Ingersoll Compressor Problem???

[kidkrawler]

I have an Ingersoll Rand 6.5 horse 80 gallon compressor that has been sitting since I got it, maybe 6 years ago.

I finally hooked it up tonight at my house and it turned on immediately.

The issue is it turns over very slowly at first, then after 5-10 revolutions it starts to speed up and act like it is going to take off. But at that point it sits at a low rpm, sounds like it is compressing a little and just revs up and down a little and makes a clanking noise.

Anyone have any experience with these? Is it maybe cold and needs the oil changed or does it sound like it is royally fawked?

The other two I have when you kick them on rev up immediately and sounds completely different than this one.

Any suggestions???

[toyota88]

maybe there is/was moisture in the cyl. and rust formed, you started it up and it tore free and broke some internals..

[kidkrawler]

I turned it on again, it doesnt sound like it broke up, just wont rev up...

[EMT]

Does the motor have a start and
run capacitor on it?

[kidkrawler]

Sorry I dont know what that means, does that let it run at a certain speed then change the speed?

[thelbz]

The start capacitor gives the motor more power to get it started. But at my work we use IR compressors and it seems that they go through 1 a year in every part of the plant but they run for 18hrs a day.

[Wicked_S10]

If the start capacitor is bad, the motor wont start at all, it will just sit there and hum and get hot. The start capacitor excites the start windings, and is what gets the motor turning in the proper direction. If the run capacitor was bad, it would still start and run just fine, but may not ever make its maximum horsepower, it could also cause it to run hot.

A clanking and difficult time getting up to speed, combined with the fact that it sat for 6 years leads me to believe that your pump is fawked. It can probably be rebuilt, but my guess is you broke one rod or took the bearings out of one of them. Did it have good air compressor oil in it when fired it?

Another thought, you didn't perchance try to hook it up to 110vac when its wired for 220, or visa versa?

[toyota88]

If the start capacitor is bad, the motor wont start at all, it will just sit there and hum and get hot. The start capacitor excites the start windings, and is what gets the motor turning in the proper direction. If the run capacitor was bad, it would still start and run just fine, but may not ever make its maximum horsepower, it could also cause it to run hot.



x2 on the start and run capacitor info.......i still say pump, maybe put some tranny fluid in the pump and let it sit in the cyl for a few days....drain it, refill w/oil and try ti fire it up again, it's worked many times for me with "time siezed" car engines...i doubt it will work in this situation but, it's worth a try. i think it (the pump) was slightly siezed and when you started it up it tore somthing in the pump up.

[unimog]

Drain the oil and put 10 wieght non detergent oil in for winter, the oil is to thick. I have to change mine every fall. I heard that full synthetic doesn't cause that problem, but I havn't tried yet.

[mason44]

Sounds like the belt could be slipping

[stock 87]

IR's are shipped dry Check the oil. 6 years is a long time.
Make sure you have the proper power supply.

[Wicked_S10]

Sounds like the belt could be slipping

How the fawk did you come up with that? It would sure as fawk be squealing, not clanking if the belt were loose.

[nate379]

:laughing:

Disco the belt and see if the motor is ok without the pump.

Sounds like pump damage to me. I'd pull the pump apart and check... they aren't all that hard to work on.

[KLF]

We upgraded a compressor this fall, it ran like that brand new. It would start, run funny, then pop the breaker. Turns out it was too far away from the breaker, and the wire was undersized, so the voltage was too low. I flipped the voltage to 240V, rewired the breaker to add another hot leg (2 pole breaker), it ran fine after that.

Just something to think about and check.

[kidkrawler]

I figured it out, the wire coming out of the compressor ahd 4 wires. I hooked 2 to hot, one to ground and one to neutrak in my box. We pulled off the regulator to check it and the compressor only required 3 wires, one hot, one ground, one neutral. It works great now.
Thanks for the help