One thing to be aware of when running solvents through these things is that many models have an internal Visifilter (usually the totally sealed one) on the lines (some have just a fiber filter). You should replace that at this time. I always remove it before cleaning the pump... otherwise it can store a lot of fluids you probably don't want hanging around in the machine. I have tried recirculating the solvent, but the exhaust port pressure valve seems to always leak solvent, so I just cover the port with a rag. Also, by not recirculating the solvent, you don't recirculate grunge back into the machine.

Agreed, the filter won't pass liquid at a reasonable flow rate, so it should be removed for cleaning. The filters can be cleaned with alcohol and a little compressed air to dry them (low pressure), though. I clean and reuse the felt filters many times too.... and when they are too far gone, I replace them with a cotton ball. The exhaust ports on my pace units seem to seal ok. They are designed to leak as a way of adjusting the output pressure. When they are full on, they should be sealed.... should be isn't the same as are, though. Cleaning such things is always a case of dilution being the solution to pollution. You are trying to thin out the rosin. The first batch of alcohol is just to soften the rosin, and move the bulk of it out... It will get pretty yucky, and will take a while. After it is done, nd flushed, it could be worth while to just pass the alcohol through the pump to waste. I tend to use 3 small (1/3 cup) jars, and it is good enough. Because I don't like to through out solvents like this, I rotate the jars with each cleaning. The first pass jar is discarded, and the 2nd pass jar becomes the new first pass jar, the 3rd pass jar becomes the new 2nd pass jar, and the old 1st pass jar gets filled with clean to become the new 3rd pass jar. -Chuck Harris Mark Sims wrote: > > One thing to be aware of when running solvents through these things is that many > models have an internal Visifilter (usually the totally sealed one) on the lines > (some have just a fiber filter). You should replace that at this time. I > always remove it before cleaning the pump... otherwise it can store a lot of > fluids you probably don't want hanging around in the machine. > > I have tried recirculating the solvent, but the exhaust port pressure valve seems > to always leak solvent, so I just cover the port with a rag. Also, by not > recirculating the solvent, you don't recirculate grunge back into the machine. > _______________________________________________ volt-nuts mailing list -- > volt-nuts@febo.com To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the > instructions there. >

I have a dot of steel wol ( is that english ? ) before the felt filter ( inside the glass tube) that works great. The felt stays clean and the tin does not fill up the steelwol ( fine metal wire what looks like wol, the fur of a sheep, it is used for polishing and sanding). Now I only have to open the tube, the old tin drops out and thats it. I have a mbt250 here is the picture http://www.pa4tim.nl/?p=2468 this in case the alcohol thing is not for all models ;-) Fred PA4TIM Op 7 nov. 2011 om 14:53 heeft Chuck Harris <cfharris@erols.com> het volgende geschreven: > Agreed, the filter won't pass liquid at a reasonable flow rate, so it > should be removed for cleaning. The filters can be cleaned with alcohol > and a little compressed air to dry them (low pressure), though. I clean > and reuse the felt filters many times too.... and when they are too far > gone, I replace them with a cotton ball. > > The exhaust ports on my pace units seem to seal ok. They are designed > to leak as a way of adjusting the output pressure. When they are full > on, they should be sealed.... should be isn't the same as are, though. > > Cleaning such things is always a case of dilution being the solution > to pollution. You are trying to thin out the rosin. The first batch > of alcohol is just to soften the rosin, and move the bulk of it out... > It will get pretty yucky, and will take a while. After it is done, > nd flushed, it could be worth while to just pass the alcohol through > the pump to waste. I tend to use 3 small (1/3 cup) jars, and it is good > enough. > > Because I don't like to through out solvents like this, I rotate the > jars with each cleaning. The first pass jar is discarded, and the 2nd > pass jar becomes the new first pass jar, the 3rd pass jar becomes the > new 2nd pass jar, and the old 1st pass jar gets filled with clean to > become the new 3rd pass jar. > > -Chuck Harris > > Mark Sims wrote: >> >> One thing to be aware of when running solvents through these things is that many >> models have an internal Visifilter (usually the totally sealed one) on the lines >> (some have just a fiber filter). You should replace that at this time. I >> always remove it before cleaning the pump... otherwise it can store a lot of >> fluids you probably don't want hanging around in the machine. >> >> I have tried recirculating the solvent, but the exhaust port pressure valve seems >> to always leak solvent, so I just cover the port with a rag. Also, by not >> recirculating the solvent, you don't recirculate grunge back into the machine. >> _______________________________________________ volt-nuts mailing list -- >> volt-nuts@febo.com To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the >> instructions there. >> > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there.

This old threat came to mind because I have problems with my Pace sucker. The handpiece was blocked so I took it apart for cleaning. Then I noticed the pcb was in bad shape so I cleanen and restored that to. Doing all this I wanted to flush it with nafta but I can not find the exhaust port. It is a MBT250 See: http://www.pa4tim.nl/?p=2468 I have a mabual but that is only for operation. Fred Mark Sims schreef op ma 07-11-2011 om 13:06 [+0000]: > One thing to be aware of when running solvents through these things is that many models have an internal Visifilter (usually the totally sealed one) on the lines (some have just a fiber filter). You should replace that at this time. I always remove it before cleaning the pump... otherwise it can store a lot of fluids you probably don't want hanging around in the machine. > > I have tried recirculating the solvent, but the exhaust port pressure valve seems to always leak solvent, so I just cover the port with a rag. Also, by not recirculating the solvent, you don't recirculate grunge back into the machine. > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there.