Graco Inc 307-712, PRO 5000 Electrical Troubleshooting Chart, See Check the Electrical Grounding

ELECTRICAL TROUBLESHOOTING CHART

PROBLEM	CAUSE	SOLUTION
Poor wrap±around.	*Turbine alternator not operating.	Check air supply to turbine. Check for
		dirt or moisture in turbine. See page 23.
	Improper distance between gun	Adjust spraying distance to
	and workpiece.	203±305 mm (8±12 in.).
	Parts poorly grounded.	Clean hangers, check for proper
		ground on conveyer or track.
	High booth exhaust velocity.	Reduce within code limits.
	Atomizing air pressure too high.	Reduce air pressure.
	Fluid pressure too high.	Reduce fluid pressure.
	Fluid viscosity.	Check supplier for proper fluid for
		electrostatic spray.
	Fluid resistivity too low.	Check fluid resistivity with paint
		meter and probe.
	Faulty gun resistance.	Check gun resistance. See page 16.
	Faulty resistor stud resistance.	Check resistor stud resistance.
		See page 17.
	Faulty power supply resistance.	Check power supply resistance.
		See page16.
	Faulty electrode.	Replace electrode. See page 18.
	*Faulty turbine alternator.	Be sure plug is in place on back of
		turbine alternator housing.Remove and
		test turbine alternator. See page 23.
Operator gets mild	Operator not properly grounded or is in	Be sure floor is properly grounded.
shock.	contact with ungrounded object.	Wear shoes with conductive soles
		or wear personal grounding straps.
		Be sure operator is not in contact
		with or carrying any metallic items
		which could build up electrical charge.
	Gun not properly grounded.	See Check the Electrical Grounding,
		page 8. Be sure Graco electrically con-
		ductive air supply hose is being used
		and is properly grounded.
Operator gets mild	Work piece not properly	Clean work piece hangers. Check for
shock when touching	grounded.	proper ground on conveyor or track.
work piece.

*ES indicator light not on when gun is triggered.

￿￿7￿7￿￿ ￿5