Hit send too quickly.
This is a Champion compressor, the motor is 5 HP single phase Baldor,
it seems as though the oil was possibly never changed in it at all (it
would show signs of that near the oil drain, I think), the compressor
was likely made in 1965, the tank looks like 60 gallons.
Also the pump itself, I think is a 10 HP pump, the 5 HP Baldor looks
like an afterthought. I cannot believe that this 2 stage, 4 cylinder
pump was made to go only to 5 HP.
Possibly someone tried to install this Baldor and failed to get it
right and then this compressor made some rounds around a few people's
garages or stayed in same garage. That would be the best scenario.
The worst scenario is that the pump is bad in some way or that the
motor is bad.
The compressor has its starter removed , and lacks a gauge and
regulator switch. I have that stuff in my pile of stuff. So we'll see
how it goes.
I took some risk on it but I think that $25 is not too much to pay for
an educational experience.
You might want to check the tank for rust on the inside. Being ove 40 years
the tank may be rusted out from the inside. I bought a compressor once that
that problem, the original owner left it sitting a long time without
draining the tank.
When i started it up there were pin holes all along the bottom of the tank.
you a lot of time and expense to stick a bore scope in one of the inspection
On Fri, 13 Jun 2008 22:06:20 -0500, with neither quill nor qualm,
Ignoramus29659 quickly quoth:
The motor tag says 5hp 250V 60Hz 25A 1PH.
Besides the noble art of getting things done, there is a nobler art of
leaving things undone. The wisdom of life consists in the elimination
of nonessentials. -- Lin Yutang
You would not recall what size motor pulley was on it? Looks similar?
Anyway Wayne, I don't know if you saw my other threads, but I will
keep trying a few things as I already got some hopeful results (motor
spins the pump, but only slowly). I will bring it closer to power plug
so that there is less voltage drop, to see at least 240v on motor
The pulley seems smaller than it could have been. That gives me some
1) bad start capacitor
2) Bad centrifugal switch (stuck open)
3) Bad start winding.
Does it start if you spin it with a rope just prior to switching
power to it?
Is this on the compressor? If so, have you tried with the belt
disconnected to eliminate a stuck compressor itself?