How do I test this extractor please?

[matt84]

For some reason we've had it turned off and it's no longer spinning up. Only used it a few times.

It was wired to come on with the light but I also popped an isolation switch outside the room and had a spark wire it all up.

I've got the multimeter. Just wondering what probe where and what setting. I reckon a seized motor as its a bit damp but just need to be sure.

Thanks!

20170312_172518

• matt84
• 12 Mar 2017

 

[333rocky333]

Are you saying the impeller wont spin by hand, with the power OFF, most if not all should spin freely

 

[flameport]

I've got the multimeter. Just wondering what probe where and what setting.

Black in the black COM socket. Red in the V or Volts socket. Do not use the Amps / A socket.
Set to AC volts, if it has a choice of voltages it needs to be above 240V - usually 1000 on cheap meters.
The two probes on the two terminal screws which have wires in them.

If you get 240V or somewhere near that, the fan is bust.
If not, then the switch is off, defective, loose connection elsewhere, etc.

 

[ban-all-sheds]

If not, then the switch is off, defective, loose connection elsewhere, etc.

Or it's an ELV fan.

 

[333rocky333]

Or it's an ELV fan.

Anythings possible, but would they mark the terminals as L and N

 

[ban-all-sheds]

I can't see where they do.

 

[333rocky333]

Well not exactly on the terminals, its embossed on the white casing, yet further over it also has N and T, so i quess the casings used on numerous fans and maybe on an ELV fan as well

 

[Taylortwocities]

Or it's an ELV fan.

That's the timer board right there in the picture. In an ELV fan the timer function is in the transformer unit, and that would be located separately to the fan.
It's a bog standard 230v (nominal) non-timer fan.

 

[Jackrae]

First test is mechanical ; do the fan blades spin freely. If not then fan is seized. If they do spin freely, then with power applied and fan doesn't rotate, confirm you have voltage across the incoming terminals. If you do have volts and fan doesn't rotate then fan is goosed.