Graco 3A0868G Pressure Relief Procedure, Valve Settings, Lock Mode, Shutdown

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Pressure Relief Procedure

Basic Operation

Power down and power back up again to clear the lock and put the new settings into effect. The lock ensures that the selection was intended and prevents the user from attempting to operate with incorrect settings.

To reduce the risk of skin injection, relieve pressure when you stop spraying, before changing spray tips, and before cleaning, checking, or servicing equipment.

NOTE: The following procedure relieves all fluid and air pressure in the ProMix 2KE system.

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

2.Follow procedure for Purging Fluid Supply Sys- tem, page 33, if desired or necessary.

3.Shut off air supply to A and B pumps and solvent supply pumps.

4.With the gun triggered, push the manual override on the A and B dose and solvent valve solenoids to relieve pressure. See FIG. 19. Verify that fluid pres- sure is reduced to 0.

5.Reinstall the Control Box cover.

Valve Settings

Dose valves and purge valves are factory set with the hex nut 1-1/4 turns out from fully closed. This setting limits maximum fluid flow rate into integrator and mini- mizes valve response time. To open dose or purge valves (for high viscosity materials), turn hex nut (E) counterclockwise. To close dose or purge valves (for low viscosity materials), turn clockwise. See FIG. 21.

E

TI11581a

FIG. 21. Valve Adjustment

Lock Mode

NOTE: Do not change system type, number of guns, hose length or hose diameter when material is loaded in the system. Change these inputs only if system hard- ware is changed.

If you change one of these inputs, the system locks so that you cannot spray or mix. If you have changed to a meter system, the system also locks if you change the dosing type or the number of colors. The lock icons dis- play.

Shutdown

1.Follow Purging, on page 32.

2.Close main air shutoff valve on air supply line and on ProMix 2KE.

3.Non-IS Systems: Shut off ProMix 2KE power (0 position).

Lock icons

FIG. 20. System Lock Mode

3A0868G

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Contents ProMix 2KE Contents Series Ratio Pumps Psi MPa, bar Port Approvals ModelsUSB Manual Description Related ManualsModels Electric Shock Hazard Fire and Explosion HazardSpecial Conditions for Safe USE Skin Injection Hazard Intrinsic SafetyPersonal Protective Equipment Equipment Misuse HazardMoving Parts Hazard Toxic Fluid or Fumes HazardImportant Two-Component Material Information Glossary of Terms Component Identification and Definition InstallationOverview UsageHazardous Location Installation Intrinsically Safe Installation RequirementsNon-Hazardous Locations Air regulator and bleed-type shutoff valve Display ModuleAir Supply RequirementsFluid Connections Fluid SupplyAir Connections SVB DVB SVA DVAKey Used only on is models Tubing Chart and DiagramsGFB1-A ATOM-1 ATOM-2 Electrical Power Connection non-IS units onlyGrounding Grounding Key Function Display ModuleDisplay IG . Display ModuleIcon Key Screen Summary Run ModeSetup Mode TroubleshootingRanges for User Inputs Screen User Input Range/Options DefaultRun ErrorsPump Control HomeRecipe Set-Up Home Password ConfigureCalibration Set-Up Home MaintenanceMembrane Test System Outputs Set-Up Home System InputsSystem Outputs Pre-Operation Tasks Power OnInitial System Setup Basic OperationPrime the System Calibrate the pump Pump Calibration Purging Mixed Material Purging Fluid Supply System Spraying Purging Bration 1 and 2 Screens 22 and 23,Purging Fluid Supply System Purging Mixed MaterialSolenoid Valves in Control Box Shutdown Pressure Relief ProcedureValve Settings Lock ModeJob Log Error LogUse of Optional USB Module USB LogsSample Error Log SetupUSB Port Download ProcedureRecommended USB Flash Drives Run Mix Batch Screen Run Mode DetailsRun Mix Spray Screen Run Home ScreenRun Job Number Screen Run Log Errors ScreensRun Mix Totals Screen Run Pump Control Screen Run Pump Control ScreenSetup Home Screen Setup Mode DetailsPassword Screen Confirm Change of System Type Configure 1-4 ScreensRecipe 1-1 Screen Recipe 1-2 Screen Configure 3 Screen 20 and Configure 4 ScreenComponent Frequency Maintenance 1-3 ScreensMaintenance Recommendations Recommended MaintenanceCalibration 1 and 2 Screens 22 Troubleshooting ScreensMembrane Test Screen Troubleshooting System Inputs ScreenTroubleshooting System Outputs Screen Select a Component B Restrictor Size Dynamic DosingGeneral Operating Cycle, Dynamic Dosing B Control Range with Properly Sized Restrictor Pressure Too High Pressure Too Low Pressure B PressureAir Flow Switch AFS Function System ErrorsSystem Alarms To Clear Error and RestartSystem Idle Warning Idle System Alarm/Advisory/Record Codes Error CodesUSB Communication Error Alarm TroubleshootingAlarm and Description Cause Solution Communication ErrorEQU2 PreFill Error Alarm and Description Cause Solution SFA1 or SFB1PreMix Error Pneumatic Schematic, page 66 orAlready about equal, verify that com Ratio Low ErrorQDB1 QDA1Linear Sensor Error Alarm and Description Cause Solution QTA1 or QTB1Dose Time Error Leak ErrorStall Up Error Alarm and Description Cause Solution DDA1 or DDB1Diving/Cavitation Error Park ErrorRestrictor Sizes Size Code Orifice Size Dynamic Dosing Restrictor Selection GraphsExample 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 MountingNoise level Technical DataProMix 2KE Metric On-ratio accuracyGraco Information Graco Standard Warranty