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you should put an inline air flow valve in the line for the mask you can put a T connector on the end of the hose so both the spray gun and mask can use the air line at the same time. It will work well if the compressor is large enough to handle the CFM of both the gun and the mask
If you are using a water tank for water supply, remove the water supply line from the pressure washer and connect a water hose from a faucet. Turn the water on, then crank the engine. Pull the trigger of the spray gun until water comes out. When then water starts to spray properly the release the trigger, shut engine down with pressure on the line then reconnect the water supply from the tank to the pressure washer. If this fixes the problem then the problem was "air-locked"! Happens alot with new pressure washers that have never been run. If you need any other help, please email me @ firstname.lastname@example.org
Im a professinal spray painted. Although i now what you have there are a lot of variblys this is called a conventional system. Is made for light meteral spraying on metals or fine finish objects. Paint quilty and thinning and proper air control feed and volume are the most critical as well as the envirment that you are working in do to the extened time it takes the meterial to set up and the number of coats to achive the mil thickness required for the product to proform at its specified levels. Looking at your gun if the picture is correct the upper control knob is the spray pattern control and the second knob is the paint or fulid control the amount of paint that comes out he tip that is also controlable but olny from vertical to horizontal pattern it should come out in a cone shape. And what you realy need hear is a regulator between the regulator at the compressor and the air supply at the air hook up on the gun and also a water trap in line before that so condensation drops woun't spit out the tip and pock mark the finish. Idon't know what you want to use this mechine for but it is a vary complex opperation and you had better do your homework if there is liabilty involved with what you are doing. good luck
there are two main passages in a gun.
the fluid side and the air side.
sounds like you allready did the right thing by dismanteling and cleaning everything.
lets assume the gun is good.
i would look at your air supply system. you may be over working it and it cant keep up with your demand.
or the regulator for the air is on the blitz.
drain your system of pressure. remove your air cap and nozzle from the gun. slowly increase fluid pressure till it comes out of gun. this will clean out debri from gun. reduce pressure so you don't wast anymore fluid.
clean nozzle properly / completely
clean aircap. properly / completely
inspect needle tip for abnormal wear.
if cleaned properly you will find your gun works much better.
The reason it stops spraying might be a clogged gun, hose or nozzle-tip.
The reason for pressure buildup killing the engine might be a stuck unloader valve in the pump.
While you are checking each component of the "output" side, spray some penetrating lube into the "input" side of the pump (where the garden hose connects) and let it be working on the unloader valve.
Fix the spraying problem first:
Start at the nozzle and verify that it is open by using low-pressure air. Clean or replace as needed. Next check the hose (with nozzle and gun unhooked) and finally the gun/trigger mechanism.
All must be clear and open to perform correctly.
Next, pour a few ounces of power steering fluid (or similarly LIGHT oil) into the garden hose, attach it to the pump and turn on the water supply.
Leave the "output" hose, gun, etc. UNHOOKED and point the output port of the pump (where the high-pressure hose connects) towards a vacant, safe area.
Startup the engine and allow the oil in the garden hose to work its way thru. (About 1 -3 minutes of run-time.) Shut it down and attach the high-pressure hose.
Hope this solves the problem!
Maybe just plugged. If it has the nozzle that can be rotated 180 degrees, roll it and try to spray. Sometimes a bit of debris gets in there and stops it up. If no on the rotatable nozzle, take the tip off and try to push liquid back to the container, or a waste bucket, to clear the line. You also may need to clean the tip. One last item.....since you sprayed water.....if you chased the water with the TWS, you may have made an emulsion. If so, remove the spray gun, and turn on the pump, pumping into a waste container, until the emulsion is displaced. Clean the gun. I'd say that if it'll spray water, TWS would be even easier.
i dont have so much as a solution as a couple of things you can try to figure out whats going wrong.
make sure your compressor can handle 10.5 CFM @ 50psi
hook up the gun and dry spray it to check for blockages in the air supply
if the air comes through strong and constant, fill the paint hopper with water and spray until empty
if the water comes through constant, add half of the hopper with paint thinned with penetrol or floetrol
if the paint is coming out weak or spotty, make sure the vent cap is open on the paint hopper
if the cap on the hopper doesnt have a vent, try spraying with the cap off or cracked a bit.
if that doesnt work take off the hopper and check the filter for blockages.
i suggest straining all your paint before pouring it into the hopper