Graco XP70 important safety instructions Side Mix Manifold Restriction

Page 25

B Side Mix Manifold Restriction

B Side Mix Manifold Restriction

If the mix manifold (AB) is mounted on the machine, you do not need to adjust the restrictor (AJ). Leave open two turns minimum.

AJ

The B side restrictor (AJ) in the mix manifold is only used when the mix manifold is positioned remote from the machine with a short mix hose to the spray gun, or it has been adjusted as part of the ratio check procedure.

The B side restrictor (AJ) controls “lead/lag” ratio errors of the A and B flow into the static mixer tubes. These errors occur momentarily when the gun opens. The error is caused by differences in viscosity, volume, and hose expansion.

Adjust the restrictor stem (AJ) clockwise while spraying until you see a slight rise in the B side pressure gauge. The point where the pressure starts to rise is a good adjustment setting.

NOTE: Unless you are dispensing directly out of the mix manifold and mixer, this is an approximate adjustment.

See the mix manifold manual for more information.

3A0420H

25

Image 25

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 B Component Designations Changing MaterialsMachine Left Machine Right Market Equipment Designations Usage OverviewOver Pressure Protection Initial System Setup Cart-Mounted XP70 Sprayers ModelsBare 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 LineLocation SetupGrounding Hazardous location sprayers only Wire Sprayers with Explosion-Proof HeatersPosition Air Motor Air Motor PositionConnect Fluid Hose Bundles Remote Only Connect Air SupplyConnect 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 AssemblyFluid Circulation Manifold Mix Manifold AssemblyReplace Drain Valve Cartridges Repair Solvent Pump HoppersOptional Fluid Heaters Service and RepairReplace 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 PackageRatio Description Varying Parts571100 571150 571200 571250 571300 571400 Qty Ref. No. Part No. Description Qty 202 211 205 209 210Part No. Description Qty Fluid ManifoldPump Repair Kits Recommended Spare PartsPump Filter O-rings packs Calculate Fluid Outlet Pressure Pump Performance ChartsCalculate Pump Air Flow/Consumption 11 or 21 Mix RatioMix Ratio Pump Performance Charts31 Mix Ratio MPa BarPsig PressureAcceptable For Use in Explosive Atmospheres Accessories and KitsNot 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