Do bi-metal relays wear out?

[alloy]

I've got a relay on my parts washer and it's just started tripping. Runs for about 3 minutes them trips, comes back on in about a minute and runs for a couple then trips again.

Second pic is the electrical specs on the washer.

 

[silence dogood]

It could, or something is drawing too much current to cause it to trip. A wiring diagram would be very helpful.

 

[Flyinfool]

WOW that is a lot of power for a parts washer, must be big.

I would start by checking the amp draws to see if something is drawing to much and causing the relay to trip like it is supposed to.
A bi metal relay will not wear out when it is not doing anything. if it had never been tripping before then it was not moving so there should be nothing worn.

 

[carlquib]

Can you measure how many amps the machine is currently pulling? Bi metal can wear out if they are tripping all the time. I know we have had to replace them after having motor problems.

Brian

Sent from my SM-N976U using Tapatalk

 

[alloy]

Unfortunately don't have a diagram.

Obsolete model. Not supported anymore.

 

[Jim F]

Dis-connect the heater, see if that fixes the tripping.

 

[alloy]

It's not been tripping before. I can turn the heater off and run just the motor and it still trips. I believe the heater is on a separate circuit.

It is a big parts washer. I use it for transmission housings. One of the best things I ever bought for my shop.

I hate to admit it, but I don't know how to check the amp draw. I'll do some research on doing that.

Pic of one like mine.

 

[alloy]

I see harbor freight has a clamp on amp meter. I'll pick one up on Sunday when I go to town.

 

[markba633csi]

Easiest way is with a clamp-on ampmeter- can you borrow one? Oh I see your post, yes the HF unit should work
You might check for poor or loose connections to the relay- that might cause nuisance trips also
-Mark

 

[CluelessNewB]