I was useing my blasting cabinet this evenin and all the sudden it quit working.
I found the tip was shot,so I replaced it.Still no good.I kept trying to blow back thru the pickup tube,it would just blow off.Well I pulled the tube,it werent clogged.I took the fitting off that the media hose hooks to on the gun,found a oring flatened.So I put 1 on it.I got it to surge and then work some,but still not right.
The only other thing I found was when I hooked up to my glass beader,I eventually got some moisture.I had not drained the compressor.Hadnt been run a total of 2 hours yet,but DANG I about got drownded when I tripped the valve.I werent expectin a fire hydrant.
Anyhow.I aint tryed things since I found the moisture issue.Got past 10 oclock and I am pooped out,But what else could possiably have just went,for lack of better wording, "POOF",and caused my cabinet not to work right.
Naturaly it had to screw up on something i wanted to get done by thursday night and I have alot more work to do to get it done.

That's just growin pains for a new shop.

Sincerely

Jim Weir

Oh boy,then I reckon I need to get a another box of Goody powders for the growing pain!:>)

I have googled every combination of Blast cabinet troubleshooting and apparently I am the only knuckle head in the world with this problem.
Found alot of people that had built thier own instead of buying 1.Looks to be a good idea.
I know mine seems to like to leak dust.Even with a vacuam hooked to it.
Looks like if you built your own,you could eliminate the leak problems.

I made my blast cabinet out of a water heater cabinet lined with heavy plastic. A little crude but it works. I also had water problems until I put 2 seperators way down line from the compressor.Resperator,hood and rubber gloves are necessary. I like to use glass bead for cleaning.If I need sand I go to my powder coater and let him blast it. Sometimes you just have to improvise.
Cecil

Hey Cecil, how're you doin'? Mack, I saw a picture of a cabinet made out of an old oval fuel oil tank. Looked like a heck of a deal to me. You could get some pretty large pieces in that. Sorry, but I don't have any ideas about your problem, other than the moisture issue. I know that can drive you nuts. Did you clean out the cabinet and try a new batch of sand? Mine will get some chunks in it once in awhile, and plug it up. Dave

I hope I can git this fiqured out.
Gota 8n ford tractor comeing in,buddy is going to overhaul it and I am going to watch and help so i can learn how to pull sleeves and such.So I neeed to get this little tractor put back together.

Check your hoses. Sometimes they can delaminate, creating a "flap" inside the hose.

It worked some this morning but took twice as long as useal to do a small job.

Hi Mack, I ran into issues with water in my compressed air while painting. I solved my problem by running the air through a couple lengths of black iron pipe to raise the air temperature. As the air expands leaving the compressor tank it cools significantly and the moisture condenses. The run through the 20 feet of black iron pipe warms the air enough so that the final expansion to atmospheric pressure at the nozzle doesn't cool the air enough for condensation. It might be worth a try.

The water isn't condensing at the nozzle...it is condensing in the hose where the hot, saturated air meets a cooler surface (this being the inside of the hose, distant enough from the compressor to transfer away heat). Cooling the air after it leaves the compressor causes it to release the water.

Keep in mind too, running hot air through a separator will not remove moisture. We run air through an old AC condensor and then through a water separator when blasting. I use a wall-mount electric air dryer to collect moisture when using using my shop compressor for common tasks, but if I start running the compressor continuously to paint or blast in the cabinet I have to use the cooler. Otherwise, there will be water condense in the hose.

Mack, it sounds like you're having a venturi problem in the gun, most likely because of a clearance issue. If you took the nozzle off, you'll need to set the new one. Did you put it in and push it all the way in and tighten it? That usually will cause it to not draw sand at all or at best you'll have the sand volume cut way down. If the inside of the tip is too close to the air jet, it decreases the venturi effect and/or partially blocks the sand inlet. There is a lot going on in that little chamber and the air has to flow right. It will not pull sand, or it can even cause pressure to go backwards down the hose and push the sand away instead of pulling it in.

Loosen the set-screw or collet (whatever holds the tip in place), pull the trigger, and move the tip in and out to adjust the chamber and get the best location (when the sand is flowing best). Then tighten it up.

Thanks Ray,I bet you hit the nail on the head,because I rammed that thing up tight as I could,pushed it against the wall and tightened the screw!So I doubt it is right now.ooops.

don't oops! hehe...you didn't know! Not many people do, and the manuals that comes with those cabinets don't tell you. A lot lf guns get pitched when they start to wear a little and the aerodynamics change inside.

Most of the time when they need adjusting, they will act like they are stopped up and spit. They will cycle like on-off-on-off, and the hose will jerk back and forth. Kinda sounds like something you were experiencing. You gotta tune it, Mack! Kinda like laying that chainsaw in the log and turning the screw to hit that sweet spot!