latex to acetone

What's necessary to switch a LL 3900 from latex to acetone?

We made the switch this summer in our LL3900's. Completely clean the machines of all latex using warm water and perhaps a mild soap. Once everything is clean, you can go to the acetone paint. However, if you go back to latex without thoroughly cleaning out the acetone paint, you can expect a complete mess when trying to clean the machine next time. The two paints combine to make a gummy mess. Just last night, we cleaned a machine where we sprayed acetone and then latex right after. We had to disassemble the intake pipe and screen, intake hose, filter screen, filter housing, and clean everything individually. The mess created was something not seen when spraying CR and then following with latex. In any event, the conversion can be done, just be prepared for a cleaning mess if the 2 paints get combined.................good luck, we like the acetone paints particularly because they do not track dirt as bad as other paints.

wash out latex with water- all lines run solvent- all lines run acetone-thru relief valve and line that ur gonna use to paint

To make you life easier, Cleanout the latex with water, run fresh acetone through the pump and hoses and let it sit for a day. The acetone will loosen up all the latex paint stick to the inside of all you hoses and fittings. Once you let it sit, flush it again. Then take off the pump elbow and clean the lower section of the latex slop you collected there. Jim

Jim is right on and the cleaning aspect after letting it sit for a day can't be understated. Also, putting fresh acetone in the machine removes any residual water left behind. Water becomes encased in the acetone molecules similar to how alcohol removes water.

Just want to make sure this is still the best way to switch from latex to oil, and I dont have the time to let it sit for a day... First run Solvent through the machine and than run Acetone? SW told me today to run paint thinner through my machine...this is incorrect I guess. Thanks.

i don't use solvent base paint so i really have nothing to say other than i would follow the advice of the guys on here before following "some guy at SW" advice. also, as jpanz stated, check the elbow for large clumps of semi dried paint remnants that will release due to the "hotter" solvent.

Another good way is to invest in an extra pickup tube and hose for acetone only. You can run gallons of cleaner through them but latex will hang around and cause problems. As Jpanz said clean the elbow and I would remove and clean the lower pump ball and cage.

I switch back and forth with few problems and I don't clean my machine as well as you guys are saying. I like seeing the snakE from time to time.

We only have one machine so we have to switch back and forth often. JPanz hit the nail on the head, when you can let it sit for a day its always best. If you can only let it set for a few hours it's always better than just flushing it through. We also change out the filter pretty soon after switching from one to the other no matter how much we clean it. Seems like it only takes a minuscule amount in the system to start the gum up!

How we switch from WB to Acetone: - Clear as much paint from the lines as possible. - Flush lines with methyl hydrate. - Clear as much methyl hydrate as possible. - Flush lines with water. - Clear water from lines. - Flush with acetone. - Clear acetone from lines. - Fresh can of acetone paint.

you guys do a lot compared to me.. I switch occasionally but it only involves flush the acetone paint with acetone, flush the acetone with water, go from water to latex... and the opposite. I never let anything sit or soak or flush two or three times... it's a 5 minute switch. Maybe I'm not doing it right but my machines have been fine... You guys are making me wonder..

TT@RNS wrote on Oct 1, 2015:Go to #12

you guys do a lot compared to me.. I switch occasionally but it only involves flush the acetone paint with acetone, flush the acetone with water, go from water to latex... and the opposite. I never let anything sit or soak or flush two or three times... it's a 5 minute switch. Maybe I'm not doing it right but my machines have been fine... You guys are making me wonder..

It's just a ritual to please the striping gods, don't want to cause any earthquake or floods.