Tripping Circuit Breaker

[j.sheridan@joyceelectrica]

Has anyone had an issue with a single bay randomly tripping the power circuit breaker? All wiring has been replaced, breaker has been replaced, motor has been replaced. Any help/info would be great.

Thanks!

 

[Eric H]

3 phase? You may be losing a leg (phase)
Tighten all of the lugs on the motor starter and breaker.
I had 1 dryer motor that would drop a phase about once a year. I had it on my PM list to tighten all the lugs once every 6 months. If I forgot to do it I’d have an issue. I eventually replaced the motor contractor and haven’t had an issue since

 

[Blanco]

Swap the contactor and overload from another bay and see if the problem follows

 

[j.sheridan@joyceelectrica]

3 phase? You may be losing a leg (phase)
Tighten all of the lugs on the motor starter and breaker.
I had 1 dryer motor that would drop a phase about once a year. I had it on my PM list to tighten all the lugs once every 6 months. If I forgot to do it I’d have an issue. I eventually replaced the motor contractor and haven’t had an issue since

We have replaced the contactor already, all terms are torqued.

 

[j.sheridan@joyceelectrica]

Everything on the power side has been replaced.

 

[I.B. Washincars]

Pump pressure set too high?
Something downstream failing, causing the pump to deadhead momentarily?

 

[j.sheridan@joyceelectrica]

This is a possibility. Thank you!

 

[TMoliver]

Sounds like pump pressure so check to see if the unloader / regulator is not sticking due to trash in it.

 

[bNc]

Hi all. I'm going through a similar situation.
I replaced the motor and it tripped after a few washes. Can the belt be an issue if it's too loose or too tight? Can the pulley on the Cat pump 310 have something to do with it? I Only ask because when I try to turn the cat pump pulley without the belt on, it is super hard. Is that normal?
J. Sheridan, did you find a solution?

 

[Randy]

Hi all. I'm going through a similar situation.
I replaced the motor and it tripped after a few washes. Can the belt be an issue if it's too loose or too tight? Can the pulley on the Cat pump 310 have something to do with it? I Only ask because when I try to turn the cat pump pulley without the belt on, it is super hard. Is that normal?
J. Sheridan, did you find a solution?

When you turn the pulley on the Cat pump you should have some resistance, it shouldn't be super hard to turn. Get out your amp meter and see how many amps the motor is drawing when the Cat pump is running, then check the label plate on the motor to see how many amps the motor is supposed to draw. The Cat pump might be dragging down so it will blow the breaker.

 

[bNc]

Thank you Randy. When I was going to check the amps, there was a wire-nut that had came off two wires. I tighten it and used electrical tape and this solved it for me.

Another question, I'd like to have an extra pulley in stock, but there's another piece with the pulley. How do I know which pulley to buy and what about the other piece? Sorry if I'm not clear, I don't know the name of parts. Posting a picture.
Thank you to you all in advance.

 

[Randy]

That thingy that the arrow is pointing to is a 20mm H bushing, Cat pumps shaft size is 20mm. To get the H bushing out of the pulley thread 2 1/4" grade A bolts an inch long into the threaded holes on the H bushing and push it off of the pulley. When you install the H bushing and the pulley use the grade A bolts to pull the pulley onto the H bushing. The pulley size should be on the side of the pulley.

 

[bNc]

That thingy that the arrow is pointing to is a 20mm H bushing, Cat pumps shaft size is 20mm. To get the H bushing out of the pulley thread 2 1/4" grade A bolts an inch long into the threaded holes on the H bushing and push it off of the pulley. When you install the H bushing and the pulley use the grade A bolts to pull the pulley onto the H bushing. The pulley size should be on the side of the pulley.

Thank you Randy, your help is so much appreciated.