Graco MAGNUM LTS 17 Repair Manual

Basic Troubleshooting
18 332695C
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, see Operation
manual.
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. See
Grounding and Electrical Require-
ments, page 12.
Spray gun fluid filter is clogged. Clean or replace spray gun fluid filter,
see Operation manual.
InstaClean™ fluid filter is clogged. Clean or replace InstaClean™ fluid
filter, see Operation manual.
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, see Operation
manual.
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.
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.
Problem Cause Solution

Graco MAGNUM LTS 17 Specifications

General

Type	Airless Paint Sprayer
Max Tip Size	0.017 inches
Max Pressure	3000 PSI
Hose Length	50 feet
Weight	20 lbs
Power Source	Electric
Motor Power	5/8 HP
Spray Tip Size	0.017 inches