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Author: Subject: Motor capacitor start help plz
big_wasa

posted on 5/5/10 at 06:16 PM Reply With Quote
Motor capacitor start help plz

Ive buggered my compressor Having run it for a fare while the pitch of the motor changed. I stoped it and let it cool. I tried to restart it but it just buzzed.

Any way the capacitor has melted into a big blob.

The only info readable on it is 400v 85c.

Can any one give me an idea of capacitance so I can get another ?

Its 240v 3hp belt driven job made by Blue point / Snap on

Any help would be great. Inclueding where I could get one on the high street.

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philw

posted on 5/5/10 at 06:38 PM Reply With Quote
You'll probably need 400v 50micro (can't find the symbol) farrad, the 85c is the temp range ie -25c to +85c.
HTH





Must try harder

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David Jenkins

posted on 5/5/10 at 09:19 PM Reply With Quote
Have a look in yellow pages for a local motor rewinding company - you should be able to pick up a second-hand capacitor for very little money (or a new one cheap-ish).

The place I went to in Colchester put new bushes in my old 1HP motor and sold me a used but sound capacitor for under £10 (although that was quite a while ago).






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Peteff

posted on 5/5/10 at 10:27 PM Reply With Quote
I got one from a local electronics firm for a pressure washer and it cost me about £9 new, it was similar rating to the one you are looking for from JPG electronics in Chesterfield.





yours, Pete

I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.

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NS Dev

posted on 6/5/10 at 08:18 AM Reply With Quote
I got one a couple of months back from RS components





Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion retro car restoration and tuning

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rf900rush

posted on 6/5/10 at 08:34 AM Reply With Quote
Had a quick google

Looks like the Cap value is going to be 270uf -330uF 250VAC rating.
for 2.2kw / 3hp.

Had a look at mine (3hp) but in a steel cover so can't read it.

Larger motors seem to use Aluminium Cap's.

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