×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Engraver motor help

Engraver motor help

Engraver motor help

(OP)
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

RE: Engraver motor help

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.

RE: Engraver motor help

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

RE: Engraver motor help

LOL, good catch Bill. smile

RE: Engraver motor help

(OP)
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

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources