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


Brand New Motor Burnout?

Brand New Motor Burnout?

Brand New Motor Burnout?

I have recently bought a brand new extractor fan from Ebay...totally unused, but had been built around 1976, so had been standing in it's box for 38 years! On switching on, all was well until a smell of "hot windings". The wattage of the motor is 65, but I measured it pulling around 9, at this stage. It ran for a few hours, then slowed down, drew 800w and blew the fuse on the supply. This is the second time I've had this happen...that is, a brand new, old stock fan burning out. The wiring is certainly correct (as is supply voltage), so that cannot be a problem. The fan was also very free turning, so it wasn't as if it had seized. My question is why has this happened twice now and how should I commission a motor like this in the future...i.e. one that's new but been standing round for years?

RE: Brand New Motor Burnout?

Frayed winding insulation perhaps; when you say extractor fan what was the application since a 65watt motor sounds like a univeral motor for light application. Was a variable speed switch used on the fan motor?

RE: Brand New Motor Burnout?

Buy a new fan with warranty.

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!


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close