Troubleshooting
40
3X9478B
Problem
Cause
Solution
Sprayed paint runs down wall or
sags.
Going on too thick.
Move gun faster.
Use tip with smaller hole size.
Use tip with wider fan.
Move gun away from surface.
Sprayed paint is not covering.
Going on too thin.
Move gun slower.
Use tip with larger hole size.
Use tip with narrower fan.
Move gun closer to surface.
Pattern is inconsistent or leaving
stripes.
HINT:
Thin paint slightly with
water/solvent.
Pressure set too low.
Turn pressure control knob right to increase pressure.
Spray tip worn beyond capability of
sprayer.
Replace tip.
Motor is hot and runs
intermittently.
This is a Thermal Overload
condition. Motor will automatically
shut off due to excessive heat.
Damage can occur if cause is not
corrected. Startup Hazard After
Thermal Overload, Warnings,
page 7.
Vent holes in shroud are clogged
or sprayer is covered.
Clear vent holes.
Extension cord too long or not
heavy enough gauge.
Replace cord, Grounding and Electrical Requirements,
page 10.
Unregulated electrical generator
being used has excessive voltage.
Use electrical generator with proper voltage regulator.
Sprayer requires 220-240, VAC 50/60 Hz.
Sprayer was operated at high
pressure with small tip, causing
frequent motor starts and
excessive heat build up.
Decrease pressure setting or increase tip size.
Move sprayer to cooler location.
Building circuit breaker opens after
sprayer operates for 5-10 minutes.
OR
Building circuit breaker opens as
soon as sprayer is plugged into
outlet and sprayer is turned on.
Too many appliances plugged in
on same circuit.
Unplug some appliances or use a less busy circuit.
Extension cord is damaged, too
long, or not a heavy enough
gauge.
Plug in something that you know is working to test
extension cord. Replace extension cord. Grounding and
Electrical Requirements, page 10.
Damaged sprayer electrical cord.
Check for broken insulation or wires. Replace damaged
electrical cord.
Damaged motor or control.
Return sprayer to Graco/M
AGNUM
authorized service
center.
Fan pattern varies dramatically
while spraying.
Pressure control switch is worn
and causing excessive pressure
variation.
Return sprayer to Graco/M
AGNUM
authorized service
center.
Sprayer does not turn on promptly
when resuming spraying.
Spray comes out of gun in two
thick streams.
Reversible tip is in UNCLOG
position.
Rotate arrow-shaped handle on tip to SPRAY position.
