Graco Magnum LTS 15 Repair Manual

Basic Troubleshooting
332695C 17
Pump cycles but does not build up
pressure.
Pump is not primed. Prime pump.
Inlet screen is clogged. Clean debris off inlet screen and
make sure suction tube is immersed
in fluid.
Suction tube is not immersed in
paint.
Make sure suction tube is immersed
in paint.
Suction tube is leaking. Tighten suction tube connection.
Inspect for cracks or vacuum leaks. If
cracked or damaged, replace suction
tube.
Prime/Spray Valve is worn or
obstructed with debris.
Take sprayer to Graco/M
AGNUM
authorized service center.
Pump check ball is stuck. Read Pump does not prime section
in Basic Troubleshooting, page 15.
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, see Operation
manual.
InstaClean™ fluid filter is clogged. Clean or replace InstaClean™ fluid
filter, see Operation manual.
Spray gun fluid filter is clogged. Clean or replace gun fluid filter, see
Operation manual.
Spray tip is too large or worn. Replace tip.
Problem Cause Solution

Graco Magnum LTS 15 Specifications

General

Type	Airless Paint Sprayer
Maximum Tip Size	0.015 inches
Maximum Pressure	3000 psi
Power Source	Electric
Voltage	120V
Maximum Hose Length	75 feet
Flow Rate	0.27 GPM
Application	Interior and Exterior
Spray Tip	515