posted on 2/3/09 at 10:19 AM |
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Bit late for this reply but it sounds like the start capacitor.
Cheers,
Bob
I used to be a Werewolf but I'm alright nowwoooooooooooooo
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philw
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| posted on 6/3/09 at 12:24 PM |
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Cheers guys, both fixed for the grand sum of £23.24p
Must try harder
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