Graco 16W119, Операция

Страница: 28 / 32

Troubleshooting
28 332643B
Pump cycles, but paint only dribbles
or spurts when spray gun is triggered. Pressure is set too low. Slowly turn Pressure Control Knob
clockwise to increase pressure setting
which will turn motor on to build pres-
sure.
Spray tip is clogged. Unclog spray tip, page 16.
Spray gun fluid filter is clogged. Clean or replace gun fluid filter, page 16.
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 22.
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 sur-
face.
Problem Cause Solution