Graco A Series User Manual

Troubleshooting
3A1782D 25
Pump does not prime. Prime/Spray Valve is in SPRAY posi-
tion.
Move Prime/Spray Valve to PRIME
position.
Inlet screen is clogged or suction
tube is not immersed in fluid.
Clean debris off inlet screen and
make sure suction tube is immersed
in fluid.
Pump was not primed with flushing
fluid.
Remove suction tube from paint.
Prime pump with water or sol-
vent-based flushing fluid, page 12.
Inlet valve check ball is stuck. Remove suction tube and place a
pencil into the inlet section to dis-
lodge the ball, or press pump priming
button.
Inlet valve check ball or seat is dirty Remove inlet fitting. Clean or replace
ball and seat.
Outlet valve check ball is stuck. Remove outlet fitting and clean outlet
check ball.
Suction tube is leaking. Tighten suction tube connection.
Inspect for cracks or vacuum leaks.
Pump does not prime with fluid. Remove suction tube from paint.
Prime pump with water or sol-
vent-based flushing fluid.
Fluids are viscous or sticky. Some fluids may prime faster if the
Power Switch is momentarily turned
off so the pump can slow and stop.
Repeat several times if necessary.
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 Troubleshooting, page 25
Problem Cause Solution

Graco A Series Specifications

General

Brand	Graco
Model	A Series
Category	Water Pump
Language	English