So originally I was going to ask work if I could take an early 2000's Atlas Copco GA5 that's been sitting in the back for 8 years untouched for my garage. It's a 200v machine and missing a cover so it's never going to be a loaner unless there was one customer that needed a 7.5hp and had sagging...
Ah yea I get it. That's good planning. So I would just get the biggest HP your circuit can handle. Like I said if you can get a good deal on a constant run pump option pump go for it especially with blasting. Your starter and motor caps takes the biggest hit starting all the time. The pump...
This is a very long winded reply of just saying split your demand between two units. It's very common. Also The rolair is junk. I'd never recommend it unless it was free.
Desiccant dryers are super inefficient and we only sell them in places they need air dryer than freezing. Ie a compressor room sends air outside to another building in the winter. The dewpoint of 35f on a refer dryer won't get the water out and the pipe outside at 15f will condense the water out...
Did you start making anything yet? I work with compressed air dryers everyday. The best kind to design for your application is a thermal mass type. I got one for free from a customer. The ***** is heeeaaaavvvvyyyy filled with glycol.
Hey thanks Ive only been around this stuff professionally for 2 years but I have a great teacher and hes been doing it for a job since 1992 (Its my dad lol)
Those 80s T-30s are great units as long as you keep oil in them. If you're not sandblasting what is your average air consumption? Like...
Yes because it will run non stop anyways so why pay for extra storage. At a certain point you will hit equilibrium where the air leaving the tank is as much as the air being pumped into it and at that point it doesn't even matter the size of the tank. Our sandblasting shops customers have small...
It only affects if you plan on not having a little extra capacity in your pump. Some customers size their stuff right on the edge of their needed volume. In the real world 7.5hp should be about 28 cfm at 90 pounds. So with sandblasting go for the biggest hp your circuit can handle because...
Your cfm lowers at higher pressure for given hp. A 40 cfm compressor which is about 10hp @ 90 psi (I think it's actually 38 cfm). At 175 psi it's less. Just keep that in mind. If you're gonna sandblast I highly recommend an air dryer at those cfm.