Graco A Series User Manual

Troubleshooting
26 3A1782D
Pump cycles, but paint only dribbles
or spurts when spray gun is trig-
gered.
Pressure is set too low. Slowly turn Pressure Control Knob
clockwise to increase pressure set-
ting which will turn motor on to build
pressure.
Spray tip is clogged. Unclog spray tip, page 16.
Spray gun fluid filter is clogged. Clean or replace gun fluid filter, page
20.
Spray tip is too large or worn. Replace tip.
Pressure is set at maximum but can-
not achieve a good spray pattern.
Reversible spray tip is in UNCLOG
position.
Rotate arrow-shaped handle on
spray tip so it points forward in
SPRAY position, page 16.
Spray tip is too large for sprayer. Select smaller spray tip.
Spray tip is worn beyond capability of
sprayer.
Replace spray tip.
Extension cord is too long or not
heavy enough gauge.
Replace extension cord. Grounding
and Electrical Requirements, page
10.
Spray gun fluid filter is clogged. Clean or replace spray gun fluid filter,
page 20.
Inlet screen is clogged. Clean debris off inlet screen.
Pump valves are worn, or debris is
clogging valve.
Check for worn pump valves.
a. Prime sprayer with paint
b. Trigger gun momentarily.
When trigger is released,
pump should cycle
momentarily and stop. If
pump continues to cycle,
pump valves may be worn.
c. Remove valves and check
for debris.
Material is too thick. Thin material.
Hose is too long (if extra section is
added).
Remove section of hose.
Spray gun stopped spraying. Suction tube is leaking. Tighten suction tube connection.
Inspect for cracks or vacuum leaks.
Spray tip is clogged. Unclog spray tip, page 16.
When paint is sprayed, it runs down
the wall or sags.
Coat is going on too thick. Move gun faster.
Choose a tip with smaller hole size.
Choose tip with wider fan.
Make sure gun is far enough from
surface.
Problem Cause Solution

Graco A Series Specifications

General

Brand	Graco
Model	A Series
Category	Water Pump
Language	English