Compressed air cooler?

JC Daniel

Promoted Users
I have installed 1/2 inch copper piping in my shop for painting only, I have 4- 6 foot drop downs right after the compressor with ball valves. The compressor is 7.5 hp 80 gallon 26 scfm at 175 psi, I ran 50 feet of copper around the ceiling from the last drop down to the drop down for painting. I have a regulator, Motor guard m-60 then a 1 gallon desiccant dryer before the hose outlet and still get pimples all over the clear which tells me I have a water problem. What would you guys suggest to add to the system to get dry air? I need something to happen because I can not continue to spray as the system operates, Thanks in advance for any help.
 
Are you sure the pimples are from water? The desiccant just before the paint hose makes me guess desiccant particles.
When I had a water problem it made small craters. Is your desiccant getting saturated?
 
I may think it is small particles after looking at it in the sunlight today, I checked the desiccant and only an inch in the top was changing colors. What dryer are you guys using?
 
i quit using desiccant 15 years ago. its just a pia and atleast with the humidity here in nj i was extremely expensive. i had one of the old cam air systems which is now the devilbiss dad500 i think. i would wipe out full thing of dessicant in 1 day. once i got a refer dryer i havent had an air problem since.
 
put it after. almost all desiccant systems need a particle filter after. also the regulator should be the last thing. your hose should pretty much connect right into it.
 
I don't think the HF dryer will handle the scfm rating of my compressor?
I wouldn't worry about that, you probably won't be using the max cfm from the compressor anyway. BUT I notice that your line pressure is 175 psi and the max rating on the HF dryer is 140.
 
I know someone who has a HF dryer. Works fine. My dryer is an older IR that I had checked out before I started using it. Only thing it needed was refrigerant where apparently it had leaked out from sitting. Been using for several years now with no problems.
 
I use flex hose from my compress to a T in a vertical 3/4" copper line that extends to the ceiling and also has 3' drop and ball valve. From there it runs back and forth along the wall to another vertical with a T fitting and drop with valve. The T branches off and has an M60 filter, then enters a refrigerated drier. From there through some more 3/4" copper into the booth and then through a regulator/separator, another particle filter and then to the air hose.

It's probably overkill for Arizona but my air supply is clean and dry. I am not a fan of anything Horrible Freight puts out so I kept my eyes open for a brand name refrigerated drier that would handle large volume of air and high pressure.

Found this on Craigslist and couldn't believe the pricing:
Speedaire.jpg

Handles 100 cfm and the incredible part was the price - $200! A local painter was going out of business and selling everything off.
So keep on the lookout and whenever possible upgrade your system for the least amount of money possible.
 
I really appreciate the help guys, I always come here to get "all"my information. Hey Jim, Should it be this order Desiccant filter, M-60 then air regulator to the hose outlet?
 
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