Basic Troubleshooting
16
313036N
Pressure is set at maximum but
cannot achieve a good spray pattern.
Spray tip is clogged.
Unclog spray tip, see Operation
manual 313034.
Reversible spray tip is in UNCLOG
position.
Rotate arrow-shaped handle on
spray tip so it points forward on gun.
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
Requirements
, page 10.
Spray gun fluid filter is clogged.
Clean or replace spray gun fluid filter,
see Operation manual 313034.
InstaClean fluid filter is clogged.
(ProLTS 17 and ProLTS 19 Only)
Clean or replace InstaClean fluid
filter, see Operation manual 313034.
Inlet screen is clogged.
Clean debris off inlet screen.
Pump valves are worn.
Check for worn pump valves.
a. Prime sprayer with paint
b. Trigger gun momentarily.
When trigger is released,
pump should cycle momen-
tarily and stop. If pump con-
tinues to cycle, pump valves
may be worn.
Material is too thick.
Thin material.
Hose is too long (if extra section is
added).
Remove extra section of hose.
Spray gun stopped spraying. Pump
is not cycling.
Spray tip is clogged.
Unclog spray tip, see Operation
manual 313034.
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.
Fan pattern varies dramatically while
spraying.
OR
Sprayer does not turn on promptly
when resuming spraying.
Pressure control switch is worn and
causing excessive pressure
variation.
Take sprayer to Graco/M
AGNUM
authorized service center.
Cannot trigger spray gun.
Spray gun trigger lock is locked.
Rotate trigger safety lever to unlock
trigger lock, page 11.
Paint is coming out of pressure
control switch.
Pressure control switch is worn.
Take sprayer to Graco/M
AGNUM
authorized service center.
Problem
Cause
Solution
Summary of Contents for LTS 15
Page 7: ...Notes 313036N 7 Notes...
