Graco 3A0420T important safety instructions Heat Fluid, Follow Prime Empty System

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Prime Empty System

Recirculate Prior to Spraying or Re-Prime After a Pump Runs Dry

NOTE: Agitate, recirculate, and heat the material only as necessary to avoid mixing air into the fluid.

Use the recirculation mode when heating the material is required. Note the temperature at the top of the heater (outgoing or back to the hopper). When the thermome- ter reaches operating temperature, the material is ready to spray.

If using a system that does not require heat, recircula- tion is still required prior to spraying. Recirculation ensures that any settled fillers are mixed in, the pump lines are fully primed, and the pump check valves are operating smoothly.

Recirculation also allows you to re-prime one side that has run dry.

1.Follow Prime Empty System, page 23.

2.Close the dual shutoff handle (AE).

AC

AE

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3.Ensure the recirculation hoses (U) are in the correct hoppers (J).

U

J

4. Open the circulation valve handle (AC).

5.Turn down the air pressure regulator (CB) and then open the main air shutoff valve (CA). Use the air pressure regulator to slowly increase the air pres- sure to the pumps until they start running slowly.

CB

CA

6.Run the pumps for a few minutes or until the mate- rial has reached the desired temperature. See Heat Fluid.

7.Close the main air shutoff valve (CA).

CA

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8. See Spray, page 26.

Heat Fluid

To heat fluid evenly throughout the system:

1.Circulate the fluid at approximately 1/2 gpm

(10-20 cycles/min.) to raise the temperature of the hoppers to 80-90° F (27-32° C).

2.Decrease the circulation rate to approximately

0.25 gpm (5 cycles/min.) to increase the heater out- let temperature to match the spray temperature.

NOTE: Circulating the fluid too quickly without decreasing the circulation rate will increase only the hopper temperature. Similarly, circulating fluid too slowly will increase only the heater outlet tempera- ture.

3A0420T

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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 Cart-Mounted Systems ModelsPump Volume Max Fluid Max Air Mix Gallon Building systems with bare proportioning pump Bare Proportioning Pump PackagesPackages Over Pressure Protection must be used, seeMounting Components for Component IdentificationMain Air Controls Fluid Control AssemblyPump Key Solvent Flush Pump Kit 262393 optionalAir Controls Flush Before Using Equipment Fluid Line AccessoriesOptional Accessories Air LineLocation SetupGrounding Hazardous location systems only Wire Systems with Explosion-Proof HeatersCheck Motor Position Motor PositionChange Motor Position Connect Fluid Hose Bundles Remote Mix Manifold Only Connect Air SupplyConnect Static Mixers, Gun, and Hoses Relieve a and B Fluid Pressure Pressure Relief ProcedurePrime a and B Fluids Prime Empty SystemPrime Solvent Flush Pump Follow Prime Empty System, Heat FluidSpray Side Mix Manifold Restriction To Adjust the RestrictorFlush Mixed Material Follow Pressure Relief Procedure,Flush Mix Manifold, Hose, and Spray Gun Use Optional Solvent PumpGuidelines ProcedurePark ShutdownSystem Verification Maintenance Problem Cause Solution TroubleshootingHardener Pump Falling Pump TroubleshootingTrouble Area Resin Pump Leakage Resin PumpRemove Pump Assembly Pump AssemblyRemove Displacement Pump RepairRemove Motor Replace Air Control AssemblyReplace Air Filter Element Replace System Air RegulatorAir Flow Air Control AssemblyFluid Circulation Manifold with Over Pressure Relief Valves Mix Manifold AssemblyReplace Over Pressure Relief Valves Circulation Fluid Circulation Manifold Replacement GuideTarget Opening Manifold Valve Pressure Color Psi MPa, bar Use withOptional Solvent Pump HoppersOptional Fluid Heaters Service and RepairReplace Cart-Mounted System PartsStandard Mix Manifold Models Quickset Mix Manifold Models Washer Parts Common to All Systems Description QtyParts 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 Model 571100 shown Bare Proportioning Pump PackageParts Varying by Pump Package Parts Common to All Pump PackagesQty Ref. No. Part No. Description Air ControlsFluid Circulation Manifold with Over Pressure Relief Valve Assembly 262784 XP35 262783 XP50 262806 XP70Part Description Qty Ref Manifold to also fit Series a XP Proportioners withPump Repair Kits Recommended Spare PartsPump Filter O-rings packs Recirculation/Overpressure valve seeAcceptable For Use in Explosive Atmospheres Accessories and KitsNot 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 Hydraulic Unit Dimensions Floor Stand 24M281 DimensionsDimensions 3A0420T Graco Information Graco Standard Warranty