Troubleshooting - Graco Magnum B Series Operation

Troubleshooting

Troubleshooting
Check everything in this troubleshooting table before you bring the sprayer to a Graco authorized service center.
Problem
Pump will not prime
HINT:
• Attempt to free check balls by tap-
ping side of inlet valve as sprayer
is stroking.
• Strain paint before spraying. Keep
sand and debris out.
• Thoroughly flush after every paint
job.
• Do not store in water. Use Pump
Armor or mineral spirits.
Power switch is on and sprayer is
plugged in but pump does not cycle.
48
Cause
Prime/Spray valve set at SPRAY.
Inlet screen clogged.
Suction tube is not immersed.
Inlet valve check ball stuck.
Outlet valve check ball stuck.
Suction tube is leaking.
Prime/Spray valve clogged.
Pressure set at minimum.
Electrical outlet is not providing power. •
Damaged extension cord.
Damaged sprayer electrical cord.
Motor or control damaged.
Solution
Turn Prime/Spray valve to PRIME.
Clean debris off inlet screen.
Reposition suction tube in bottom of paint pail.
Remove tube. Insert end of pencil into inlet section to dislodge
ball. OR Power Flush unit, page 33.
1 Remove hose from sprayer.
2 Unscrew outlet valve.
3 Gently nudge ball in outlet assembly with screwdriver.
4 Screw back into pump.
Tighten suction tube connection. Inspect for cracks or vacuum
leaks.
Clean/replace drain tube as necessary. Return sprayer to
Graco/M authorized service center if drain valve is
AGNUM
clogged.
Turn pressure control knob right to increase pressure.
Try a different outlet OR test outlet by plugging something
in that you know is working.
• Reset building circuit breaker or replace fuse.
Replace extension cord. See Grounding and Electrical
Requirements, page 10.
Check for broken insulation or wires. Replace damaged
electrical cord.
Return sprayer to authorized Graco service center.
3X9470C