small emglo type compressor trips breaker

[rustybucket]

It is not a emglo but a italian look a like with twin tanks. I think it could be the client site that could have had power issues. The comparessor would start out running very very slow, then trip the cb breaker on the compressor. The unloader valve was allowing the air to come out of the compressor and the tank bleed valve was open. Just wondering if anyone has seen a case of a compressor starting VERY slowly then speeding up??

BTW, can a AC compressor clutch be addapted to one of these small type of comressors ?

 

[fj40charles]

It is not a emglo but a italian look a like with twin tanks. I think it could be the client site that could have had power issues. The comparessor would start out running very very slow, then trip the cb breaker on the compressor. The unloader valve was allowing the air to come out of the compressor and the tank bleed valve was open. Just wondering if anyone has seen a case of a compressor starting VERY slowly then speeding up??

BTW, can a AC compressor clutch be addapted to one of these small type of comressors ?

I'm guessing the slow running motor is an indication of problem with the motor causing it to draw too many amps.
I have 2 Emglo twin tank compressors and they've never tripped a 15 amp breaker.

 

[Dirtsquirt]

heat em up

Are these directdrive units?
if so it has been my experience that you need to warm em up in the winter to get em to crank.
It is possible the start capacitor is shot or the start switch is broken.
In order of probability. Capacitor, Cold (I have a 1 hp Fini that wont start unless it is over 40deg f.), start switch commonly
they use external current relays so they are easy to get at but hard to diagnose.

Have you checked the obvious. What voltage is the site providing.
If this is a belt drive unit. the motor is wireable 110 or 220v (typically) Confirm it is wired properly.
remove the little plate on the back there usually is a legend on
glued to the little plate or on the main motor decal.

We used to wire ours up with a dual voltage switch. same plug
flick the switchs and instantly rewired for a different voltage.

 

[D'Animal]

We used to wire ours up with a dual voltage switch. same plug
flick the switchs and instantly rewired for a different voltage.

That is the way mine is wired. Flip a switch from one to the other.

 

[haryv]

This is a 110v unit. Source was 110 volts. I did not have the problem running the unit at my place. Perhaps he had wiring problems at his commercial place? Could be to much resistance sending not enough current to get my unit started.

I may just buy a etek motor to run off my 12 volt batteries to run the compressor. No need for external power.

 

[D'Animal]

Is there oil in the compressor?

Can you turn it by hand?

 

[4XLT]

good suggestions so far - especially the oil; is it "oil-less"? most aren't.

are you using an extension cord?

a long ext cord or an ext cord with too small gauge will increase resistance. very common to see long 16ga cords used but a tool with a high amp draw needs at least 14ga; 12ga is best especially if more than 50 ft is needed.

without proper lubrication maintenance the pump will fail, without proper amperage, the motor's armature will burn up

hth