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Graco 3A0420T important safety instructions Overview, Usage, Over Pressure Protection

Models: 3A0420T

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Overview

Usage

The XP is a mechanically linked fixed ratio system that can mix and spray most two-component epoxy and ure- thane protective coatings. When using quick-setting material (less than 10 minute pot life) a remote mix man- ifold must be used or materials must mix at the gun. Quickset manifold 24M398 is recommended for quick-setting material.

The two pumps are carbide seat severe duty positive displacement pumps that displace fluid on both strokes.

The XP systems are not approved for use in hazard- ous 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 XP model.

Overview

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.

•Cart-Mounted Systems Only: Maximum air pres- sure set point blow off valves are provided to limit maximum fluid pressure. Do not remove these valves.

•Color coded automatic over pressure relief valves are used on cart-mounted systems to

dump excess fluid pressure back to the supply. Never plug these return hoses. See Fluid Circu- lation Manifold with Over Pressure Relief Valves on page 38.

•When using an XP bare pump package to build a system, use the over pressure relief valves refer- enced above.

•Never install individual shut off valves on the “A” and “B” lines. On cart-mounted systems, com- mon handles link the fluid control valves.

•On models other than 1:1 mix ratio, a rupture disc is provided on the small side fluid pump (pumps 72cc and smaller) as a back-up to the over pres- sure relief valve. If the rupture disc ever opens, do not operate the machine until the over pres- sure valve and the rupture disc have been replaced.

•If changing pump lowers or motor on your sys- tem, use the correct over pressure relief valves from the chart on page 39.

3A0420T

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Graco 3A0420T important safety instructions Overview, Usage, Over Pressure Protection

Contents

XP Proportioners Contents Related Manuals Fire and Explosion Hazard Skin Injection Hazard Toxic Fluid or Fumes Hazard Important Two-Component Material Information Changing Materials B Component DesignationsEquipment Designations Overview UsageOver 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 AssemblySolvent Flush Pump Kit 262393 optional Pump KeyAir Controls Flush Before Using Equipment Fluid Line AccessoriesOptional Accessories Air LineSetup LocationGrounding Hazardous location systems only Wire Systems with Explosion-Proof HeatersMotor Position Check Motor PositionChange Motor Position Connect Air Supply Connect Fluid Hose Bundles Remote Mix Manifold OnlyConnect 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 AssemblyMix Manifold Assembly Fluid Circulation Manifold with Over Pressure Relief ValvesReplace Over Pressure Relief Valves Circulation Fluid Circulation Manifold Replacement GuideTarget Opening Manifold Valve Pressure Color Psi MPa, bar Use withOptional Solvent Pump HoppersService and Repair Optional Fluid HeatersReplace 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 Dimensions Top ViewSide 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