Tighten clamp and fittings at inlet valve. 3. No output: motor runs but pump does not stroke. Thaw. If the spray pattern has tails, the pressure is set too low. Repair electrical outlet or try another outlet. Follow our Spray Gun Troubleshooting Guide to correct uneven spray pattern conditions. The lower packings are worn or damaged. The displacement pump operates, but the output is too low on the down stroke or both strokes. Proper consideration of the Airless pressure setting when spraying paint with an Airless paint sprayer is a vital point to achieve a high-quality work result. Otherwise a vacuum will form and stop the paint from flowing. Push pin into place and secure with spring retainer. The Preval Sprayer allows you to spray up to 16 ounces of almost any paint or liquid. We list different conditions, probable causes, and fixes. If this is happening, chances are good that you have a tip clog. Then, aim the spray gun into a bucket and pull the trigger for one second to blast out the clog. Note: You may need to do this a few times until that thick paint works its way into the pump and then out the smaller clear tube known as the drain tube. Strain paint before using to remove particles that could clog pump. 2. Hold spray gun trigger in open position and run about 10 seconds until air is purged. Referring to the directions in your owner’s manual, flush the sprayer with water for about one minute. If that is fine, turn off and unplug the sprayer, and check the bowl or inline filter. Aim the gun into a waste pail or scrap piece of cardboard and pull the trigger. If you sprayed oil-based materials on the last project, then pour mineral spirits into the inlet of the sprayer. View All DIY Series. Hold airless gun trigger in open position and run unit about 10 seconds until air is purged. Damaged motor cord or extension cord, or voltage too low. This troubleshooting video reviews the possible solutions to resolve any priming issues with your Magnum sprayer. The displacement is seized by dried paint. The pressure from the cup supplies paint to the gun, where a high volume of low pressure air intersects with the paint stream breaking the paint into small particles called atomization. Replace loose terminals; crimp to leads. Dried out piston packings and stuck ball valves. Be sure crank in drive housing rotates; plug in sprayer and turn in briefly to check. Dismantle and replace valve and ball. Replace any or all o these parts as necessary. A common one is that it won't draw in paint. Be sure sprayer is unplugged! Outlet valve is stuck, dirty or has worn out parts. With pressure knob at highest setting, reading should be: white and black = open; white and red = 1 ohm max. Check motor armature for shorts. Insufficient pressure - Paint line vibrates when not spraying. Suction tube loose or inlet valve loose. Pressure blisters, regular or irregular pattern are normal, however, if diaphragm is encrusted with dried paint or is hard and stiff from use and exposure to paint chemicals, it should be replaced with repair kit. If the above problems cannot be corrected, the motor could be defective. Clean tip with pointed needle and blow with compressed air. View All DIY Series. Turn off and unplug sprayer. Clean valve and replace with a new gasket and sealant. Turn the spray tip 180 degrees to the unclog position. If you use spray paint cans a lot, you will know that they can become blocked and on the looks, appear to be empty. HVLP, Conventional Sprayers Air-Line Regulators. Paint will not shut off at spray tip of airless gun. Whether you’ve been working with a Graco paint sprayer forever, or this is your, (Please scroll down to find troubleshooting tips for the TrueCoat line.). Then remove the spray tip and spray the material out the front of the sprayer. If clearance is less than 1/32", ball may not open sufficiently and pump will starve. (Clean if Clogged). Align brush leads with slot in brush holder to assure free vertical brush movement. Replace packings. Pour small amount of liquid in inlet valve to prime. Up to 15 times faster, in fact! 6. Make sure there is a vent hole in the cap of your siphon bottle or paint cup lid. Replacement every year of use is recommended. Check house electrical fuse (use at least a 15 amp). Check to see if intake valve ball and piston ball are seating properly. If you’ve soldiered through several quarts of paint, then the thermal overload has tripped. Once you get the hang of how these guns spray and refill, you can paint like a machine. Replace pin if missing. Check ON/OFF switch. Two parts that are very critical to the way an airbrush sprays are the nozzle, or tip, and the needle. If a spray paint can is in constant use on a regular basis, the cap and nozzle can become blocked. Turn off and unplug sprayer. Check ON/OFF switch. We hope this troubleshooting guide is of help to you. Check for loose suction tube or fittings. Example of the latter: Graco TrueCoat Pro Cordless. Check for loose connections on the siphon assembly, tighten, then re-prime pump. 5. See your separate spray gun or tip manual. The Goplus Airless Paint Sprayer 3000 won't let you down. You’ll need to purge the air through the VacuValve cap. Check for a clogged spray tip or fluid filter, if used. 3. 5. Pay attention to that! 3. 4. You’ll want to be sure that your Prime/Spray Valve is at Spray. Note: For easy identification of components, refer to the troubleshooting section of your owner’s manual. Debris is caught in the sprayer. 1. The pump won't develop much pressure if it is at minimum setting (fully clockwise). Remove drive housing assembly. Replace if necessary. Press inlet valve with finger to free. Be sure the gasket 667-30 is in place and that the fitting is tight. Replace transducer. Check to be sure that both the strainer and the suction tube are completely submerged in the paint. 2. Disconnect the motor start board and switch and connect volt meter between exposed terminal on switch and power cord's white wire. Since the spray pressures are much lower, the atomized paint â¦ If oil is not pumping freely back to hydraulic reservoir tank, remove knob from pressure control valve and pull stem back gently 1/8" with fingers to free ball on seat and allow oil to pump out with no resistance for several minutes. If you notice that the motor continues to run when the gun trigger is released, then that means it is not primed. If the lines are showing up in those two specific places, you probably need to move closer and slow things down. Release spray gun trigger. A. 6. First, the cup lid needs to be securely tightened and the VacuValve lid closed. Remove siphon tube and feel lower ball check to be sure it is free to move off its seat. Step 1. 11. Remove and clean or replace filter. Spray a strip of paint across a piece of cardboard to check the spray pattern. Remove pressure control and check micro switch operation with ohmmeter. Once your paint area is ready to go, youâre ready to start painting with an air compressor and paint sprayer. Once you’ve checked that the Prime/Spray Valve is pointed forward and in the Spray position, then chances are the spray tip is clogged. Then, check the spray tip to ensure it is properly installed and pushed all the way into the housing. 8. If they're clogged with dried paint or grit, the machine can't build up pressure. Check for motor damage. Connect the Power Flush adapter and a garden hose to the suction tube. The fluid displacement pump filter (if used) is clogged. It just doesn't spray like it use to. Use a volt meter or test amp at extension cord outlet to check. … 1. Disconnect black and white power cord terminals; connect volt meter to these leads. Turn off the hot and cold water valves and unscrew the sprayer from the hose with adjustable pliers if you can't push in the valve, or it won't stay in. Service the lower check valve ball check. This gun has a container that hangs under the gun body. Dismantle and clean thoroughly. With nozzle tip removed, trigger gun until heavy material appears at gun. 6. 2. Chances are the spray tip is clogged. Meter should read 105-125 VAC. Check for air leaks. Removing the guard can frequently cause damage or result in missing parts when it is reassembled. 9. Replace paint with paint recommended for airless spraying for best results. Project Series. Try to rotate motor fan by hand. But if that doesn’t work and you continue to see the lines in your pattern, then add a small amount of water of solvent. Combination valve in open position clogged or defective. Check if the green power light on the board is lit. There is a large pressure drop in the fluid hose. When transportation of paint sprayers is a challenge, order online for convenient home delivery. Also check wires between pressure control and motor. Check pressure transducer for hardened paint or damaged or worn components. 1. 1. Using a proper device according to the material is important! Check connecting rod assembly for damage. Spray â¦ If you keep it clean and store properly you won't find yourself buying another sprayer and complaining about this one the next time you go to use it. Trigger gun momentarily, then release and lock safety latch. 12. Chances are the spray tip is clogged. B. Check motor armature commutator for burn spots, gouges and extreme roughness. Purchased 2 of these paint sprayers for me and my helper to paint a full house interior including ceilings. If voltage is too high, do not operate sprayer until corrected. Without an airless paint sprayer, it takes days instead of hours to paint a house. Dirt and foreign particles are common causes. Meter should read 105-125 VAC. Meter should read 105-125 VAC. Remove to clean or replace. 5. 4. One option is a siphon gun. Sprayer starts up but does not draw in paint. Unit will not build or maintain pressure. Paint should be strained in a separate container. If this is the case, please call Graco Technical Support at 1-888-541-9788. With nozzle tip removed, trigger gun until heavy material appears at gun. This airless paint sprayer will not run if the peak voltage is above 190V. Identify the problem with the sprayer. Correct cause of overheating. Pump inlet screen plugged or air in pump or hose. Check other parts for wear. You’ll need to get that pump serviced or replaced. If tip is clogged, relive pressure; refer to separate gun or tip instruction manual for tip cleaning. For example, we have here a Graco ST MAX 395, that has a max. Thorough system flushing will help extend the life of transducer. 3. 1. Turn the sprayer upside down with the cup and strainer removed. 1. 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