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Basic Troubleshooting
312667K 17
Fan pattern varies dramatically while
spraying.
OR
Sprayer does not turn on promptly
when resuming spraying.
Pressure control switch is worn and
causing excessive pressure
variation.
Take sprayer to Graco/M
AGNUM
authorized service center.
Cannot trigger spray gun. Spray gun trigger lock is locked. Rotate trigger safety lever to unlock
trigger lock, page 11.
Paint is coming out of pressure
control switch.
Pressure control switch is worn. Take sprayer to Graco/M
AGNUM
authorized service center.
Prime/Spray valve actuates
automatically relieving pressure
through prime tube.
System is over pressurizing. Take sprayer to Graco/M
AGNUM
authorized service center.
Paint leaks down outside of pump. Pump packings are worn. Take sprayer to Graco/M
AGNUM
authorized service center.
Motor is hot and runs intermittently.
Motor automatically shuts off due to
excessive heat. Damage can occur if
cause is not corrected. See Thermal
Overload, page 10.
Vent holes in enclosure are plugged
or sprayer is covered.
Keep vent holes clear of obstructions
and overspray and keep sprayer
open to air.
Extension cord is too long or not a
heavy enough gauge.
Replace extension cord. Read
Grounding and Electrical
Requirements, page 10.
Unregulated electrical generator
being used has excessive voltage.
Use electrical generator with a proper
voltage regulator. Sprayer requires
120VAC, 60 Hz, 1500-Watt
generator.
Problem Cause Solution