Troubleshooting
30 312001G
When paint is sprayed, coverage
is inadequate.
Coat is going on too thin. Move gun slower.
Choose tip with larger hole size.
Choose tip with narrower fan.
Make sure gun is close enough to
surface.
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 9.
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. Replace pump packings.
Motor is hot and runs intermit-
tently. Motor automatically shuts
off due to excessive heat. Dam-
age can occur if cause is not cor-
rected.
Thermal Overload, page 6.
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 6.
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
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