Graco 3A0868G important safety instructions Dynamic Dosing Restrictor Selection Graphs, Example

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Dynamic Dosing Restrictor Selection Graphs

Dynamic Dosing Restrictor Selection Graphs

Use the graphs on pages 61- 65 as a guide to determine the correct restrictor size for your desired flow and mate- rial viscosity. Table 4 lists the available restrictor sizes.

Example:

Application: air spray system with a 5:1 mix ratio

Fluid Supply: 1:1 pumps at 100 psi (7 bar, 0.7 MPa)

Flow Rate: 300 cc/min at the gun

Select the Restrictor Size: choose either the 0.040 or 0.070 orifice, to ensure that the pressure differen- tial is not more than 10-20 psi (0.7-1.4 bar,

0.07-0.14 MPa), provided the fluid viscosities are similar to those tested.

•If the viscosity of component B is lower than the vis- cosity of the chart used for selection you may need to use a smaller restrictor or decrease the pressure differential.

•If the viscosity of component B is higher than the viscosity of the chart used for selection you may need to use a larger restrictor or increase the pres- sure differential.

•In systems using an air-assisted gun, if the fluid pressure of component A is higher than the compo- nent A pressure from the charts you may need to use a larger restrictor or increase the pressure dif- ferential.

Table 4: Restrictor Sizes

Size Code	Orifice Size	Part No.

2*	0.020	15U936

3*	0.030	15U937

4*	0.040	15U938

5✓	0.050	15U939

6✓	0.060	15U940

7*	0.070	15U941

8✓	0.080	16D554

*These restrictors are included in Injection Kit 15U955.

✓These restrictors are optional sizes, not included in the Injection Kit.

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3A0868G

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Contents ProMix 2KE Contents Models USBSeries Ratio Pumps Psi MPa, bar Port Approvals Related Manuals ModelsManual Description Fire and Explosion Hazard Special Conditions for Safe USEElectric Shock Hazard Intrinsic Safety Skin Injection HazardEquipment Misuse Hazard Moving Parts HazardToxic Fluid or Fumes Hazard Personal Protective EquipmentImportant Two-Component Material Information Glossary of Terms Installation OverviewUsage Component Identification and DefinitionIntrinsically Safe Installation Requirements Hazardous Location InstallationNon-Hazardous Locations Display Module Air SupplyRequirements Air regulator and bleed-type shutoff valveFluid Supply Air ConnectionsFluid Connections SVA DVA KeySVB DVB Tubing Chart and Diagrams Used only on is modelsGFB1-A ATOM-1 ATOM-2 Power Connection non-IS units only ElectricalGrounding Grounding Display Module DisplayIG . Display Module Key FunctionIcon Key Run Mode Setup ModeTroubleshooting Screen SummaryScreen User Input Range/Options Default Ranges for User InputsErrors Pump ControlHome RunSet-Up Home Password Configure RecipeMaintenance Calibration Set-Up HomeSystem Outputs Set-Up Home System Inputs System OutputsMembrane Test Power On Initial System SetupBasic Operation Pre-Operation TasksPrime the System Pump Calibration Calibrate the pumpSpraying PurgingBration 1 and 2 Screens 22 and 23, Purging Mixed Material Purging Fluid Supply SystemPurging Mixed Material Purging Fluid Supply SystemSolenoid Valves in Control Box Pressure Relief Procedure Valve SettingsLock Mode ShutdownError Log Use of Optional USB ModuleUSB Logs Job LogSetup Sample Error LogDownload Procedure Recommended USB Flash DrivesUSB Port Run Mode Details Run Mix Spray ScreenRun Home Screen Run Mix Batch ScreenRun Log Errors Screens Run Mix Totals ScreenRun Job Number Screen Run Pump Control Screen Run Pump Control ScreenSetup Mode Details Password ScreenSetup Home Screen Configure 1-4 Screens Confirm Change of System TypeConfigure 3 Screen 20 and Configure 4 Screen Recipe 1-1 Screen Recipe 1-2 ScreenMaintenance 1-3 Screens Maintenance RecommendationsRecommended Maintenance Component FrequencyTroubleshooting Screens Calibration 1 and 2 Screens 22Troubleshooting System Inputs Screen Troubleshooting System Outputs ScreenMembrane Test Screen Dynamic Dosing General Operating Cycle, Dynamic DosingSelect a Component B Restrictor Size Pressure Too High Pressure Too Low Pressure B Pressure B Control Range with Properly Sized RestrictorSystem Errors System AlarmsTo Clear Error and Restart Air Flow Switch AFS FunctionSystem Idle Warning Idle Error Codes System Alarm/Advisory/Record CodesAlarm Troubleshooting Alarm and Description Cause SolutionCommunication Error USB Communication ErrorEQU2 Alarm and Description Cause Solution SFA1 or SFB1 PreMix ErrorPneumatic Schematic, page 66 or PreFill ErrorRatio Low Error Already about equal, verify that comQDA1 QDB1Alarm and Description Cause Solution QTA1 or QTB1 Dose Time ErrorLeak Error Linear Sensor ErrorAlarm and Description Cause Solution DDA1 or DDB1 Diving/Cavitation ErrorPark Error Stall Up ErrorDynamic Dosing Restrictor Selection Graphs ExampleRestrictor Sizes Size Code Orifice Size Differential Pressure between a and B Flow Rate cc/min Detail View500 1000 1500 2000 2500 3000 3500 4000 200 14 150 10 100 7 50 3.4 500 1000 Psi 40 2.8 30 2.1 20 1.4 10 0.7 500 1000 Schematics System Pneumatic SchematicPneumatic Schematic Non-Hazardous LocationAIR Flow Switch SIG Hazardous Location Electrical Schematic Fluid J4CONTROL ModulePower Supply Non-Hazardous Electrical Schematic Dimensions and Mounting Merkur Merkur BellowsTechnical Data ProMix 2KE MetricOn-ratio accuracy Noise levelGraco Standard Warranty Graco Information