Graco Pro 270GS, Операция

Страница: 23 / 28

Troubleshooting
3A2818A 23
Problem Cause Solution
Pump does not prime. Prime/Spray Valve is in SPRAY posi-
tion. Turn Prime/Spray Valve to PRIME
position (pointing down).
Inlet screen is clogged or suction
tube is not immersed. 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
solvent-based flushing fluid, page 10.
Inlet valve check ball is stuck. Remove suction tube and place a
pencil into the inlet section to dis-
lodge the ball, allowing pump to
prime properly.
Inlet valve check ball or seat is dirty Remove inlet fitting. Clean or replace
ball and seat.
Outlet valve check ball is stuck. Take sprayer to Graco authorized
service center.
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. Thin paint per manufacturers guide-
lines.
Engine speed is too high Decrease throttle setting before prim-
ing
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, allowing air to
enter. 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 authorized
service center.
Pump check ball is stuck. Read Pump does not prime section
in Troubleshooting, page 23.