Texture Sprayer Trouble Shooting Guide

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Problem	Cause	Solution
Sprayer will not run	Power switch not on	Turn switch on.
	No power at wall outlet	Check outlet by plugging in another appliance. If appliance does not work, try another outlet.
	Breaker tripped	Reset breaker
Pump won’t pump material	Mix too thick	Add water to thin material. Use Material Thickness Gauge.
	Selector switch in wrong position	Move selector switch to correct position for application.
	Loose fittings	Check and retighten all fittings.
	Pump hose worn out	Replace hose. Recommended hose replacement - once every year.
	Plugged gun	Relieve Pressure,
	Pump cold	Move pump to warm room and allow it to warm up or run hot water through sprayer
	Air lock	Open air valve on gun.
Material runs out of bottom of sprayer	Pump hose worn out	Replace hose.
Material runs out of bottom of sprayer	Loose fittings	Check and retighten all fittings.
No air from compressor	Gun air valve closed	Open gun air valve.
	Low voltage	Check extension cord length and gauge. Replace if different than recommended. Refer to Grounding and Electrical Requirements
	Gun needle plugged	Clean needle and retry
	Worn compressor	Replace compressor. Contact a qualified Graco Service Center.
	Damaged hose	Replace hose.
	Lines not connected	Check all quick disconnect connections to gun and hoses.
Speed of application slow or slower	Material too thick	Thin material.
	Thin material. Nozzle too small	Change nozzles to a larger size.
	Pump hose worn	Replace hose.
	Plugged or dirty gun	Relieve Pressure, Clean gun.
	Gun adjustment set too low	Increase flow adjustment with flow adjustment nut.
	Extension cord too long or wrong gauge	Use a different extension cord. Refer to Grounding and Electric Requirements
	Too much air being used.	Partially close gun air valve to reduce air flow.
Intermittent flow/sputtering	Hopper connection not tight	Check gasket. Tighten connection
Intermittent flow/sputtering	Debris in system	Clean system.
Quick disconnect does not stay connected.	Dirty or corroded fitting	Clean thoroughly. Soak in oil. Apply a few drops of light oil.
	Tip is partially clogged.	Clear Tip
	Fluid supply is low or empty.	Refill fluid supply. Prime pump. Check fluid supply often to prevent running pump dry.
Gun will not shut off	Worn nozzle or needle.	Relieve Pressure. Replace worn parts
Gun will not shut off	Debris in needle passage	Relieve Pressure, clean
Pump output is low	Intake valve ball and piston ball are not seating properly	Remove intake valve and clean. Check balls and seats for nicks; replace if necessary. Strain paint before using to remove particles that could clog pump
	Fluid filter, tip filter, or tip is clogged or dirty.	Clean filter
	Prime valve leaking	Relieve pressure. Repair prime valve.
	Verify pump does not continue to stroke when gun trigger is released.	Service pump
	Leaking around throat packing nut which may indicate worn or damaged packings.	Replace packings; see pump manual. Also check piston valve seat for hardened paint or nicks and replace if necessary. Tighten packing nut/wet-cup.
	Low stall pressure	Turn pressure knob fully clockwise. Make sure pressure control knob is properly installed to allow full clockwise position. If problem persists, replace pressure transducer.
	Large pressure drop in hose with heavy materials	Use larger diameter hose and/or reduce overall length of hose.
	Small irregularities of new clutch surfaces grind together and cause noise	Clutch surfaces need to wear into each other. Noise will dissipate after a day of run time.
Pump stops pumping	Stalled pump	Shut down system. Relieve pressure,
Pulsing or surging material	Triggering too fast	Slowly squeeze trigger to fully open position while moving gun quickly in a circular motion.
Pattern too fine or too much overspray	Material too thin	Thicken material. Material must be mixed thoroughly to a consistency that immediately folds back in as you draw your finger through the surface of the material.
	Air pressure at gun too high	Decrease air to gun at gun fitting and/or regulator.
	Fluid delivery too low	Increase nozzle size. Increase air pressure to pump, or decrease air to gun at gun fitting and/or regulator Turn fluid knob out on gun.
Pattern too coarse	Material too thick	Thin material. Material must be mixed thoroughly to a consistency that immediately folds back in as you draw your finger through the surface of the material.
	Air pressure at gun too low	Increase air to gun at gun fitting and/or regulator.
	Fluid delivery too high	Decrease nozzle size. Decrease air pressure to pump, or increase air to gun at gun fitting and/or regulator. Turn fluid knob in on gun.
Soft start won’t work/pump, always loaded	Sensor is bad	Change sensor
	Air leak due to bad seal keeps valve open	Replace seal
	Normal soft start system delay	Release trigger for 10-15 seconds. Retry.
	Switch is not operating properly	Replace switch
	Damaged solenoid valve on cylinder	Check gun supply, hose and sprayer for leaks
	Air leak	Check gun supply, hose and sprayer for leaks
Needle adjustment won’t adjust	Dirty threads	Clean threads
	Nozzle not on gun	Put nozzle on gun
	Flow nut set to maximum adjustment	Turn flow nut adjustment the other way

Texture Sprayer Trouble Shooting Guide

Problem

Cause

Solution