Graco XP70 important safety instructions Pressure Relief Procedure, Relieve a and B Fluid Pressure

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Pressure Relief Procedure

Pressure Relief Procedure

Follow Flush Mixed Material, page 26 when you stop spraying or dispensing; and before cleaning, checking, servicing, or transporting equipment.

Relieve A and B Fluid Pressure

1. Engage the trigger lock.

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

CA

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3.Shut off heaters, if used.

4.Shut off feed pumps, if used.

5.Remove the spray tip and clean.

6.Disengage the trigger lock.

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7.Hold a metal part of the gun firmly to a grounded metal pail. Trigger the gun to relieve pressure.

8.Engage the trigger lock.

9.Close the dual shutoff handle (AE) and open the cir- culation handle (AC).

AC

AE

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10.Always flush the mix hose after relieving A and B fluid pressure through the mix manifold. See Flush Mixed Material, page 26.

11.Shutoff the solvent supply pump and repeat steps 6-8 to relieve solvent pressure.

If the mixed material has already been flushed, but pressure remains on the A and B pumps, pressure can be relieved back to the hoppers (J).

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

b.Open the circulation handle (AC).

NOTE: For longer valve life in abrasive fluids, it is advisable to relieve high pressure out through the gun when possible.

12.If you suspect the spray tip or hose is clogged or that pressure has not been fully relieved after follow- ing the steps above, very slowly loosen tip guard retaining nut or hose end coupling to relieve pres- sure gradually, then loosen completely. Clear hose or tip obstruction.

13.If static mixer, whip hose, and gun cannot be flushed because of mixed and cured material, very slowly loosen static mixer tube from mix manifold outlet to relieve pressure gradually, then loosen completely. Replace or clean clogged components.

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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 ParkSystem 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