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Basic Troubleshooting
Check everything in this Basic Troubleshooting Table before you bring the sprayer to a Graco authorized service
center.
Problem
Sprayer Will Not Operate
Basic Fluid Pressure
Basic Mechanical
Basic Air Pressure
333114D
What To Check
(If check is OK, go to next check)
1.
Pressure control knob setting.
Motor will not run if set at minimum
(fully counter-clockwise).
2.
Spray tip or fluid filter may
be clogged.
1.
Pump frozen or hardened paint
2.
Motor. Remove drive housing
assembly. See page 90.
Try to rotate fan by hand.
1.
Power/function selector.
2.
Air ON/OFF valve at gun may
be closed.
What To Do
(When check is not OK, refer to this column)
Slowly increase pressure setting to see if motor
starts.
Relieve Pressure, page 30. Then clear clog or
clean gun filter. Refer to gun instruction manual,
313347.
Thaw sprayer if water or water-based paint has fro-
zen in sprayer. Place sprayer in warm area to thaw.
Do not start sprayer until thawed completely. If paint
hardened (dried) in sprayer, replace pump packings.
See page 90.
Replace motor if fan won't turn. See page 49,
Motor Replacement.
Ensure selection is ON.
Turn air adjustment valve counter-clockwise to
open. Slide air ON/OFF up to open.
Basic Troubleshooting
51
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