Air Compressors for Newbies- by Forrest Addy

I've got a Kaeser, and no, they're not cheap. I had one friend who went through 4 Home Depot-sold compressors in one year. I've run the Kaeser for two years solid and never had a problem. I expect another 4 or 5 years without problems, so long as I keep up the maintenance.

what model kaeser did you get?

SX-6 compressor, TA-5 air dryer and a medium sized tank. 80 gallons?

nice set-up. where in Mass. are you?

What a wealth of information!

A few months ago I bought a 120gallon, 7.5hp, 3phase Eaton compressor and am very pleased with it.

My small shop is plumbed with half inch black iron pipe, and has drops at regular intervals.

I have a regulator between the compressor and the wall that I have set to 120psi, and have the compressor itself set to 160psi. The reason I did this was because at the time I had a leak in one of my machines and didn't like the compressor kicking on several times an hour, and decided that the more psi I had in the tank, the less it would kick on. (More on/off cycles = more wear, right?)
Now the leak is fixed, but I still have the psi set at 160 on the compressor. It only kicks on once every two or three hours under normal use.
Am I doing the wrong thing here? Is having the psi set so high actually doing more harm than good? Should I just drop the compressor psi down to 120 as well?

Hi,
one of our quality guys used to work for Coleman in thier quality dept. and he said they had better luck with the aluminum head compresors than cast iron. It was due to the better heat loss from the aluminum.
Anyone know about that issue.

Another note:

At 70 degrees f you pump air into the tank. The air increases in pressure and temperature as it goes into the tank.

As the air in the tank cools back to 70 f, both the air outside and inside are equal temperature.

The excess moisture released is not from temperature; but from the added pressure.
Because pressure is the only difference between air inside and outside the tank.

Now.. If you pump to 120 psi and "dump" the water, and then draw off the air at 80 psi, the air will be a lot dryer than if it was only pumped to 80 psi.

This helps a bunch to produce dry air.

It may cost a little more to pump that high but you won't be "washing" off your parts. *Smile

Regards,

Stan-

Just got dealt industrial 80 gallon 2 stage, 5hp, has quick connects but also has 3/4" outlet on side of tank. What type of cap off fitting should I use, the two quick connects are plenty for my needs. Thanks
wileysnkskns

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Just got dewalt industrial 80 gallon two stage compressor rated for 175psi, it has two quick connects on it as well as 3/4" outlet line on the side of tank. What sort of plug will I need to block this off as the quick connects are sufficient for my needs? Thanks
wileysnkskns

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