Troubleshooting - Graco EM 5000 Instructions-Parts List Manual

WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 6.
Check everything in the chart before disassembling the sprayer.
PROBLEM
Motor won't run, or the
motor stops while spraying
Motor labors when starting, and
trips building circuit breaker or fuse
Motor runs, but displacement
pump doesn't operate
Motor runs, but there is little or no
paint output and pump does stroke

Troubleshooting

CAUSE
Power cord or extension cord unplugged,
or damaged, or building circuit breaker or
fuse has tripped
Motor overload switch opened
Over–pressure switch opened
Pressure setting too low
Pressure control frozen or damaged by
over–pressurization.
Spray tip or filter plugged
Wrong type extension cord
Circuit board has failed
Motor capacitor has failed
Pressure setting too low
Displacement pump outlet filter dirty
Tip or tip filter clogged
Paint dried on the displacement rod
Connecting rod worn or damaged
Drive housing worn or damaged
Clutch worn or damaged
Pinion assembly worn or damaged
Sprayer is not primed.
Spray tip too big or worn
Piston ball check not seating
Piston packings worn or damaged
Intake valve ball check not seating
Displacement pump worn or damaged
Clutch worn or damaged
Drive assembly damaged
SOLUTION
Check, reset or replace.
Unplug power supply cord, relieve pressure, al-
low motor to cool. See NOTE A, page 15.
Reset. Correct cause of over–pressure. See
page 9, Step 5., and NOTE C, page 15.
Increase.
Try to thaw, or replace pressure control. See
NOTE B and C, page 15.
Remove and clean.
Use maximum 30 m, 3 wires, 1.5 mm gauge mini-
mum, grounded extension cord.
Replace the circuit board inside
electrical junction box. See page 27.
Replace the capacitor. See page 28.
Increase pressure.
Clean filter.
Clean tip or tip filter.
Service pump. See page 32.
Replace. See page 19.
Replace. See page 21.
Service. See page 25.
Service. See page 22.
Prime sprayer. See page 8.
Change the spray tip.
Service. See page 32.
Replace. See page 32.
Service. See page 32.
Replace. See page 32.
Service. See page 25.
Replace. See page 21.