Graco XP70 important safety instructions Pump Troubleshooting

Page 32

Troubleshooting

Problem	Cause	Solution

Fluid outlet pressure gauges split	Not fully loading one side on	Increase feed pressure on side that
only at the top changeover (if one	upstroke.	dropped.
gauge drops, the others will rise).		Increase feed hose size.
		Increase feed hose size.
		Clean inlet strainer or hopper screen.

	Air mixed in fluid from excessive agi-	Flush and add new fluid.
	tation or circulation.

Pump Troubleshooting

This chart uses proportioning fluid gauges to determine pump malfunctions. Observe the gauge readings during the stroke direction indicated by the bold arrow, and immediately after closing the gun or mix manifold. Refer to other manuals to troubleshoot individual components.

TROUBLE AREA:		TROUBLE AREA:
Resin Pump Leakage		Hardener Pump Leakage
1.	Throat packing	1.	Throat packing
2.	Piston packing	2.	Piston packing
3.	Piston ball check	3.	Piston ball check
	Resin	Hardener	Resin
	Pump	Pump	Resin
	Pump	Pump	Pump
			Pump
	Falling	Rising

Rising

Hardener Pump

Falling

TROUBLE AREA: Resin Pump Leakage

1.Throat packing

2.Intake ball check

Resin

Pump

r_258914_3a0420a_11a

TROUBLE AREA:

Hardener Pump Leakage

1.Throat packing

2.Intake ball check

Hardener	Resin
Pump	Pump

r_258914_3a0420a_11a

Hardener

Pump

Falling	Rising	Rising	Falling
	r_258914_3a0420a_10a		r_258914_3a0420a_10a

32

3A0420H

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Contents XP70 Plural-Component Sprayer Contents Related Manuals Manual DescriptionFire and Explosion Hazard Skin Injection Hazard Toxic Fluid or Fumes Hazard Important Two-Component Material Information Machine Left Machine Right Market Equipment Designations Changing MaterialsB Component Designations Over Pressure Protection OverviewUsage Initial System Setup Bare Proportioning Pump Packages ModelsCart-Mounted XP70 Sprayers Component Identification Mounting Components forFluid Control Assembly Main Air ControlsSolvent Flush Pump Kit 262393 optional Included with optional solvent flush pump kit KeyFluid Line Accessories Flush Before Using EquipmentOptional Accessories Air LineGrounding SetupLocation Wire Sprayers with Explosion-Proof Heaters Hazardous location sprayers onlyAir Motor Position Position Air MotorConnect Static Mixers, Gun, and Hoses Connect Air SupplyConnect Fluid Hose Bundles Remote Only Pressure Relief Procedure Relieve a and B Fluid PressurePrime Empty Sprayer Prime a and B FluidsPrime Solvent Flush Pump Recirculate or Re-Prime After a Pump Runs Dry Without HeatWith Heat Heat FluidSpray Side Mix Manifold Restriction Follow Pressure Relief Procedure, Flush Mixed MaterialFlush Mix Manifold, Hose, and Spray Gun Use Optional Solvent PumpProcedure GuidelinesShutdown Park System Verification Maintenance Troubleshooting Problem Cause SolutionPump Troubleshooting Pump Assembly Remove Pump AssemblyRemove Displacement Pump RepairReplace Air Control Assembly Air ControlsRemove Air Motor Replace Air Filter ElementAir Control Assembly Air FlowReplace Drain Valve Cartridges Mix Manifold AssemblyFluid Circulation Manifold Repair Hoppers Solvent PumpReplace Service and RepairOptional Fluid Heaters Parts Cart-Mounted XP70 Sprayer49 a 49 B 27, 28 32 27 Common Parts Part Description QtyParts Varying by Model with Hoppers Parts Varying by Model with No HoppersBare Proportioning Pump Package 122 106 105 135 117 108 101 138 139 140571100 571150 571200 571250 571300 571400 Qty Varying PartsRatio Description 202 211 205 209 210 Ref. No. Part No. Description QtyFluid Manifold Part No. Description QtyPump Filter O-rings packs Recommended Spare PartsPump Repair Kits Pump Performance Charts Calculate Fluid Outlet PressureCalculate Pump Air Flow/Consumption 11 or 21 Mix Ratio31 Mix Ratio Pump Performance ChartsMix Ratio Bar MPaPsig PressureNot Approved For Explosive Atmospheres Accessories and KitsAcceptable For Use in Explosive Atmospheres Technical Data Psi MPa, bar Psi MPa, psi Gpm ltr/minDimensions Floor Mounting Dimensions Top VIewTop VIew Side VIewBare Proportioner Mounting Hole Dimensions Graco Standard Warranty Graco Information