Question about Air Tools & Compressors
Whenever the powered paint sprayer starts hammering, it is usually indicative that it's time to clean the filters and that the spray nozzle might also need to be cleaned out. I find this typically happens to mine whenever I'm painting a large room and wait 30-45 minutes between applying another coat, etc. I usually keep a small 1 gallon bucket of warm water around so I can just put the whole spray gun head into it, while I wait for the 1st coat to dry. That way, the gun doesn't get all gummed up with dried paint, etc. Just wipe it off well before using it again.
I also let the circulation pump run, in the priming position, for a good 5-8 minutes to mix up the paint before I switch over to (turn the knob) for painting pressure, after waiting for that 1st coat to dry, or whenever the paint has been sitting around for more than 15 minutes.
Most times the issue is the paint thickness and contaminations in the paint that cause partial blockage and get into the filter and pressure valve of the power painter. Always stir and shake the paint well before using and make sure that the bottom inlet screen filter is on the suction line and clean it often too. It doesn't take much to cause problems with these power painters, as the orrifices are so small that even small, minute specks of dried paint can cause it to malfunction.
My final recommendations are to completely clean the pressure cartridge, intake (suction line) filter screen. and the filter cartridge typically found in the hand sprayer gun handle. I keep extras of the handle filter and one extra pressure cartridge, so I can quickly swap them out should this happen (and it does/will) whenever I'm painting a large project.
Don't forget if you've never replaced the pressure cartridge valve in the power unit, then you're probably way overdue and I'd get one or two ordered, as the performance and operation won't improve without replacing it. Cleaning is a temporary fix, but the problem will continue to haunt you until you get it replaced.
Also, you can try thinning the paint slightly if you find it diffucult to prime the sprayer and keep the spraying application even and uniform. Just follow the paint manufacturers recommendation printed on the paint container for using a powered paint spray application method. I find that I typically have to thin most finish paints I use but most primers are fine straight out of the bucket.
Also, When you're at the bottom of the bucket, it is sometime better to pour the remaining paint into a one gallon can, so you can have more paint up and over the suction line to prevent it from losing suction. Either that, or switch to a new 5 gallon bucket and pour the remaining paint into the new one.
Hope you find this Very Helpful and best regards!
PS: If you don't have the owners manual for your powered sprayer, please provide the brand and model number and I'll see if I can locate one online that you can download.
Posted on Dec 09, 2009
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Posted on Jan 02, 2017
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