Magnum ProX19 - 17H210

Is it priming?

Have you already been spraying today?

Follow these steps:

• Make sure the suction tube (the larger, braided tube) and the strainer are completely submerged in the paint.
• Some paints are very thick and require the pump to slow down to prime. Turn the on/off switch ON and then OFF until the pump is about to stops and then turn the sprayer ON and then OFF again. You may need to do this a few times until paint works its way into the pump and out the drain tube (smaller clear tube).
• Remove the suction tube (larger, braided tube). Insert the pointed end of a pencil into the inlet and push up to free the inlet valve ball.
• Remove and clean the outlet valve. (See component identification and troubleshooting in your owner’s manual.)
• Remove and clean the inlet valve. (See component identification and troubleshooting in your owner’s manual.) Be sure not to lose the inlet ball (some models have a spring as well).
• Remove the strainer and connect the Power Flush adapter and a garden hose to the suction tube. Following the directions in your owner’s manual, flush the sprayer with water for one minute. Reinstall the strainer on the suction tube, submerge the suction tube in the paint and prime the sprayer.

Make sure the unit is plugged into a working outlet. If it is, turn the sprayer on and then turn the sprayer’s pressure control knob clockwise until the motor starts running.

When the gun trigger is released, the motor and pump will automatically turn off. Once you pull the gun trigger and start spraying, the motor and pump will turn on again. This is normal operation and eliminates constant motor noise and reduces wear for longer life.

If the motor continues to run when the gun trigger is released, it is not primed.

Make sure the Prime/Spray Valve is pointed forward in the Spray position

The spray tip is likely clogged. Turn the spray tip 180 degrees to the unclog position, aim the spray gun into a bucket and pull the trigger for one second to clear the clog. Turn the spray tip back to the spray position and resume spraying.

The best way to reduce tip clogs is to strain you paint of the larger debris.

Make sure the pressure control is turned up to a higher spray pressure. Try moving closer to the surface. If you continue to see lines in your pattern, you may need a larger tip size if you sprayer can support it (the largest tip that the Project Painter Plus and X5/LTS15 can support is the tip that is included). Otherwise, add a small amount of water or solvent, depending upon your material. Be sure to work the water or solvent into the paint that is in your paint hose by reversing the tip and spraying the paint back into the paint bucket until the thinner material is worked into the paint hose. Don’t forget to turn your spray tip back to the spray position.

You most likely have a tip plug. Turn the spray tip 180 degrees to the unclog position, aim the spray gun into a bucket and pull the trigger for one second to clear the clog. Turn the spray tip back to the spray position and resume spraying.

The pump needs to be serviced or replaced.

The spray hose connection is not tight. Use a wrench to tighten the spray hose to the sprayer and to the gun.

Material is going on too thick.

Move gun faster.
Choose a spray tip with smaller hole size.
Choose spray tip with wider fan.
Make sure gun is far enough from surface.

Material is going on too thin.

Move gun slower.
Choose spray tip with larger hole size.
Choose spray tip with narrower fan.
Make sure gun is close enough to surface.

Pressure control switch is worn and causing excessive pressure variation.

Take sprayer to Graco/MAGNUM authorized service center.

Spray gun trigger lock is engaged.

Rotate trigger lock to disengage trigger lock. See page 10.

Pressure control switch is worn.

Take sprayer to Graco/MAGNUM authorized service center.

Sprayer is over pressurizing.

Take sprayer to Graco/MAGNUM authorized service center.

Pump packings are worn.

Replace pump packings with new ProXChange module. See page 27.