Graco 3A0868G important safety instructions Purging Mixed Material, Purging Fluid Supply System

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Purging Mixed Material

There are times when you only want to purge the fluid manifold, such as:

end of potlife

breaks in spraying that exceed the potlife

overnight shutdown or end of shift

before servicing the fluid manifold assembly, hose or gun.

1.Press on Run Mix Spray (Screen 2) or from any screen to put the system in Standby.

2.Trigger the gun to relieve pressure.

3.If you are using a high pressure gun, engage the trigger lock. Remove spray tip and clean tip sepa- rately.

4.If using an electrostatic gun shut off the electrostat- ics before flushing the gun.

5.Set the solvent supply pressure regulator at a pres- sure high enough to completely purge the system in a reasonable amount of time but low enough to avoid splashing or an injection injury. Generally, a setting of 100 psi (0.7 MPa, 7 bar) is sufficient.

6.If using a gun flush box, place the gun into the box and close the lid.

7.Press on Run Mix Spray (Screen 2). The purge sequence automatically starts.

If the gun flush box is not used, trig- ger the gun into a grounded metal pail until the purge sequence is com- plete.

When done purging, the system automatically switches to Standby mode.

8.If the system is not completely clean, repeat step 6.

NOTE: If necessary, adjust purge sequence times so only one cycle is required.

Basic Operation

9.Trigger the gun to relieve pressure. Engage trigger lock.

10.If spray tip was removed, reinstall it.

11.Adjust the solvent supply regulator back to its nor- mal operating pressure.

NOTE: The system remains full of solvent.

NOTE: If your system uses 2 guns, you must trigger both guns simultaneously during a purge to purge both guns and lines. Verify that clean solvent flows from each gun. If not, repeat purge or clear clog/blockage in sys- tem.

Purging Fluid Supply System

Follow this procedure before:

the first time material is loaded into equipment

servicing

shutting down equipment for an extended period of time

putting equipment into storage

1.Press on Run Mix Spray (Screen 2) or from any screen to put the system in Standby.

2.Trigger the gun to relieve pressure.

3.If you are using a high pressure gun, engage the trigger lock. Remove spray tip and clean tip sepa- rately.

4.If using an electrostatic gun, shut off the electrostat- ics before flushing the gun.

5.Disconnect the component A and B fluid supplies at the pump inlets, and connect solvent supply lines.

6.Adjust the solvent fluid supply pressure. Use the lowest possible pressure to avoid splashing.

7.Remove the Control Box cover to access the sole- noid valves. See FIG. 19.

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 Skin Injection Hazard Intrinsic SafetyMoving Parts Hazard Equipment Misuse HazardToxic Fluid or Fumes Hazard Personal Protective EquipmentImportant Two-Component Material Information Glossary of Terms Overview InstallationUsage Component Identification and DefinitionHazardous Location Installation Intrinsically Safe Installation RequirementsNon-Hazardous Locations Air Supply Display ModuleRequirements Air regulator and bleed-type shutoff valveFluid Supply Air ConnectionsFluid Connections SVA DVA KeySVB DVB Used only on is models Tubing Chart and DiagramsGFB1-A ATOM-1 ATOM-2 Electrical Power Connection non-IS units onlyGrounding Grounding Display Display ModuleIG . Display Module Key FunctionIcon Key Setup Mode Run ModeTroubleshooting Screen SummaryRanges for User Inputs Screen User Input Range/Options DefaultPump Control ErrorsHome RunRecipe Set-Up Home Password ConfigureCalibration Set-Up Home MaintenanceSystem Outputs Set-Up Home System Inputs System OutputsMembrane Test Initial System Setup Power OnBasic Operation Pre-Operation TasksPrime the System Calibrate the pump Pump CalibrationPurging SprayingBration 1 and 2 Screens 22 and 23, Purging Mixed Material Purging Fluid Supply SystemPurging Fluid Supply System Purging Mixed MaterialSolenoid Valves in Control Box Valve Settings Pressure Relief ProcedureLock Mode ShutdownUse of Optional USB Module Error LogUSB Logs Job LogSample Error Log SetupDownload Procedure Recommended USB Flash DrivesUSB Port Run Mix Spray Screen Run Mode DetailsRun 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 Confirm Change of System Type Configure 1-4 ScreensRecipe 1-1 Screen Recipe 1-2 Screen Configure 3 Screen 20 and Configure 4 ScreenMaintenance Recommendations Maintenance 1-3 ScreensRecommended Maintenance Component FrequencyCalibration 1 and 2 Screens 22 Troubleshooting ScreensTroubleshooting System Inputs Screen Troubleshooting System Outputs ScreenMembrane Test Screen Dynamic Dosing General Operating Cycle, Dynamic DosingSelect a Component B Restrictor Size B Control Range with Properly Sized Restrictor Pressure Too High Pressure Too Low Pressure B PressureSystem Alarms System ErrorsTo Clear Error and Restart Air Flow Switch AFS FunctionSystem Idle Warning Idle System Alarm/Advisory/Record Codes Error CodesAlarm and Description Cause Solution Alarm TroubleshootingCommunication Error USB Communication ErrorEQU2 PreMix Error Alarm and Description Cause Solution SFA1 or SFB1Pneumatic Schematic, page 66 or PreFill ErrorAlready about equal, verify that com Ratio Low ErrorQDB1 QDA1Dose Time Error Alarm and Description Cause Solution QTA1 or QTB1Leak Error Linear Sensor ErrorDiving/Cavitation Error Alarm and Description Cause Solution DDA1 or DDB1Park Error Stall Up ErrorDynamic Dosing Restrictor Selection Graphs ExampleRestrictor Sizes Size Code Orifice Size Flow Rate cc/min Detail View Differential Pressure between a and B500 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 System Pneumatic Schematic SchematicsNon-Hazardous Location Pneumatic SchematicAIR Flow Switch SIG Fluid J4CONTROL Module Hazardous Location Electrical SchematicPower Supply Non-Hazardous Electrical Schematic Merkur Merkur Bellows Dimensions and MountingProMix 2KE Metric Technical DataOn-ratio accuracy Noise levelGraco Information Graco Standard Warranty