Troubleshooting
22 3A3265B
Speed of application slow or
slower
Material too thick Thin material.
Nozzle too small Change nozzles to a larger
size. See Recommended Noz-
zle Selection Chart, page 15.
Too much air being used.
Partially close gun air
control
valve to reduce air flow.
Pump hose worn Replace hose.
Plugged or dirty gun Perform Pressure Relief Pro-
cedure, page 8. Clean gun.
Kinked hose Unkink hose.
Gun adjustment set too low Increase flow adjustment with
flow adjustment nut.
Too many items on same cir-
cuit
Unplug other items from circuit.
Extension cord too long or
wrong gauge
Use a different extension cord.
Refer to Grounding and Elec-
tric Requirements, page 8.
Intermittent flow/sputtering Hopper connection not tight Check gasket. TIghten con-
nection.
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.
Gun will not shut off Worn nozzle or needle Perform Pressure Relief Pro-
cedure, page 8. Replace worn
parts.
Debris in needle passage Perform Pressure Relief Pro-
cedure, page 8. Clean.
Fluid leaking at Flow Adjust-
ment Nut
Damaged seal Perform Pressure Relief Pro-
cedure, page 8. Replace seal.
Needle adjustment won’t
adjust
Dirty threads Clean threads.
Nozzle not on gun Put nozzle on gun.
Power switch is on and sprayer
is plugged in, but motor does
not run, and pump does not
cycle.
Air
control valve on gun is
closed or not open enough
Open air control valve.
Motor or control is damaged Take sprayer to Graco
authorized service center.
Electric outlet is not providing
power.
Try a different outlet or plug in
something that you know is
working to test outlet.
Reset building circuit breaker
or replace fuse.
Extension cord is damaged. Replace extension cord. See
Grounding, page 8.
Sprayer electric cord is
damaged.
Check for broken insulation or
wires. Replace electric cord if
damaged.
Problem Cause Solution
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