Cooker hood fan stopped working?

[HappyHippyDad]

Hello all.

My cooker hood fan has stopped working and its not something I attempt to fix with customers but I thought Id have a look at my own.

The lights work. It has 240v into the terminal block. 240v from switches back to the terminal block. Then the 3 lives (3 varying speeds) disappear into the motor, 2 others come back from the motor and go into a capacitor. So Im guessing the problem is with the motor or capacitor. Which us most likely? How do I test these?

Cheers.

 

[buzzlightyear]

who's make of extractor is it .How to measure capacitance with a digital multimeter - http://en-us.fluke.com/training/training-library/test-tools/digital-multimeters/how-to-measure-capacitance-with-a-digital-multimeter.html

 

[charlie76]

Hello all.

My cooker hood fan has stopped working and its not something I attempt to fix with customers but I thought Id have a look at my own.

The lights work. It has 240v into the terminal block. 240v from switches back to the terminal block. Then the 3 lives (3 varying speeds) disappear into the motor, 2 others come back from the motor and go into a capacitor. So Im guessing the problem is with the motor or capacitor. Which us most likely? How do I test these?

Cheers.

View attachment 40079

Ha ha - Probably not the best answer but it worked. I got called out to a customer with a fan not working but lamps etc were. I used a small screwdriver to give the fins of the fan a nudge and tried again and it spun and they never had a problem again.

If its a crap motor, its likely that grease will get in and cause issues, sticking etc. It may only come to light if the fan has not been run for a period of time and the gloop has set hard causing the fan to stick.

Anyway, as I said, not a technical answer but sometimes, the hammer is the best tool in your toolbox

 

[Wilko]

I'm with Charlie on this, I've fixed a couple that've been gummed up.

 

[charlie76]

I'm with Charlie on this, I've fixed a couple that've been gummed up.

Did you fix them or prod them?

 

[Wilko]

They were working when I left, that's all I'll say .
Had one where one of the internal conductors had popped out of the terminal, had to use a screwdriver and all.

 

[benji]

open the selector switch and look at pcb for burnt tracks

 

[Squid]

Quote for a full house rewire........ and tut a lot.

 

[Spoon]

Quote for a full house rewire........ and tut a lot.

Does everyone work for British Gas.....

 

[ruston]

Grease is the the first suspect, same with kitchen wall extractors .

 

[telectrix]

Grease is the the first suspect, same with kitchen wall extractors .

how do you extract a wall?

 

[ruston]

how do you extract a wall?

No bother when I worked with these.

 

[Gary K]

how do you extract a wall?

Easy as A,B,SEA

 

[ipf]

View attachment 40089

No bother when I worked with these.

And I would say a bit of grease never did one of those any harm.....

 

[ruston]

@ipf ,No and nicer to work with than blackjack.
If they lacked grease the squealed like a herd of pigs .