Why does my Graco spray gun spit?
Your Graco sprayer should have been primed too during set up to remove air from the pump. Without priming, air gets trapped inside the pump and hose and leads to spitting. If you did not prime the pump, disengage the pressure and cycle through some paint to purge the air. Always do this before spraying.
Why is my spray gun not spraying?
If your paint gun is not spraying paint at all, it’s most likely due to a clog either in the air vent hole or the hose. Clean any dried paint with a toothpick, and use a cleaning solvent to clear any remaining gunk. If you’ve cleaned your paint gun and find that it still isn’t spraying, take a look at the air supply.
Why is my spray gun sputtering?
The most common cause of pressure feed lines sputtering is a variation in tank pressure because paint has migrated into the pressure pot regulator or plugged the passage below the regulator. Sometimes the cleaning of the passage or regulator is all that is necessary to fix the problem.
What does overspray look like?
Overspray can come in different amounts and sizes. If the droplet are bigger, the overspray will look like hardened raindrops, but in most cases it will like dust. A very fine layer if tiny dust particles that feel very rough and hard. The color might even give away that its not dust.
How do you make an airless sprayer less overspray?
To keep overspray to the least amount possible when using an airless paint sprayer, you should keep the pressures at which your spraying to the lowest PSI possible. This can be done by slowly adjusting the pressures that you are using with your airless sprayer.
Why am I getting tails when spraying?
Increase the pressure on your airless paint sprayer – The most common cause of tails on an airless paint sprayer’s pattern is that the pressure is not turned up high enough to provide adequate even atomization of your coating throughout the pattern.
How much psi should a spray gun have?
Setting the air pressure to about 28-29 PSI for clear will ensure you having great flow out. Most HVLP spray guns will use 10-14 scfm at 40 psi. This is volume of air pressure per cubic foot.
What happens if the air vent hole becomes plugged in a spray gun Cup?
If one of the air passages become plugged, the spray pattern is not going to spray evenly. This can result in uneven mill thickness, stripes, and dry edges.