At 07:23 PM 5/4/98 -0500, Brad Young wrote:
>Folks, I am getting a used air compressor. FREE. However as with
>most things there is a slight problem.
>It shorts out a 20amp breaker after pumping up to 85-90lbs,
>Things I know
>1)The controller has been replaced.
>2) The compressor was run low on oil at one time. a couple of years ago. I
>sure how long.
>3) I need to determine wether it is the compressor or the motor. (or is
>there something else)
>4) The motor draws around 12amps with no load. I understand that this is
>Does any know of how to diagnose this problem. Any ideas would be
>78 midget (mr goofy)
First, I am assuming that you have it wired for the correct voltage.
I would check the plate on the motor for power consumption etc.
so that you understand the power requirements of that motor.
Keep in mind that when the pressure starts to increase the load
on the motor can increase dramatically and you may simply be
If it is anything other than the smallest of motors and it draws 12 Amps
with no load I would guess that everything is OK and you simply need more
power. Many compressor motors need 30 or 40 Amps. I know mine needs
a 40 Amp breaker at 220 Volts (5 Horsepower motor)
59(100-6) 69XKE 72/73MGB 52MGTD