Hi, I have the 3 gal. CH air compressor. Question: should I be able to adjust the pressure after I start a project and I've been using the unit for a while? For example, If it automatically cuts out at 80 LBS and I use it for a while at 80 LBS, can I then decide to increase the working pressure to 110 LBS or do I have to bleed the tank and start over and set it at 100 LBS when I start up again? Thanks!

You can adjust the pressure regulator at any time. Now the cut out pressure switch, should be set no higher than the mfg recommends. I hope you have an in inline working regulator and moisture separator. It sounds as though your working right out of the tank and want to crank up the cut out switch. don't do it. Iam guessing you bought a compressor too small to do much with. 2HP 220volt and a 20 or 30 gallon tank is bare min with 6 to 8 CFM. Even that won't run air tools for long. If you have what I see in the picture with an enclosed motor and oilless compressor it won't last long. My CH lasted 31 years and in 08 about this time I got a new one. Still going to rehab old one some day.

No just adjust the pressure thayll be no problems