Graco Inc 261820 specifications Pressure Control Switch Diagnostics, ProX7, ProX9, X5

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Pressure Control Switch Diagnostics

Pressure Control Switch Diagnostics

ProX7, ProX9, X5, and X7

If pressure control switch diagnostics reveal a damaged pressure control, replace it with the correct Pressure Con- trol Switch Kit, see page 26. X5 and X7 sprayers have different pressure control kits because stall pressure is pre- set at the factory.

1.Unplug power cord and Relieve Pressure, page 9.

2.If paint is leaking from pressure control switch between pressure control knob and base, replace pressure control switch.

3.ProX7 and ProX9: Remove front cover, yoke, and pins. Disconnect pressure control switch connector from control board.

X5 and X7: Remove enclosure and disconnect pressure control switch connector from control board. Use finger to support control board when removing pressure control switch connector.

4.Use ohmmeter to check for no continuity between sprayer ground and both pressure control terminals

in connector. If either pressure control switch lead is shorted to ground, pressure control switch wires have been pinched to ground during assembly and pressure control switch needs to be replaced.

5.Use Ohmmeter to measure across two terminals in pressure control connector. No continuity or open circuit should exist when pressure control knob is at lowest pressure setting (full counter-clockwise). Replace pressure control switch if continuity exists.

6.Using ohmmeter to measure across two terminals in pressure control connector. Continuity or closed circuit should exist when pressure control knob is set at maximum pressure (full clockwise). Replace pressure control switch if no continuity exists.

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312667B

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Contents ProX9 Airless Sprayers 312667B US Patent 6,752,067 European Patent 1 208 Korean PatentRelated Manual Specifications Getting StartedFold-n-StoreCart ProX Sprayers Only Grounding Instructions Fire and Explosion Hazard Equipment Misuse Hazard Installation Grounding and Electric RequirementsThermal Overload Component Identification ProX Sprayers OnlyX7, ProX7, and ProX9 Only ProX9 OnlySG20 SG10 Pressure Control Knob Settings Pressure Relief Procedure OperationTrigger Lock Trigger Locked SG10 Trigger Unlocked SG10General Repair Information Basic Troubleshooting Grounding and Electric RequireProX7 and ProX9 Insert screw Read Pump does not prime section ProX7 and ProX9 OnlyGrounding and Electrical Requirements,Grounding and Electrical Advanced Troubleshooting General Problem Motor Does Not OperateSee Control Board Diagnostics, Hazard After Thermal General Problem Circuit Breaker is Tripping General Problem Erratic Motor Operation Electric Requirements,Control. See List of Kits, General Problem Low or Fluctuating Output Switch Kit, See Control Board Diagnostics, page 25. If Prime/Spray Valve Kit,General Problem Excessive Pressure Build Up Control Switch Kit,Use Pressure Control Switch Kit, to replace Motor Diagnostics X5 Motor Diagnostics ProX7 and ProX9Setup Setup Relieve Pressure,Pressure Control Switch Diagnostics ProX7, ProX9, X5,Control Board Diagnostics ProX7 and ProX9 Control Board Diagnostics X5Pump Diagnostics List of Kits Kit Number Models Kit DescriptionX5 Model 262800 Parts List PartsPart Description Qty X5 Model X5, Model X7 Model 262805 Parts List X7 Model 41a 41b 41c 67a 47a 41d 67b 85a ProX7 and ProX9 Models 261815 and 261820 Parts List HUB CAPProX7 and ProX9 Models 261815 ProX7 and ProX9 Models 261810 Wiring Diagrams X5 and X7 Models 262800ProX7 and ProX9 Models 261815 Technical Data Magnum ProX7 Magnum ProX9Graco Standard Warranty For Graco Canada CustomersGraco INC. P.O. BOX 1441 MINNEAPOLIS, MN