Graco 332458B important safety instructions Fluid Supply, Fluid Requirements

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Fluid Supply

Fluid Supply

Fluid Requirements

•To reduce the risk of equipment overpressurization and rupture which can cause injury, including skin injection, do not exceed the pressure rating of the lowest rated system component. See the identification label for the maximum working pressure of the equipment.

•To reduce the risk of injury, including skin injection, you must install a shutoff valve between each fluid supply line and the mix manifold. Use the valves to shut off fluid during maintenance and service.

Models are available to operate air spray (300 psi) or air-assisted (1500 psi) systems with a capacity of up to 800 cc/minute (depending on material viscosity).

•Fluid supply pressure tanks, feed pumps, or circulating systems can be used to supply fluid to the system.

•Materials can be transferred from their original containers or from a central paint recirculating line.

•Install a 100 mesh (minimum) fluid filter in the fluid supply line, with a drain valve.

•The supply line should be sized to avoid pressure loss of greater than a few psi between the circulation header and the proportioner fluid inlet port.

NOTE: The fluid supply must be free of pressure spikes, which are commonly caused by pump stroke changeover. Read the supply pressure on the gauge (P, see figure on next page). Supply capability for each pump must be at least 2 times the maximum operating flow rate. Supply pressure must be as close as possible to the pressure setpoint:

•For low pressure systems, ± 100 psi (0.7 MPa, 7 bar) of setpoint.

NOTE: For low pressure systems, the pressure should be maintained at 1/2 to 2/3 of the system operating pressure.

•For high pressure systems, ± 300 psi (2.1 MPa, 21 bar) of setpoint.

If necessary, install pressure regulators or a surge tank on the pump fluid inlet lines to reduce pulsation. Contact your Graco distributor for additional information.

332458B

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Contents ProMix PD2K Proportioner for Automatic Spray Applications Important Safety InstructionsRelated Manuals Contents0359 ModelsModel AC2000 High Pressure Identification Label Electric Shock Hazard Fire and Explosion HazardSkin Injection Hazard Intrinsic SafetyMoving Parts Hazard Toxic Fluid or FumesEquipment Misuse Hazard Personal Protective EquipmentIsocyanate Conditions Important Isocyanate ISO InformationMoisture Sensitivity of Isocyanates Changing MaterialsLength ft m System Control Drawing 16P577Hazardous Classified Location NON-HAZARDOUS Location onlyConfigure Your System Select a Base ModelComponent Description Hazardous Classified Location NON-HAZARDOUS Location only Typical InstallationHose Selection Tool Select HosesRecommended Hose Sizes internal diameter for a and B Viscosity Ratio Resin a Catalyst BSelect a Spray Gun Spray GunsApplication Gun Model Gun Manual No Select Non- is Color and Catalyst Change Kits Low Pressure Circulating KitsKit Part No Kit Description Color + Solvent Valves Select is Remote Color Change KitsSelect Pump Expansion Kits Mounting the PD2K Base Unit General InformationAdvanced Display Module Connection Ports Install the Display ModuleAir Requirements Air SupplyAir Connections Key Connection DescriptionFluid Requirements Fluid SupplyColor Change Connections Single Color ConnectionsCatalyst 35 cc pumps Repeat for the lower throat cartridge TSL Cup KitLight Tower Accessory Solvent Meter AccessoryElectrical Supply Wire KeyElectrical Requirements Electrical ConnectionsGrounding Key Hazardous Location NON-HAZARDOUS LocationObject Being Sprayed Solvent Reservoir or Purge StationCheck Resistance Power Module Electrical SchematicsEfcm Efcm J8 J9 J15 J16 J14 J10 J15 J16 Electrical Schematic, Sheet 3, Hazardous Location Optional Cables Modules Dimensions Positive Displacement Metric Proportioner Technical DataGraco Information Graco Standard Warranty
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