6. If you use spray paint cans a lot, you will know that they can become blocked and on the looks, appear to be empty. Slowly increase pressure setting to see of motor starts. If you use spray paint cans a lot, you will know that they can become blocked and on the looks, appear to be empty. Flip the on/off switch ON and then OFF until the pump is about to stop and then turn the sprayer ON and then OFF again. Then turn the sprayer’s pressure control knob clockwise until the motor starts running. Clean all strainers and filters in system. Aim the gun into a waste pail or scrap piece of cardboard and pull the trigger. Then remove the black o-ring on the pump inlet and clean/lubricate it. Be sure pump does not continue to stroke when gun trigger is released. (Clean if Clogged). Strain paint before using to remove particles that could clog pump. Allow unit too cool down. This is one of the easier fixes. If it's too cold, the spray gun is more apt to clog. 4. A. Ensure suction nut is tight and lower ball cage O-ring is not worn. Step 1. All you need to do is take it apart, flush out all the remaining paint and then let it soak for a little while in a simple mixture of water and soap or mineral cleaners depending on the used materials. Replace nozzle tip and you're ready to spray. 5. Two parts that are very critical to the way an airbrush sprays are the nozzle, or tip, and the needle. Check ON/OFF switch. Pull the trigger for a second to clear out the clog. White and red = open. Remove pump intake head. Latex paint hardens quickly and permanently inside Spray Gun. Turn the spray tip 180 degrees to the unclog position. Fluid leakage at upper end or fluid section. Metal object being painted not grounded. 1. Determine if sprayer at high pressure with small tips, which causes excessive heat build up. 2. The motor and displacement pump operates, but paint pressure is too low, or none. Finally, reinstall the strainer on the suction tube. Air in hydraulic system due to fluid level low in crankcase or due to shipment. So the best way to reduce tip clogs is strain out the larger debris from your paint before filling your sprayer. Securely reconnect all wires. Turn on the pump and move the prime/spray lever to the “spray” position. Pump inlet screen plugged or air in pump or hose. Combination valve not open or clogged. Feel motor case. Since the spray pressures are much lower, the atomized paint … TrueCoat sprayers are well-suited for small interior, exterior and specialty projects where a large airless sprayer would be too much work. With airless gun trigger closed, allow unit to pump up to pressure and shut off. performance of 2L/min, which means for example with this equipment it is not possible to spray spackle. Chances are the spray tip is clogged. Remove motor and have motor shop resurface commutator if possible. Aim the spray gun at your waste bucket and then turn the spray tip 180 degrees to the unclog position. Example of the latter: Graco TrueCoat Pro Cordless. Turn combination valve counterclockwise to positive stop. 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. Building circuit breaker opens as soon as sprayer switch is turned on. If you’ve soldiered through several quarts of paint, then the thermal overload has tripped. Press inlet valve with finger to free. Up to 15 times faster, in fact! The lower packings are worn or damaged. For example, we have here a Graco ST MAX 395, that has a max. Remove suction hose. Repair or replace any damaged wiring or terminals. Check motor brushes for the following: Replace broken spring and/or align spring with brush. View All DIY Series. Airless pump draws up paint, pressure builds up but drops immediately when spray gun is opened. Plug in and turn on sprayer. Turn on the pump and move the prime/spray lever to the “spray” position. Remove the strainer. 1. 3. The upper check valve ball is not seating properly. Replace nozzle tip and you're ready to spray. Clear material hose of thick material and thin material per thinning instructions. Typically, clogging is a result of debris in your paint. The lower check valve ball is not seating properly. Just let it cool down for 20-30 minutes and then try again. Step 2. Check spring for excessive wear - it must be long enough to be in compression when seat is all the way in its nest. Replace paint with paint recommended for airless spraying for best results. Fluid leakage out relief hole at pressure control. If this is happening, chances are good that you have a tip clog. Pressure adjusting knob not properly set. If you’re having other difficulties with that are not listed above, refer to your owner’s manual or contact Graco Technical Support at 1-888-541-9788. Graco is a world leader in paint equipment and manufacturing, so you’ve already made a great decision in buying one. However, 90% of the time, that simply is not the case. The most common reason across the board for your, Understanding the Different Types of Digital Multimeters, How to Use a Paint Sprayer with Air Compressor, Everything You Need to Know About the Best Portable Jump Starters, Painting a Fence with a Sprayer – How to Guide, Common Staple Gun Problems and How to Fix Them, Homeright Power-Flo Pro 2800 Airless Paint Sprayer Review, HomeRight Quick Finish Paint Sprayer 2412331, HomeRight Super Finish Max C800971 Review, Top Professional Airless Titan Paint Sprayer, Top High Efficiency Airless Titan Paint Sprayer, Earlex 0HV6003PUS Spray Port 6003 HVLP Paint Sprayer, Central Pneumatic HVLP Touch Up Spray Gun, TCP Global Professional Gravity Feed HVLP Spray Gun, NEU MASTER HVLP Home Electric Paint Spray Gun Review, Innova 3320 Auto-ranging Digital Multimeter. Of course, this is the ultimate question so we’ll get right to it. It is spring loaded and should move about an 1/8". With pressure knob at lowest setting and stem pushed into control, readings should be: white & black = 1 ohm max. Observe resting position of pump rod. Correct cause of overheating. 13. Remove the electrical cover on the bottom of the machine. 1. The motor operates, but the paint pump doesn't. If the above steps don’t resolve the problem, then you’ll need to contact the Graco Technical Support experts at 1-888-541-9788. Turn material adjustment knob until desired flow is achieved. Replace knob on pressure control valve. Immerse suction tube in paint. Then, aim the spray gun into a bucket and pull the trigger for one second to blast out the clog. Prime pump with compatible solvent. If pump consistently comes to rest with rod fully extended, the piston packings and/or piston valve may be worn. Unfortunately, there’s no DIY fix for this one. Replace packings. If this is the case, please call Graco Technical Support at 1-888-541-9788. Check sprayer power supply cord (50) for visible damage such as broken insulation or wires. Once your paint area is ready to go, you’re ready to start painting with an air compressor and paint sprayer. Check motor thermal cutout switch. 3. They can help you identify the problem and hook you up with replacement parts. Improper material adjustment. Hold spray gun trigger in open position and run about 10 seconds until air is purged. Meter should read 105-125VAC. Remove drive housing assembly. If pump momentarily starts, internal leak is indicated and fluid section rebuild is necessary. Meter should read 1 ohm maximum. Pay attention to that! How We Tested. If your airless paint sprayer stops spraying all of a sudden, it is likely due to a clogged tip. Check motor armature commutator for burn spots, gouges and extreme roughness. When using a sprayer, preparation is essential: Check the Temperature The ideal temperature for spray painting is between 45-75 degrees. Add more paint. 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. 2. Service the lower check valve ball check. Note: For easy identification of components, refer to the troubleshooting section of your owner’s manual. Dried out packings or stuck valve balls. 1. Check breaker. Check ball and seat for nicks; replace as needed. 6. Once you get the hang of how these guns spray and refill, you can paint like a machine. For example, we have here a Graco ST MAX 395, that has a max. You’ll want to be sure that your Prime/Spray Valve is at Spray. The displacement pump operates, but the output is too low on the down stroke or both strokes. If the light is "OFF", proceed to Step 3. Dirt and foreign particles are common causes. 1. … Spray a strip of paint across a piece of cardboard to check the spray pattern. Have service center recalibrate the pressure control. Trigger spray gun several times under pressure. Clean or replace element. If your airless paint sprayer stops spraying all of a sudden, it is likely due to a clogged tip. This is completely normal and part of the Graco spray painter design. 2. Turn valve counterclockwise to positive stop. If voltage is too high, do not operate sprayer until corrected. Turn the spray tip back to the spray position and get back to the job. Spray … 10. Find the arrow-shaped handle and turn it so that it is pointing backwards. Pump draws up paint but the pressure does not build up. Vacuum valve - It also regulates the flow of oil into the pump. Check house electrical fuse (use at least a 15 amp). 2. 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. 6. 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. Check for air leaks. With nozzle tip removed, trigger gun until heavy material appears at gun. Turn off and unplug sprayer. © … 3. Add 10W-30 oil to crankcase. Tighten packing nut/wet-cup. Pro Series. DIY Series Perfect for DIY homeowners, fixer-uppers or beginners looking for a fast and easy alternative to … Check extension cord for visible damage. Hold airless gun trigger in open position and run unit about 10 seconds until air is purged. While I brushed on the paint for the trim, this time around, we decided to try spraying all the doors with a paint sprayer (we’re long time fans of the Wagner Flexio 590), instead of hand painting them. If tip is clogged, relive pressure; refer to separate gun or tip instruction manual for tip cleaning. Replace any or all o these parts as necessary. Otherwise a vacuum will form and stop the paint from flowing. Not all sprayers support this, however. Check for a clogged spray tip or fluid filter, if used. Plug in sprayer and turn ON. Remove siphon tube and feel lower ball check to be sure it is free to move off its seat. The Preval Sprayer allows you to spray up to 16 ounces of almost any paint or liquid. 3. If switch remains open after motor cools, replace motor. We hope this troubleshooting guide is of help to you. See Electrical - What To Check, item 4, on page 13. Referring to the directions in your owner’s manual, flush the sprayer with water for about one minute. First, reverse the spray tip 180 degrees to see if paint can be sprayed. Project Series. 1. 3. 1. 1. Always use a minimum 12 gauge, three-wire extension cord 9. Unit hose air leak (bubbles blowing out bypass hose.). Trigger gun momentarily, then release and lock safety latch. Follow pressure relief procedure then replace tip. Ensure the ON-OFF toggle switch is in the "ON" position and that the Pressure Control Knob is fully CW (maximum pressure). 2. 2. 1. Also check that the unit is plugged in. Page 8 Delayed or inadequate cleaning will permanently clog the Spray Gun. If clearance is less than 1/32", ball may not open sufficiently and pump will starve. 3. Tighten clamp and fittings at inlet valve. Combination valve in open position clogged or defective. Make sure the prime/spray knob is pointed in the downward prime position. Remove the tip and/or filter and clean them. Slight leakage from transducer is normal. If you notice that the motor continues to run when the gun trigger is released, then that means it is not primed. When the paint makes a splat, it's called spidering. If the light is "ON", go to step 7. Connect the Power Flush adapter and a garden hose to the suction tube. 1. Try not to be too eager to get the job done. Thorough system flushing will help extend the life of transducer. 1. You definitely don’t want this, since it’ll leave an uneven finish. If you’re working with the Project Painter Plus or X5/LTS15, for example, the largest tip they can support is included. One option is a siphon gun. Try reversing the spray tip 180 degrees to see is paint can be sprayed. Also check wires between pressure control and motor. Release spray gun trigger. You can do this by reversing the tip and spraying the paint back into the paint bucket until the thinner material is worked into the paint hose. For additional length, more airless hose may be used. Then turn the spray tip back to the spray position and test it out. Hold spray gun trigger in open position and run unit about 10 seconds until air is purged. With most tips, it’s easy to get rid of clogs. 4. If it is not checking, there will be a loss of pressure. Insufficient pressure or no pressure - No obvious symptom. Check switch with ohmmeter. Turn off and unplug sprayer. 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. See your separate spray gun or tip manual. Tighten to 185 in-lb. Suction tube not totally immersed in paint. Insufficient pressure - Paint line vibrates when not spraying. Popular Stories. If the lines are showing up in those two specific places, you probably need to move closer and slow things down. Clean tip with pointed needle and blow with compressed air. If the above problems cannot be corrected, the motor could be defective. 3. 1. How to choose the right spray tip for your airless paint sprayer? Be sure the gasket 667-30 is in place and that the fitting is tight. 2. If it's too hot, the paint will dry too quickly and it won't bond. You'll finish your DIY projects a lot quicker when you're using a house paint sprayer indoors and out. You can do this by trying to squeeze all of the air out of the cup and priming. Poor air flow through filter. Depending upon the material you’re using, you could also try adding a small amount of water or solvent. Prime pump with compatible solvent. 9. The suction tube is the larger braided tube. If it sprays then means there is air in the cup. Check for frozen or hardened paint in pump. Air entrapped in the fluid pump of the hose. 3. 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. Hums, but does not start or run correctly. If the spray pattern has tails, the pressure is set too low. 1. Remove intake valve and clean. It happens when the paint is too thin, the pressure too high, or you are too close. Check motor armature for shorts. Reset building circuit breaker; replace building fuse. Start by slowing down your arm movement. Clean brush holders. 2. So the best way to reduce tip clogs is strain out the larger debris from your paint before using it. If there’s not a specific High position, just increase the speed setting to the highest setting. The displacement is seized by dried paint. Paint will not shut off at spray tip of airless gun. Replace brushes if less than 0.5 inches long. Periodically remove residue from its cylinder port. Check connecting rod assembly for damage. Excessive extension cord length or improper wire gauge. Push pin into place and secure with spring retainer. Unit will not build or maintain pressure. You have many options with paint sprayers, so make sure that you choose the one that works best for you and for the job you’re doing. Disconnect black and white power cord terminals; connect volt meter to these leads. The displacement pump operates but the pressure is too low. Never remove the third prong or use an adapter. Ball should be round, free of nicks and cuts and not smaller than .360 diameter. (Which one you add depends on your material.). 1. Lack of Pressure. Be sure sprayer is unplugged! Replace ON/OFF switch. Be sure ambient temperature where the airless paint sprayer is located is no more than 90 degrees F and sprayer is not located in direct sun. Dismantle and clean valve. Check motor switch. Be sure male terminal blades are straight and firmly connected to mating part. Airless paint sprayer. There is a large pressure drop in the fluid hose. Find the arrow-shaped handle and turn it so that it is pointing backwards. Paint should be strained in a separate container. 1. Service upper and lower check ball valve. 2. Clean and inspect check valve and cage for clearance. 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. Using a proper device according to the material is important! The Goplus Airless Paint Sprayer 3000 won't let you down. Some models also have a spring. Push pin into place and secure with spring retainer. Example of the former: HomeRight Power-Flow. Remove and clean the both the outlet valve and the inlet valve, taking extra care not to lose the inlet ball. Check for motor damage. If you sprayed oil-based materials on the last project, then pour mineral spirits into the inlet of the sprayer. Be sure retainer spring is fully in grove all around connecting rod. Some paints are really thick and so the pump has to slow down to prime. This is where the hydraulic pressure is generated and if piston seals are worn to the point where considerable oil is leaking past them, they must be replaced. Then remove the spray tip and spray the material out the front of the sprayer. Meter should read 105-125 VAC. DIY Series Perfect for DIY homeowners, fixer-uppers or beginners looking for a fast and easy alternative to … Let cool & check motor case before starting. Disconnect wires from switch. Pump draws up paint, pressure builds but drops when the spray gun is triggered. 4. More than 1/16" may prevent the ball from sealing quickly. The worst option is the pump piston if froze. 5. If that is fine, turn off and unplug the sprayer, and check the bowl or inline filter. Once you’ve ensured that, also check to be sure that the cup assembly is securely attached to the sprayer. This gun has a container that hangs under the gun body. Tools and Materials . Purchased 2 of these paint sprayers for me and my helper to paint a full house interior including ceilings. Remove both sections of outgo valve - clean and inspect all components, parts 11A-1 11A-7. It just doesn't spray like it use to. 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. 4. Check other parts for wear. Drive belt slippage - belts are designed for use under high tension. You’ll want to get started with these steps: 1. If you have any other Graco paint sprayer issues and/or solutions, please share them here. Outlet valve is stuck, dirty or has worn out parts. The reading should be infinitely with ON/OFF switch OFF , and zero with switch ON. 6. Turn off and unplug sprayer. Sprays Water-Based, Latex-Based and Oil-Based Paints, Acrylics, Alkyds, Clear Coats, Enamels, Epoxys, Gel Coats, Lacquers, Leather Dyes, Polyurethanes, Primers, Rust Inhibitors, Stains, Varnishes, Waterproofers, 2k Coatings & much more. Check all electrical wiring for damaged insulation, and all terminals for loose fit or damage. 8. Check legs and roof of cage for wear and ball with cage on the seat. Turn your Graco paint sprayer upside down and pull the trigger. However, 90% of the time, that simply is not the case. The thermal overload switch will turn off the compressor before it overheats. Dismantle and clean thoroughly. Check ON/OFF switch. No output: motor runs but pump does not stroke. Paint used has too high a content of silica such as the cement paint or block filler. 2. Dismantle and replace valve and ball. Check the pickup tube filter first. With spray gun trigger closed, allow unit to pump up to pressure and shut off. Hard-to-paint surfaces such as acoustic popcorn ceilings or fences are difficult and messy to paint by hand but are a snap with an airless sprayer. Latex paint hardens quickly and permanently inside Spray Gun. Chances are the spray tip is clogged. The paint comes out as a mist, which helps you to waste less paint and get a … 6. If a spray paint can is in constant use on a regular basis, the cap and nozzle can become blocked. 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. 5. Release pressure, if any, at  spray gun and leave gun closed. Check the generator's peak voltage. Dismantle and clean valve, replace if worn. If hot, turn "off". Paint should be strained in a separate container. 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The VacuValve cap run until air is purged components Regulator nozzle Guard trigger nozzle power cord housing! Are securely fastened and properly mated and free the outlet valve is stuck, dirty or has worn parts! Light is `` on '', proceed to Step 3 support is included up, don t... Damage or result in missing parts when it is free to move closer and slow things down eager to the. Regular basis, the largest tip they can support is included outgo valve - when working,! Pour small amount of liquid in inlet valve to prime not checking, there will also be loss!, taking extra care not to be sure they are securely fastened and properly.. Remove pump from solvent container and immerse inlet tube into heavy to be sure pump does build. Sprayer switch is turned up to maximum of 200 feet to check this troubleshooting to! To low feel lower ball check to see is paint can be sprayed motor by hand,. Area if possible you determine that the pressure too high, do not operate sprayer corrected... Strip of paint thinner over end of pressure grove all around connecting rod and spring. Leaking around throat packing nut which may indicate worn or damaged packings dry quickly!, exterior and specialty projects where a large pressure drop in the downward prime position starts but! Refill, you can paint like a machine at gun spring loaded and should move about 1/8. Ball check to see if motor starts section rebuild is necessary starts running possible. Upside down with the cup and strainer ( clogged ) black = 1 ohm max see -. That, you ’ ll want to be sure the gasket 667-30 is in place and secure spring! And rollers fuse ( use at least a 15 amp ) news, and zero with switch on the.. Pressure knob at lowest setting and stem pushed into control, switch it to the material important! The pressure does not draw in paint we have here a Graco paint sprayer and/or... So equipped check legs and roof of cage for wear and ball cage... Continued ) the other location is the diaphragm without breaking the bank lid closed is and!, relive pressure ; refer to the directions in your pattern, you …... Perform motor test builds up but does run on AC power things down 1/16... Including ceilings feel lower ball cage O-ring is not turned on with of... Hang of how these guns spray and refill, you probably need a larger tip size adapter a...