Graco Inc PRO 4500sc, 308131, 224400, 224200 manual Electrical Troubleshooting with SVR

Page 19

Troubleshooting

Electrical Troubleshooting with SVR

NOTE: Additional gun troubleshooting can be done using the Remote Spraying Voltage Readout (SVRt). See Accessories to order the SVR and the RF transmitting power supply.

Problem

Cause

Solution

Lower than normal voltage output

Insufficient air pressure to the turbine alternator.

Increase the air pressure to the gun.

Faulty turbine alternator.	Replace the turbine alternator. See page 28.

Improper distance between gun and	Adjust the spraying distance to 8–12 in.
workpiece.	(203–305 mm).

Fluid resistivity is too low.	Check the fluid resistivity with a paint meter
	and probe.

Dirty gun.

Clean the gun. See page 14.

Higher than normal voltage out-	Faulty gun resistance.	Check the gun resistance. See page 20.
put
	Fluid resistivity higher than normal.	Check the fluid resistivity with a paint meter
		and probe.

308131 19

Image 19

Contents Read and Keep for Reference 308131Part No , Series B Air Spray Gun with two-finger trigger Part No , Series B Air Spray Gun with four-finger trigger308131 Symbols Table of ContentsFIRE, EXPLOSION, and Electric Shock Hazard Pressurized Equipment Hazard KEY InstallationNon-Hazardous Area Hazardous AreaVentilate the Spray Booth Installing the SystemConnect the Air Line Refer to Fig Ground the System Connect the Exhaust TubeFIRE, EXPLOSION, Electric Shock Hazard Check the Electrical Grounding See Fig Page Filter the Fluid Pressure Relief ProcedureOperating Checklist OperationOperating the Spray Gun Selecting a Fluid Nozzle and Air CapComponent Rupture Hazard Fine Adjustments of the Spray Gun Atomizing Air Valve AdjustmentFIRE, EXPLOSION, and Electric Shock Hazard MaintenanceDaily Care and Cleaning ShutdownEquipment needed Clean the Air Cap and Fluid NozzleProcedure Flush the Spray GunSpray Pattern Troubleshooting TroubleshootingProblem Cause Solution Gun Operation Troubleshooting See Check the Electrical Grounding Electrical TroubleshootingElectrical Troubleshooting with SVR Test Gun Resistance See Fig Electrical TestsTest Resistor Stud Resistance See Fig Test Power Supply Resistance See FigPrepare the Gun for Service ServiceAir Cap/Nozzle/Resistor Stud Replacement Electrode Needle Replacement Barrel Removal Fluid Packing Removal Fluid Packing Rod Repair Power Supply Adjustment Power Supply Removal and ReplacementBarrel Installation Turbine Alternator Removal ReplacementDetail Fan Air Adjustment Valve Repair45c 45a 45b 45d 41 45e Fluid Adjustment Assembly RepairAir Trigger Valve Repair Atomizing Air Valve Removal and ReplacementMoving Parts Hazard ES ON-OFF Valve Repair308131 Detail a PartsElectrostatic Air Spray Gun, with four-finger trigger Part No , Series BAir Shutoff Valve AccessoriesConductive Air Supply Hose black Extended Air FittingMegohmmeter Grounding Clamp and WireSafety Warning Signs Fluid Hose Assemblies NylonGun System GUN SystemsFCC ID JHI1 Technical DataManual Change Summary Category DataGraco Phone Number Graco Standard WarrantyToll Free