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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.

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