sanborn black max wont start

[ikaros70]

Hi All,
I need some help with my sanborn blackmax 80gallon 5hp 2 stage compressor.
it will not turn on, dead as a door nail, no buzzing no nothing.
i tried checking what i could and am at a loss, i could really use some help!
i took the covers off and i have 117v at each pole but the magnetic start/contactor will not go down.
i tried pushing the contacts down with a screwdriver but nothing.
when i push the contacts down i get power to everthing but not even a buzzing sound?
the pressure switch has only 2 wires going to this model and the power is connecting at the contactor / magnetic start box
I have tried everything i can think of but need some help.
It was suggested that i come here and that you guys can help point me in the right direction.
any assistance would be much appreciated!

 

[ikaros70]

i wanted to add i did try the reset switch on the contactor / mag start box and the motor itself but didnt help any

 

[Gary S]

.
when i push the contacts down i get power to everthing but not even a buzzing sound?

Does this mean you measured 240v across the motor with the contacts down?

If so, and the motor doesn't run, you have a bad motor. If you aren't getting 240v at the motor, you have a problem ahead of it.

 

[ikaros70]

First let me start by saying thank you!
Without you I do not know if i would have thought to check the voltage at the motor itself. This turned out being a wiring issue, loose wire at the motor. Also found a loose wire before the motor, offhand not sure which a fault caused the issue itself?
Thank god it didn't cause a fire.
This compressor I purchased for my work shop in the mid 90's and has held up very well. I was pleasantly surprised to find it was just a loose wire from all the hears of use but also a little scary so I plan to Check all the connections this weekend.
Meant to add I measured 117 across both contacts so at that point knew wiring was screwy?
Thanks again and I will make sure to come back soon, after some sleep