Kellogg American 201TV Saga Continues...
So after getting some sunset photos of the F250, I set to work on the air compressor.
There are 4 wire terminals on the motor. These wires indicate the motor has 2 sets of windings. When wired for 220V, the windings are wired in series with ground connected to the motor frame and the 220V connected across the series windings. No neutral is needed.
Motor leads are arranged (2 and 4 were connected):
1_
_2
3_
_4
My motor was wired this way and I confirmed it by measuring resitance. I seperated all 4 wires and measured resistance again. Leads 1 and 4 are one winding and 2 and 3 are the other winding.
I connected leads 1 and 2 to 110V hot and 3 and 4 to neutral. Put it all together with wire nuts and connected the hot to a spare 20A breaker and the neutral and ground to the grounding bar in the breaker box. Flipped the breaker and it worked!!!!
After confirming that it worked, I ran new 12 gauge 2 conductor wire w/ ground to a 20A 2 way switch I mounted in a little box on the compressor (with grade 8 bolts and red loctite because its what I had lying around
).
I then wired the compressor power cable to the switch. The I pulled the motor leads back apart and put a piece of heat shrink tubing over the OLD motor leads and warmed it up. The old insulation was in bad shape, so this was cheap insurance to prevent a short.
Then I broke out the soldering gun and soldered my motor connections and put wire nuts and electrical tape over them to ensure good connections.
Next I pulled the top off the compressor and cleaned the air filter and screen and re-oiled the foam element.
Then I turned on the breaker and the switch and let it air up. Here she is running:
At 150 psi, the compressor shut off as it should. I bled air off and at 115 psi the compressor kicked back on and pumped up to 150 again.
Once it was all warmed up, I drained the oil in it and replaced it with 12 oz of new Cambell Hausfield SAE 30 compressor oil. I ran it after the change to work the new oil in.
I am very pleased with the performance. The times agree with what the Kruman rep told me it should be. 25 minutes from 0 to 150 psi and 6 minutes from 115 to 150. I also discovered that the pressure switch is still set to its factory constraints, but both the shut off and turn on pressures are adjustable
Just a little bit of plumbing work left and put some new modern quick disconnects on it and it is good to use