Thread: Electromagnetic switch

Originally Posted by RichardL

Hi all

I have just bougth a Kedu KJD 12 and installed it on a home-made linisher. It also has quite a loud buzz when energised but otherwise works OK (switches on and off and the motor runs the right direction). I wasn't quite sure which way around to connect it but if I had done it incorrectly, it wouldn't work at all...right?

Thanks
Richard

You could post a photo of the connections?

You could try the switch out on something low power like a light globe and that will tell you if the linisher load is causing the problem.

The last time I heard a loud one it had taken a bath inside a box in very fine saw dust and being a cheapie some must have got inside it and I ended up chucking it out.

Relays have similar problem and because they often use transparent casing it is possible to see the contacts fluttering inside them so they are not making proper contact due to corrosion or similar problems. These can eventually settle after a while or they can die completely.