Graco XP70 important safety instructions Overview, Usage, Over Pressure Protection

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Overview

Overview

Usage

The XP70 plural-component sprayer is a mechanical fixed ratio sprayer that can mix and spray most two-com- ponent epoxy and urethane protective coatings. When using quick-setting material (less than 10 minute pot life) a remote mix manifold must be used.

The two pumps are carbide seat severe duty positive displacement pumps that displace fluid on both strokes simultaneously on ratio to one another.

XP70 sprayers are not approved for use in hazardous locations unless the base model, all accessories, all kits, and all wiring meet local, state, and national codes. See Important Two-Component Material Information, page 7, to determine the appropriate location for your particular sprayer model.

Over Pressure Protection

Mechanically linked pumps can create excessive fluid pressure if the full motor force is applied to only one of the fluid pumps.

•Maximum air pressure set point blow off valves are provided to limit maximum fluid pressure. Do not remove these valves.

•Automatic pressure relief valves are used to dump excess pressure back to the supply. Never plug these return hoses.

•Common handles link the fluid control valves. Never install individual shut off valves on the “A” and “B” lines.

•On models other than 1:1 mix ratio, a rupture disc is provided on the small side fluid pump as a back-up to the over pressure relief valve. If the rupture disc ever opens, do not operate the machine until the over pressure valve and the rupture disc have been replaced.

3A0420H

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Contents XP70 Plural-Component Sprayer Contents Manual Description Related ManualsFire and Explosion Hazard Skin Injection Hazard Toxic Fluid or Fumes Hazard Important Two-Component Material Information Changing Materials B Component DesignationsMachine Left Machine Right Market Equipment Designations Overview UsageOver Pressure Protection Initial System Setup Models Cart-Mounted XP70 SprayersBare Proportioning Pump Packages Mounting Components for Component IdentificationMain Air Controls Fluid Control AssemblyIncluded with optional solvent flush pump kit Key Solvent Flush Pump Kit 262393 optionalFlush Before Using Equipment Fluid Line AccessoriesOptional Accessories Air LineSetup LocationGrounding Hazardous location sprayers only Wire Sprayers with Explosion-Proof HeatersPosition Air Motor Air Motor PositionConnect Air Supply Connect Fluid Hose Bundles Remote OnlyConnect Static Mixers, Gun, and Hoses Relieve a and B Fluid Pressure Pressure Relief ProcedurePrime a and B Fluids Prime Empty SprayerPrime Solvent Flush Pump Without Heat Recirculate or Re-Prime After a Pump Runs DryWith Heat Heat FluidSpray Side Mix Manifold Restriction Flush Mixed Material Follow Pressure Relief Procedure,Flush Mix Manifold, Hose, and Spray Gun Use Optional Solvent PumpGuidelines ProcedurePark ShutdownSystem Verification Maintenance Problem Cause Solution TroubleshootingPump Troubleshooting Remove Pump Assembly Pump AssemblyRemove Displacement Pump RepairAir Controls Replace Air Control AssemblyRemove Air Motor Replace Air Filter ElementAir Flow Air Control AssemblyMix Manifold Assembly Fluid Circulation ManifoldReplace Drain Valve Cartridges Repair Solvent Pump HoppersService and Repair Optional Fluid HeatersReplace Cart-Mounted XP70 Sprayer Parts49 a 49 B 27, 28 32 27 Part Description Qty Common PartsParts Varying by Model with No Hoppers Parts Varying by Model with Hoppers122 106 105 135 117 108 101 138 139 140 Bare Proportioning Pump PackageVarying Parts Ratio Description571100 571150 571200 571250 571300 571400 Qty Ref. No. Part No. Description Qty 202 211 205 209 210Part No. Description Qty Fluid ManifoldRecommended Spare Parts Pump Repair KitsPump Filter O-rings packs Calculate Fluid Outlet Pressure Pump Performance ChartsCalculate Pump Air Flow/Consumption 11 or 21 Mix RatioPump Performance Charts Mix Ratio31 Mix Ratio MPa BarPsig PressureAccessories and Kits Acceptable For Use in Explosive AtmospheresNot Approved For Explosive Atmospheres Psi MPa, bar Psi MPa, psi Gpm ltr/min Technical DataFloor Mounting Dimensions Top VIew DimensionsTop VIew Side VIewBare Proportioner Mounting Hole Dimensions Graco Information Graco Standard Warranty