Ingersoll Randｮ 7.5 HP 80 Gallon Two Stage Air Compressor

[5030]

I think I'd move south of the Mason-Dixon line and heck with insulating the compressor.

 

[The Fred]

You guys are into to this WAY TOO DEEP. I will guaranteeeee you that no oil whatever the weight will cure the problem.

I spent some quality time with the IR technician on the phone and he assured me the 7.5 single phase 220volt model IRs all do this. He told me to fix the issue replace the pulley and be done with it.

The air end has NO pressurized oil system. Also wire size and run are very important and I wasn't going to replace the 300 foot underground service to help with the issue.

Fred

 

[ray66v]

You guys are into to this WAY TOO DEEP. I will guaranteeeee you that no oil whatever the weight will cure the problem.
I spent some quality time with the IR technician on the phone and he assured me the 7.5 single phase 220volt model IRs all do this. He told me to fix the issue replace the pulley and be done with it.
The air end has NO pressurized oil system. Also wire size and run are very important and I wasn't going to replace the 300 foot underground service to help with the issue.
Fred

The wire size is the first thing I would question with a 225 amp cold starting draw.

The unloader valve, could be an issue. But, is less likely to be temperature effected.

The motor start capacitors, as well as the centrifugal clutch in the motor, if equipped, can be effected by temperature.

After reading the above, I am guessing motors were marginally sized to start with, and are are not putting out what they were rated at?

 

[GPintheMitten]

Move into your heated shop and see how it behaves
If it works fine then duplicate those conditions in the barn.

 

[The Fred]

Unloader valve is working perfectly on mine. I replaced the ceramic check valve once for failure.

It's been a good compressor but I feel 7.5 is just too big for single phase. I'm no electrician but an auto mechanic.

This compressor is rated at 100% duty cycle.....When it starts:shocked:

Starts perfectly 50 degrees and up.


Regards, Fred

 

[murphy1244]

Unloader valve is working perfectly on mine. I replaced the ceramic check valve once for failure.

It's been a good compressor but I feel 7.5 is just too big for single phase. I'm no electrician but an auto mechanic.

This compressor is rated at 100% duty cycle.....When it starts:shocked:

Starts perfectly 50 degrees and up.


Regards, Fred

I did not think you could even get a single phase 7.5 hp motor. Ah well learned me something.

 

[farmer2009]

Try your capacitors. Make sure they are working properly. As someone said temperature can have an affect on them. Especially if they are headed out. Forgot how old you said it was. Maybe you didn't.

I did not think you could even get a single phase 7.5 hp motor. Ah well learned me something.

Single phase goes to 10 hp.

 

[The Fred]

Try your capacitors. Make sure they are working properly. As someone said temperature can have an affect on them. Especially if they are headed out. Forgot how old you said it was. Maybe you didn't.




Single phase goes to 10 hp.

Thanks I will check them!

Fred

 

[ray66v]

Thanks I will check them!

Fred

The nearest HVAC supply, can get you replacements, for probably under $10 ea.

One is for start, and one is for running.

The start cap is the only one that matters with this issue.

 

[GManBart]

So, you don't have the data either.

I am not interested in non OEM specifications, they are not reliable.

You can spin all you want.

Yes, 10w40 and 40w can have the same viscosity 100F, So what. One is made for cold weather, and the other isn't

No weight is specified for T-30, Since it is made to be used in cold temps, it may very well be a multi-viscosity oil.

You continue to completely ignore the fact that IR DOES specify in their manual to use 10w oil, in their compressor, below 40F.

I NEVER said it was a bad idea to use the synthetic oil. I said it won't make a significant difference.

If he has the 10w in there that is specified in the manual, which will have a similar viscosity in cold weather, to the synthetic oil. And then changes to the synthetic, it won't make a big difference, at 20 or 30F.

BUT, if he did not follow his owners manual, and has the wrong oil in his compressor. For example, a conventional oil, that is too heavy for low temperatures, and not designed at all for cold weather use. Or, perhaps he had some 150w gear oil handy, and put that in there. And, he replaces that incorrect lubricant, with the correct synthetic oil, that is designed for use in cold weather, it will make a big difference.

You can never be too specific on TBN.

Are we good now?

Again, you're totally ignoring facts. I'm only going to point out one, since the rest are as easily discovered. You said IR doesn't give the weight for T-30. Well, the very first link I provided was IR's spec sheet listing T-30 as an ISO 100 oil....or 96.7 cSt if you want to be specific. Again, anybody can read that. They don't make XL-300 any longer, but all the companies making an equivalent (which IR says is okay) show them as ISO 100 oils.

IR says to use T-30 for low temps....a synthetic ISO oil which WILL make a significant difference over a conventional ISO 100 oil according to IR, and all the data that company after company provide for equivalent oils.

You say it won't make a difference, IR and a bunch of other companies say it will make a difference. I'll go with what the professionals suggest.