Graco MAGNUM 309225W Operation Manual page 23

Problem
Pump does not prime.
Pump does not prime.
Spray gun stopped spraying.
Pump cycles but does not build up
pressure.
Pump cycles but does not build up
pressure.
Pump cycles but does not build up
pressure.
309225W
Cause
Spray-Prime/Drain Valve (J) is in
SPRAY position.
Inlet screen (L) is clogged or suction
tube (G) is not immersed.
Inlet valve check ball is stuck.
Outlet valve check ball is stuck.
Suction tube is leaking.
Spray-Prime/Drain Valve is plugged.
Spray tip is clogged.
Pump is not primed.
Inlet screen (L) is clogged or suction
tube (G) is not immersed.
Paint pail is empty.
Suction tube is leaking.
Pump check valves are dirty or dam-
aged. (Usually only one valve).
Spray-Prime/Drain Valve (J) is worn
or obstructed with debris.
Pump check ball is stuck.
Troubleshooting
Solution
Turn Spray-Prime/Drain Valve to
PRIME/DRAIN position (pointing
down).
Clean debris off inlet screen and
make sure suction tube is at bottom
of paint pail.
Remove suction tube and place a
pencil into the inlet section to dis-
lodge the ball, allowing pump to
prime properly. OR Power Flush
sprayer, page 17.
dx Sprayer: Remove hose from
sprayer. Unscrew outlet valve to
remove assembly with a screwdriver.
Screw the valve back on the pump.
XR Sprayers: Use a screw driver to
™
open the Easy-Access
Unscrew outlet valve with a 3/4 in.
wrench. Remove and clean assem-
bly.
Tighten suction tube connection (K).
Inspect for cracks or vacuum leaks.
Clean/replace drain tube as neces-
sary. Take sprayer to Graco/mag-
num authorized service center if
valve is plugged.
Unclog spray tip, page 12.
Prime pump.
Clean debris off inlet screen and
make sure suction tube is at bottom
of paint pail.
Refill paint pail. Reprime sprayer.
Tighten suction tube connection (K).
Inspect for cracks or vacuum leaks. If
cracked or damaged, replace suction
tube.
Clean or replace check valves. Read
Pump Check Valves, page 11.
Take sprayer to Graco/magnum
authorized service center.
Read Pump does not prime section
in Troubleshooting, page 23
door.
23