Contactor query

[mhar]

Don't come accross these that often but today I have one that is buzzing a bit and is warm (compared to it's neighbouring mcb's) but not hot. It appears as though it is the control input that is causing the noise and heat as I am able to turn the loads off. It is a Hagar ES240.
Does this need to be replaced or is it fairly normal for a 10 year old unit?

 

[LeeH]

You maybe able to disassemble them and give them a clean.

 

[The Ghost]

Yeh as LeeH the faces get dirty on the laminated electro magnet and causes "chattering". I have cleaned them with VERY fine wet and dry, noise disappears.

 

[Marvo]

I think the ES240 is one of those sealed type contactors in which case you won't be able to strip it and clean it. If it's noisy, check the voltage across the coil that's operating it is within the required range, if it is I'd suggest your only option will be dump it and replace.