Tools, Sharpening and Power Machinery - Problems with 9cfm gas powered air compressor

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devicemn
12-02-05, 03:15 PM
Hi all,

I will try and give all the info that I have and maybe someone can help me out.

I have a speedaire gas powered portable air compressor.
model #4B224A
5 hp
8 gallon
9 cfm @ 90 psi
8.5 cfm @ 125 psi

I only use a 3/8 air drill with it. The drill is rated at 4 cfm. The drill will not run non stop before I start losing pressure all the way down to 50 psi. Is this normal or should the compressor handle the drill non stop. I thought that it should hand 2 of those drills non stop since it is rated at 9cfm.

If I do have a problem with the compressor could someone give me some troubleshooting tips. I have tried to find a tech manual on web with no luck.

Could anyone give me any input where to go or what to do or is that the normal operation.

Thanks,
Bruce

GWIZ
12-02-05, 03:35 PM
Who makes the drill ?
devicemn
12-02-05, 03:38 PM
My drills are ingersolls

GWIZ
12-02-05, 08:03 PM
Assuming the drills are working properly.

Check the inlet filters.
I think some Gas powered compressors had a low or hi RPM throttle control. is it set on low ?
I would try to confirm that the pump is turning at the proper speed.
MudSlinger
12-04-05, 04:56 AM
Maybe the pressure switch that tells the compressor to turn back on is set too low. The cfm shouldn't be a problem.