Pump Troubleshooting, Hardener Pump Falling | Graco 3A0420T guide

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 other 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
			Rising

r_258914_3a0420a_11a

Hardener

Pump

Falling

r_258914_3a0420a_11a

TROUBLE AREA: Resin Pump Leakage

1.Throat packing

2.Intake ball check

Resin

Pump

TROUBLE AREA:

Hardener Pump Leakage

1.Throat packing

2.Intake ball check

Hardener	Resin
Pump	Pump

Hardener Pump

Falling	Rising	Rising	Falling
	r_258914_3a0420a_10a		r_258914_3a0420a_10a

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3A0420T

Image 34

Graco 3A0420T important safety instructions Pump Troubleshooting, Hardener Pump Falling, Trouble Area Resin Pump Leakage

Contents

XP Proportioners Contents Related Manuals Fire and Explosion Hazard Skin Injection Hazard Toxic Fluid or Fumes Hazard Important Two-Component Material Information B Component Designations Changing MaterialsEquipment Designations Usage OverviewOver Pressure Protection Initial System Setup Models Cart-Mounted Systems Pump Volume Max Fluid Max Air Mix Gallon Packages Bare Proportioning Pump PackagesBuilding systems with bare proportioning pump Over Pressure Protection must be used, see Component Identification Mounting Components for Fluid Control Assembly Main Air Controls Pump Key Solvent Flush Pump Kit 262393 optionalAir Controls Optional Accessories Fluid Line AccessoriesFlush Before Using Equipment Air Line Location SetupGrounding Wire Systems with Explosion-Proof Heaters Hazardous location systems only Check Motor Position Motor PositionChange Motor Position Connect Fluid Hose Bundles Remote Mix Manifold Only Connect Air SupplyConnect Static Mixers, Gun, and Hoses Pressure Relief Procedure Relieve a and B Fluid Pressure Prime Empty System Prime a and B Fluids Prime Solvent Flush Pump Heat Fluid Follow Prime Empty System, Spray To Adjust the Restrictor Side Mix Manifold Restriction Flush Mix Manifold, Hose, and Spray Gun Follow Pressure Relief Procedure,Flush Mixed Material Use Optional Solvent Pump Procedure Guidelines Shutdown Park System Verification Maintenance Troubleshooting Problem Cause Solution Trouble Area Resin Pump Leakage Pump TroubleshootingHardener Pump Falling Resin Pump Remove Displacement Pump Pump AssemblyRemove Pump Assembly Repair Replace Air Filter Element Replace Air Control AssemblyRemove Motor Replace System Air Regulator Air Control Assembly Air Flow Fluid Circulation Manifold with Over Pressure Relief Valves Mix Manifold AssemblyReplace Over Pressure Relief Valves Target Opening Manifold Valve Fluid Circulation Manifold Replacement GuideCirculation Pressure Color Psi MPa, bar Use with Hoppers Optional Solvent Pump Optional Fluid Heaters Service and RepairReplace Parts Cart-Mounted System Standard Mix Manifold Models Quickset Mix Manifold Models Parts Common to All Systems Description Qty Washer Parts Varying By Model XP35 Systems Ref Part Description Coupling 283101 283102 283201 283202 283301 283302 283401 283402 Parts Varying By Model XP70 Systems Part Description Bare Proportioning Pump Package Model 571100 shown Parts Common to All Pump Packages Parts Varying by Pump Package Air Controls Qty Ref. No. Part No. Description Part Description Qty Ref Assembly 262784 XP35 262783 XP50 262806 XP70Fluid Circulation Manifold with Over Pressure Relief Valve Manifold to also fit Series a XP Proportioners with Pump Filter O-rings packs Recommended Spare PartsPump Repair Kits Recirculation/Overpressure valve see Accessories and Kits Acceptable For Use in Explosive Atmospheres Not Approved For Explosive Atmospheres Technical Data Top View DimensionsSide View Floor Mounting Dimensions, Top View Bare Proportioner Mounting Hole Dimensions Wall Mount Bracket 262812 Dimensions Floor Stand 24M281 Dimensions Hydraulic Unit Dimensions Dimensions 3A0420T Graco Standard Warranty Graco Information