No Power to the Pump

[Flamingo]

I have lost all my high pressure functions on one bay/checked contactor /I have 220v on the incoming power to the the contactor/when I push the contactor spring in nothing happens -no power to the motor/I changed the contactor with another one with the same results...no pwer on the output toward the motor.

 

[Eric H]

Is there 220 between all 3 legs? Did you push in the contactor and check power on the motor side?
Next would be pulling off the cover to the motor connections to check for a loose wire/ corrosion. After that I would be looking at a burnt up motor. Is there any burnt smell near the motor?

 

[Flamingo]

Thanks,I have a single phase motor. I have removed the wires going to the motor and still do not have power when I push the contactor.

 

[pitzerwm]

Flamingo, You removed the wires and you expected something to work??? Or you meant that you checked the wires and it still doesn't work?

 

[Flamingo]

I removed the wires going to the pump motor and then pushed the contactor/with a voltmeter on the lugs going to the motor .still did not have power.

 

[Eric H]

Check the Neutral. I'd do a continuity check all the way back to the panel just to be sure.
BTW: I have very little experience with 220V/1ph.

 

[car washing systems inc]

What type of overload do you have old style heater or solid state?
If it is the heater type you may have blown them on the new contactor, from a burnt up motor

 

[I.B. Washincars]

How about disconnecting the wires on the "motor" side of the contactor and stacking them on top of the wires connected to the "source" side? If the motor is good it should run as soon as the breaker is turned back on. If it runs, the contactor would have to be the culprit. If it doesn't run, it would have to be the motor or the wiring from the contactor...right???

 

[JGinther]

Considering that all of the functions do not work, my best guess is that the 24VAC that runs the controls is wired through the auxiliary contact on the overload block. Did you replace the overload block also? I am assuming that you reset the overload block in the circuit... Have you checked continuity through the legs of the overload block, and through the legs of the contactor when the pilot button is pressed and the power is off? If a capacitor melted through, and the overload is not set correctly, you may have melted the contacts in the new contactor to where they will not make sufficient contact.

Good luck

 

[Flamingo]

Thanks Pat, After OHMing the Contactor out /I have 2 bad contactors. The motor runs fine when wired direct.

 

[Turbo]

You can replace the contacts in the contactor without replacing the entire contactor.

 

[chadrpalmer]

you missed the obvious...

the pump dont work cause the vandals took the handle

 

[MEP001]

You can replace the contacts in the contactor without replacing the entire contactor.

Only rarely. Most contactors used in the car wash industry nowadays can't even be disassembled down to the contactors.