Gallery, Projects and General > How do I??

Chester 626 Mill

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kayzed1:
Running slowly:: Hi all i am after some help from you electricary guru's ...I noticed today that my Mill ( chester 626 single phase 240V )  UK.. seems to Eeerr! soft start, does that make sense? it used to go with a clang when it started but now seems to just run ( slowly ) also i was drilling a hole 13mm i had run an 8mm pilot drill through first, the spindle stopped twice :bugeye: i was NOT over working and hanging off the arm honest..
   I had to replace the start Cap last year when it would not start, i did replace both at the time.
Any body throw any light onto it please...
Lyn.

PS: voltage is 241 as of 7pm last evening.     

BillTodd:
there's a centrifugal switch that opens when the motor is up to speed and disconnects the start winding.

could be that the contacts have burned and are near open circuit?

philf:

--- Quote from: BillTodd on November 24, 2015, 02:54:29 AM ---there's a centrifugal switch that opens when the motor is up to speed and disconnects the start winding.

could be that the contacts have burned and are near open circuit?

--- End quote ---

Or possibly that the centrifugal switch mechanics are sticking. Usually a blast of WD40 on the mechanism will free it up. (Easier said than done if it's a totally enclosed motor.)

Phil.

Bluechip:
Usually if an unloaded  1 Ph. motor starts it will come up to synchronous speed. Hence the jerking of belts to get 'em going.

Your symptoms may be a open circuit run winding ? I had one with just those symptoms on a ML7/T. Turned out to be a faulty connection to the 'run' winding on that miserable skinny Paxolin connection plate Crompton Parkinson were fond of.

You also refer to  'both' ?     
Is it a cap. start, cap. run motor ?
If so the 'run' cap. may be o/cct.

Really need to take the motor off and go over it with a meter. Not much to be done to prove the caps. without the proper gear, they may 'kick' the needle on an ohms range as they charge if you use an analogue meter, digitals don't usually notice. Should just read open circuit on a meter. Anything less and they are probably buggered.

Dave

kayzed1:
Thanks Gents for your info, i will move the world this morning to TRY and get into the corner of the shed and behind the mill to remove the motor. Me and electrics :zap: May i come back for more info when the motor is on the bench.??   Lyn.

PS: is the run Cap the high or low number? :doh:

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