Engraver motor help

[Jeff15]

Found my gravograph TX2 engraver to be tripping electric.
The motor is a 230v 70w runs at approx 16000rpm.
I opened the wiring switch box on the machine to find what i think my be a capacitor, maybe a start or start run type?? however the only markings on the item is 1022T 52/64...it has three wires one to earth and one to each motor coil wires.
Rang the manufacturer alas they don't stock spares for the old machines.

The motor still runs but every few minutes a crack sounding spark in the capacitor trips the electric.
Can anyone suggest a replacement for this item,or maybe a fix... a picture is attached.

Regards
Jeff

 

[ScottyUK]

Looks like an old paper-foil capacitor which has partly ejected the bitumen seal, some of which is on the white connector block.

Does the engraver work with the capacitor disconnected? If it doesn't work then it is probably part of the phase shifting for the auxiliary winding. If it does work then it is probably noise suppression. My guess is that 52/64 is a date code for week 52 of 1964.

 

[waross]

At 16000 RPM running from the grid it won't be an induction motor. Most likely a universal motor with capacitors for noise suppression.


Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[ScottyUK]

LOL, good catch Bill.

 

[Jeff15]

Thanks for the response guys, I did take disconnect the item, the motor does run fine without it (happy days), therefore as you suggest probably just noise suppression.

Saves me a few pounds, when i spoke the the "field engineer" from gravograph he said the motor is very old and he wasn't sure what the item was, they no longer supply parts?? however he did offer to supply a new motor and switch for £402.00 + £10 shipping lol.

Thanks again guys, great forum.

Jeff