Re: Compressor repower
Ron,
By "converter" do you mean "Roto-phase"? That is the best way to operate 3 Ph equipment from a single phase source.
The critter had one of these thingys on it
http://phase-a-matic.com/StaticDescription.htm
As far as wiring up a single phase motor is concerned, that's pretty easy, dump the "converter" (whatever that is) and wire the new motor up to 240 VAC. It's probably straight 240V so you won't even need a neutral. Just two hot legs (Black and Red) and a bare ground wire. Figure out what the running amps are and assume the starting current to be roughly three times that. (That is to size your "over-current" device - Circuit Breaker or fuse.) Many motors today will tell you what size circuit to connect them to.
Hopefully it will be that easy.
The starter has provisions for 3 wires...do I just use 2 terminals, or do I wire the ground wire thru the starter?
I'm still fuzzy on where the pressure switch gets inserted into the wiring....
Looks like this is the ticket:
Although, I am not clear on what the "M" on the circle is in the pressure switch circuit.
It appears to me that when the pressure switch closes, L1 and L3 would be shorted together?
I don't think that will work. What am I not seeing?
Any help??
ed. I found a video that even shows the chink starter which I purchased:
https://www.youtube.com/watch?v=Kb9pYlgL4Ls
Be sure to use the correct size wire. The circuit should be 125% X the current draw. Or to put it another way the current draw should not be more than 80% of the circuits ampacity.
Rog
Going to be a 40A circuit;gonna use 8ga copper....
A query: I recently ran more amps (and wiring) to the previous system. If I had reversed the 2 hot legs at the breaker, would that
have reversed the direction of rotation?
I am not sure that my compressor was rotating correctly............
What I thought I remembered was not how it should have been.