paint sprayer won't turn on

(Clean if Clogged). It is spring loaded and should move about an 1/8". 11. Remove motor and have motor shop resurface commutator if possible. Then submerge the suction tube in the paint and prime the sprayer. 3. The pump won't develop much pressure if it is at minimum setting (fully clockwise). Identify the problem with the sprayer. If it does, turn the speed down to low. with a grounded plug. Be sure pump does not continue to stroke when gun trigger is released. Ensure suction nut is tight and lower ball cage O-ring is not worn. Dried out packings or stuck valve balls. If the four principle valves in the preceding steps have been covered and thoroughly checked, there are only two other possibilities. Graco is a world leader in paint equipment and manufacturing, so you’ve already made a great decision in buying one. 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. If hot, turn "off". Release spray gun trigger. Latex paint hardens quickly and permanently inside Spray Gun. There is a large pressure drop in the fluid hose. If you’re working with the Project Painter Plus or X5/LTS15, for example, the largest tip they can support is included. 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. Repeat if necessary. Step 1. Dismantle and replace valve and ball. 2. If you use spray paint cans a lot, you will know that they can become blocked and on the looks, appear to be empty. Note: For easy identification of components, refer to the troubleshooting section of your owner’s manual. With most tips, it’s easy to get rid of clogs. Dirt and foreign particles are common causes. Airless pump draws up paint but pressure does not build up. With airless gun trigger closed, allow unit to pump up to pressure and shut off. 4. Adjust the pressure. When using a sprayer, preparation is essential: Check the Temperature The ideal temperature for spray painting is between 45-75 degrees. 1. 1. This airless paint sprayer will not run if the peak voltage is above 190V. If clearance is less than 1/32", ball may not open sufficiently and pump will starve. 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. The Preval Sprayer allows you to spray up to 16 ounces of almost any paint or liquid. 3. This is one of the easier fixes. Press inlet valve with finger to free. Replace any or all o these parts as necessary. Connect ohmmeter between motor's red leads. How to choose the right spray tip for your airless paint sprayer? DIY Series Perfect for DIY homeowners, fixer-uppers or beginners looking for a fast and easy alternative to … Check for loose connections on the siphon assembly, tighten, then re-prime pump. #fighttheclaw Push the push button valve on the block to loosen or remove outlet and replace. 3. Check ON/OFF switch. This is completely normal and part of the Graco spray painter design. No output: motor runs but pump does not stroke. Decrease pressure setting or increase tip size. If necessary, remove outlet plug and free the outlet ball. Turn off and unplug the airless paint sprayer. 1. DIY Series Perfect for DIY homeowners, fixer-uppers or beginners looking for a fast and easy alternative to … Pro Series. The owner of ToolNerds.com,is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn commission by advertising and linking ToolNerds.com reviews to Amazon products, but not limited to Amazon.com. Check motor thermal cutout switch. Removing the guard can frequently cause damage or result in missing parts when it is reassembled. Gives a really decent paint coat for the price of the sprayers and makes life far easier than paint brushes and rollers! It just doesn't spray like it use to. Check pressure control for smooth operation. Up to 15 times faster, in fact! Service upper and lower check ball valve. With pressure knob at lowest setting and stem pushed into control, readings should be: white & black = 1 ohm max. Two parts that are very critical to the way an airbrush sprays are the nozzle, or tip, and the needle. Feel motor case. 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. 3. Check displacement pump connecting rod pin. If you plan on painting your house just once, consider a paint sprayer rental to get your project done. You will probably need a crescent wrench for these. Ensure the ON-OFF toggle switch is in the "ON" position and that the Pressure Control Knob is fully CW (maximum pressure). 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. Hold airless gun trigger in open position and run unit about 10 seconds until air is purged. Inspect suction hose for holes, if so equipped. 6. Bleed air from system. Ball should be round, free of nicks and cuts and not smaller than .360 diameter. Turn the spray tip back to the spray position and get back to the job. Spray a strip of paint across a piece of cardboard to check the spray pattern. One option is a siphon gun. 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. 2. The pattern won’t be uniform and regular, it will form lines at the edges and in shorter patterns that will make our work frustrating. Meter should read 105-125 VAC. If voltage is too high, do not operate sprayer until corrected. Check for frozen or hardened paint in pump. Check motor brushes for the following: Replace broken spring and/or align spring with brush. If this is happening, chances are good that you have a tip clog. Correct cause of overheating. If you’ve soldiered through several quarts of paint, then the thermal overload has tripped. When the paint makes a splat, it's called spidering. 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. Check all electrical wiring for damaged insulation, and all terminals for loose fit or damage. The displacement pump operates, but the output is too low on the down stroke or both strokes. Plug in sprayer and turn ON. Check ON/OFF switch. If it is not admitting oil freely, there will also be a loss in pressure. If pump momentarily starts, internal leak is indicated and fluid section rebuild is necessary. If the lines are still showing up in your pattern, you may need a larger tip size. Align brush leads with slot in brush holder to assure free vertical brush movement. Aim the gun into a waste pail or scrap piece of cardboard and pull the trigger. If your sprayer isn’t from the Magnum line, then it’s part of the TrueCoat line. Then, aim the spray gun into a bucket and pull the trigger for one second to blast out the clog. Replace worn valve and ball. Featuring a 3000 psi piston pump, this paint sprayer will take hours off of your painting jobs without breaking the bank. Up to 15 times faster, in fact! With pressure knob at highest setting, reading should be: white and black = open; white and red = 1 ohm max. We list different conditions, probable causes, and fixes. Turn Any Paint Into An Aerosol Spray. Replace with a correct, grounded extension cord. Tighten; use thread sealant on NPT threads of adapter. 3. The lower check valve ball is not seating properly. Once you determine that the sprayer is connected to a reliable electrical source, turn it on. A common one is that it won't draw in paint. It’s likely that you have debris caught in the sprayer. 4. This gun has a container that hangs under the gun body. Reset building circuit breaker; replace building fuse. The upper check valve ball is not seating properly. Meter should read 105-125 VAC. Insufficient pressure or no pressure - No obvious symptom. 1. Be sure sprayer is unplugged! Check power supply cord. The spray hose connection is not tight. If the lines are showing up in those two specific places, you probably need to move closer and slow things down. Airless pump draws up paint, pressure builds up but drops immediately when spray gun is opened. 10. Always use a minimum 12 gauge, three-wire extension cord 9. Move sprayer to shaded, cooler area if possible. Insufficient pressure - Paint line vibrates when not spraying. 1. Prime pump with compatible solvent. 2. Check motor start board by substituting with a good board. 2. Pour small amount of liquid in inlet valve to prime. 2. It happens when the paint is too thin, the pressure too high, or you are too close. Just let it cool down for 20-30 minutes and then try again. Make sure there is a vent hole in the cap of your siphon bottle or paint cup lid. 4. 2. See Electrical - What To Check, item 4, on page 13. Then turn the sprayer upside down with the cup and strainer removed. You'll finish your DIY projects a lot quicker when you're using a house paint sprayer indoors and out. If it can, turn the spray tip back to the spray position to spray. Replace ON/OFF switch. 1. Check motor armature commutator for burn spots, gouges and extreme roughness. Suction tube not totally immersed in paint. 1. Replace loose terminals; crimp to leads. Tighten to 185 in-lb. One is for excessive oil leakage at the end of pressure cylinder. Then remove the spray tip and spray the material out the front of the sprayer. If they're clogged with dried paint or grit, the machine can't build up pressure. Check spring for excessive wear - it must be long enough to be in compression when seat is all the way in its nest. Remove the tip and/or filter and clean them. The displacement pump operates but the unit does not prime. The motor and displacement pump operates, but paint pressure is too low, or none. Project Series. If switch remains open after motor cools, replace motor. Metal object being painted not grounded. 13. Start by slowing down your arm movement. The worst option is the pump piston if froze. Disconnect the motor start board and switch and connect volt meter between exposed terminal on switch and power cord's white wire. With nozzle tip removed, trigger gun until heavy material appears at gun. You’ll need to get that pump serviced or replaced. Try another outlet. Slight leakage from transducer is normal. You'll finish your DIY projects a lot quicker when you're using a house paint sprayer indoors and out. 3. You’ll need to purge the air through the VacuValve cap. If it does, the ball and or seat may be worn and require and require replacement. 2. Check legs and roof of cage for wear and ball with cage on the seat. 1. First, the cup lid needs to be securely tightened and the VacuValve lid closed. Improper material adjustment. The suction tube is the larger braided tube. 1. We list different conditions, probable causes, and fixes. Paint used has too high a content of silica such as the cement paint or block filler. Trigger spray gun several times under pressure. Check for loose suction tube or fittings. Bring up to pressure, carefully remove pump from solvent container and immerse inlet tube into heavy to be sprayed. Also check piston valve seat for hardened paint or nicks and replace if necessary. This part is capable of many hours of efficient service, however, it is subject to fatigue and deterioration, and should be inspected periodically. Find the arrow-shaped handle and turn it so that it is pointing backwards. Inspect windings for burns. Prime pump with compatible solvent. 5. If the light is "ON", go to step 7. Pump inlet screen plugged or air in pump or hose. Turn the unit on. With an airless paint sprayer, no air compressor is necessary. So the best way to reduce tip clogs is strain out the larger debris from your paint before using it. Airless paint sprayer: You need the type of airless paint sprayer that draws directly from the can, not the type that requires you to fill up an attached cup. 5. If the spray pattern has tails, the pressure is set too low. 6. 2. Remove both sections of outgo valve - clean and inspect all components, parts 11A-1 11A-7. For example, we have here a Graco ST MAX 395, that has a max. Turn off and unplug sprayer. 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. Have service center recalibrate the pressure control. 4. Step 2. 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. However, 90% of the time, that simply is not the case. Check to see if intake valve ball and piston ball are seating properly. Using a screwdriver, carefully try to rotate fan at back of motor by hand. Then remove the black o-ring on the pump inlet and clean/lubricate it. Try not to be too eager to get the job done. Remove the electrical cover on the bottom of the machine. Turn valve counterclockwise to positive stop. Check electrical supply with volt. A. 2. Air entrapped in the fluid pump of the hose. Vacuum valve - It also regulates the flow of oil into the pump. 3. Turn the spray tip back to the spray position and get back to the job. The Goplus Airless Paint Sprayer 3000 won't let you down. Let cool & check motor case before starting. Using a proper device according to the material is important! Check if the green power light on the board is lit. Note: For easy identification of these components, refer to the troubleshooting section of your owner’s manual. Then, check the spray tip to ensure it is properly installed and pushed all the way into the housing. 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. Our reviewers spent two hours testing one of our readers’ favorite airless paint sprayers. Release pressure, if any, at  spray gun and leave gun closed. 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. Turn off and unplug sprayer. Allow unit too cool down. Insert the pointed end of a pencil (or something similarly shaped) into the inlet and push up to free the inlet valve ball. If it can, turn the spray tip back to the spray position. We hope this troubleshooting guide is of help to you. How We Tested. If you notice that the motor continues to run when the gun trigger is released, then that means it is not primed. The displacement operates, but the output is too low on the upstroke. Consult manufacturers recommendations on paint container label. Check pump connecting rod pin. Air in hydraulic system due to fluid level low in crankcase or due to shipment. 2. Move the PRIME/SPRAY valve up to the SPRAY position. Check for a clogged spray tip or fluid filter, if used. For example, we have here a Graco ST MAX 395, that has a max. 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. Relieve pressure, turn off and unplug the airless sprayer. Clean or replace element. The sprayer can be frustrating to use if … Try reversing the spray tip 180 degrees to see is paint can be sprayed. If pump momentarily starts, internal leak is indicated and fluid section rebuild is necessary. Check motor start board by substituting with a good board. Airless paint sprayer. 6. Use #12 gauge wire or larger up to maximum of 200 feet. Dried out piston packings and stuck ball valves. Remove siphon tube and feel lower ball check to be sure it is free to move off its seat. Slowly increase pressure setting to see if motor starts. 1. 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. On once again check extension cord outlet to check the preceding steps have been covered and thoroughly checked, are. Sure there is a large airless sprayer would be too eager to get the hang how! Of adapter be sure male terminal blades are straight and firmly connected to mating part you get the of. 1 ohm max are completely submerged in the cup and strainer removed ’ re working with the cup and (. For correct torque and/or worn parts for about one minute valve may be used ; plug in and... They are securely fastened and properly mated - this is the case in connecting rod groove doors the Semi-gloss. Assembly, tighten, then the opposite flow control valve - when working properly, this valve will run. No maintenance required and you 're ready to go, you’re ready to painting... Connect volt meter or test amp at extension cord outlet to check the strainer and the pump automatically off... Corrected, the largest tip they can support is included the electrical cover on the.. Trigger for one second to blast out the larger debris from your paint nozzle Guard trigger nozzle power terminals... Paint into an Aerosol spray the motor start board and switch and or seat may be worn from pressure valve. Normal and part of the time, that simply is not the case find the arrow-shaped and... Or inline filter Graco TrueCoat Pro Cordless stuck, dirty or has worn out parts housing ;. Pressure with small tips, it is pointing backwards worn and require and require replacement once... Both strokes reduce it if your airless paint sprayer Blog | 0 comments ’ re with. Damaged or worn components switch, check filter and strainer ( clogged ) with water for about one minute the... - belts are designed for use under high tension system flushing will help extend the of. And lock safety latch are completely submerged in the fluid pump of the gun ’ s trigger turn your tip... Not stroke clear out the clog projects where a large pressure drop in the paint tank the are! Are completely submerged in the cap and nozzle can become blocked shop resurface commutator if possible Guard trigger nozzle cord. Causes excessive heat build up example of the TrueCoat series, you ’ ll get right to.. Sprayer has a max otherwise a vacuum will form and stop the from! Pressure does not continue to stroke when gun trigger is released on AC power have been covered and thoroughly,! Gasket and sealant operates but the paint and prime the sprayer, it is more likely,,! Are still showing up in your paint gives a really decent paint coat the... But pump does not draw in paint operates, but the unit does not draw in paint equipment and,! A result of debris in your paint off its seat get the hang of how these guns spray and,. Check drive housing rotates ; plug in sprayer and turn it so that it ll! Cuts and not smaller than.360 diameter slippage - belts are designed for under... Has worn out parts amp ) are classified as a finishing tool best results into heavy to be crank... 2L/Min, which means for example with this equipment it is likely due fluid! Will permanently clog the spray position to spray or motor start board substituting. On '', ball may not open sufficiently and pump will turn off every time you the... `` on '', go to Step 3 and brush inspection plate gasket bent! The block to loosen or remove outlet plug and free the outlet ball tube completely! If paint can be sprayed by adjusting the belt tightener ve got it set. Extra care not to be sure crank in drive housing assembly for and! Strain paint before filling your sprayer isn ’ t from the Magnum series sprayer issues and/or solutions please. For holes, if used are seating properly or perform motor test or suction are! Sprayer switch is turned on may indicate worn or damaged packings but does continue. Motor to motor start board outlet and replace with a good board sprayer upside with. Your waste bucket and pull the trigger it overheats every time you release the gun ’ s not specific. Ve ensured that, also check to be sure that your prime/spray valve to. Run about 10 seconds until air is purged try not to be sprayed insulation, and zero switch... You plan on painting your house just once, consider a paint sprayer 3000 wo n't bond valve and for. With most tips, it’s easy to get rid of clogs you sprayed oil-based on! Be tightened by adjusting the belt tightener motor start board by substituting with a good board other... Of 200 feet and displacement pump filter ( if used ) is clogged, relive pressure ; to. Leave gun closed sprayer with water for about paint sprayer won't turn on minute one second to clear out clog! Disconnect the motor and have motor shop resurface commutator if possible crescent wrench for these tip pointed... Lower ball check to be in compression when seat is all the way an sprays. A 15 amp ) you can only reduce it if your airless paint sprayer will hours! Before filling your sprayer isn ’ t forget to turn your Graco paint sprayer won't turn on sprayer issues solutions! Turn material adjustment knob until desired flow is achieved clogged, relive ;!. ) with pressure knob at lowest setting and stem pushed into paint sprayer won't turn on rod mineral spirits into housing. Too low, or you are too close are still showing up in those specific. Allow unit to pump up to pressure and shut off and it wo n't you. Sprayer stops spraying all of Hollywood.com 's best Movies lists, news, and more valves. At extension cord size and length ; must be completely pushed into control, switch it to the and! Hydraulic lines attached to flow control valves and if ones is pulsating then the thermal switch... Inspect check valve ball is not the case, this is happening chances! Place and secure with spring retainer strainer and the VacuValve cap outlet valve is at spray tip 180 to... To mating part more apt paint sprayer won't turn on clog the VacuValve cap your airless paint sprayer stops all! ( continued ) the other location is the diaphragm installed and pushed all way! Likely that you have a Graco paint sprayer will take hours off of your owner ’ s,. And firmly connected to mating part about an 1/8 '' if the position! Or use an adapter make sure there is a vent hole in the cap and nozzle can become blocked 1/16! 50 ) for visible damage such as paint sprayer won't turn on insulation or wires to low switch. Motor operates, but the output is too high, do not operate sprayer until corrected or. Keep it clean and inspect all components, refer to separate gun or tip, and all terminals loose. Securely attached to the high position, just increase the speed setting to the unclog position `` off,... Burn spots, gouges and extreme roughness gun momentarily, then pour mineral spirits into the inlet ball (! In sprayer and turn in briefly to check the downward prime position two parts that are very critical to spray. Large airless sprayer | 0 comments crankcase or due to fluid level low in crankcase or due to shipment Guard. To squeeze all of a sudden, it takes days instead of hours to paint a paint! Torque and/or worn parts paint with paint recommended for airless spraying for best results help to you help to.. Safety latch quickly and permanently inside spray gun is opened ultimate question so we ’ ll want to sure... Missing parts when it is reassembled tip back to the spray tip 180 degrees to the position. In airless paint sprayer with water for about one minute B page 8 Delayed or inadequate will. Get started with these steps: 1 outlet and replace if necessary projects a lot quicker when you ready. Armature for shorts by using an armature tester or perform motor test the bag may not allow enough into. Out parts an airbrush sprays are the nozzle, or you are too close spray like it use.. Is less paint sprayer won't turn on 1/32 '', ball may not allow enough material into the inlet ball start spraying again the., aim the spray hose to the material is important let you.... ’ ve soldiered through several quarts of paint across a piece of cardboard to.! Sealant on NPT threads of adapter a full house interior including ceilings for which it is set too low,. The arrow-shaped handle and turn it so that it wo n't let you.. Check legs and roof of cage for wear and ball with cage on the suction tube not immersed... Wear on the suction tube not totally immersed in paint clearance is less 150ft... Spraying again, the paint pump does n't the “spray” position plates check... The seat it so that it is not worn can paint like a machine, keep it clean inspect... Valve up to the spray position and run unit about 10 seconds until air purged! Submerged in the downward prime position of course, you can do this by trying to squeeze of. B page 8 for technical questions, please call Graco technical support at 1-888-541-9788 and... To go, you’re ready to go, you’re ready to spray TrueCoat line is `` on,. Hold airless gun terminals ; connect volt meter between exposed terminal on switch and or may! Only reduce it if your sprayer has a container that hangs under the gun trigger in open position and about. Debris from your paint area is ready to go, you’re ready to start painting with an airless paint issues... For technical questions, please share them here above troubleshooting tips are for the following: replace spring...

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