Sterling AF-XXX specifications Calibration Procedure, Equipment Needed

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Calibration Procedure

This procedure allows the operator to precisely adjust additive feed rates.

Caution! Never put hands or tools in or near the auger assembly when power is connected.

Do not wear gloves or loose clothing during calibration. The auger is exposed when the calibration or cleanout hatches are open.

Equipment Needed:

•Scale

•Sample container

•Timer- stopwatch, watch/clock w/second hand

Procedure

1.Close cleanout and calibration hatches.

2.Fill the additive supply hopper.

3.Weigh the empty sample container.

4.Swing open the calibration hatch near the main throat.

5.Set the controller to a desired RPM.

6.Place the sample container below the calibration hatch.

7.Hold the three-position motor switch in the Manual position for about a minute. This lets the new setpoint stabilize and fills the auger flights with material. Discard the first sample.

8.Position the empty scale container below the calibration hatch and hold the three- position motor switch in the Manual position for exactly one minute.

Note: If your additive feeder is equipped with the timer option, set the timer to one minute and put the three-position switch in the Manual position. Operation will automatically stop after one minute.

9.Weigh the sample container. Subtract the weight of the container and multiply by 60 to determine the pounds per hour feed rate.

10.Adjust the auger rpm and repeat the calibration process until the desired feed rate is achieved.

Note: To speed the calibration procedure, reduce trial and error auger rpm settings and zero in on the desired feed rate. Chart the calculated feed rates from a few rpm settings on graph paper. Draw a straight line between the coordinates to establish a customized feed rate curve for the actual operating conditions. A sample graph is provided on the next page; graph paper is included in the back of this manual for use with your feeding processes.

Additive Feeders

Chapter 3: Installation

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Contents SF Series Additive Feeders Shipping Information Table of Contents Program Parameter Descriptions How to Use This Manual SafetySafety Symbols Used in this Manual Wear Safety Glasses and Work Gloves General Responsibility ResponsibilityRemember Operator ResponsibilityMaintenance Responsibility Additive Feeder Safety TagsReporting a Safety Defect Models Covered in This Manual Standard FeaturesMechanical Features Functional DescriptionController Features Electrical FeaturesOptions Safety Devices and Interlocks AccessoriesSafety Device Lock-Outs Safety Circuit StandardsFail Safe Operation Rigging and Placing the Additive Feeder InstallationSupply System Installation Uncrating the EquipmentElectrical Connections Main Power ConnectionControl Relay Connection Determining the Desired Feed Rate Setup Procedures110 100 Procedure Calibration ProcedureEquipment Needed Observed Feed Rates ExamplesShutting Down the Additive Feeder Initial Start-upPre-Startup Checks Starting Up the Additive FeederStart-up Timer ModuleUsed as a Cycle Override Safety Timer OperationElapsed Time Module Counter ModuleField Control Programming Injection Molding ApplicationsInjection Molding Control Relay ConnectionJP1 Program Enable Jumper Resetting the Unit to Un-Programmed StateProgramming Step by Step Guide Additive Feeders Operation Injection Mode Application Notes Extruder Tracking Control Extrusion ApplicationsExtruder Tracking Equation Extruder Tracking Installation and SetupParameter-Selection Mode Running ModeValue Mode Resetting the Unit to Un-Programmed State Extruder Tracking Control Application Notes Input Pulse Signal RequirementsMinimum Input Pulse Rate Minimum and Maximum Percent Setpoints Maximum Input Pulse RateDefining Program Parameters Program Parameter DescriptionsMode 1 Default to Zero Parameter 19 Power-up Value Parameter 35 Signal Input 2 S2 Input Configuration Parameter 36 Signal Input 2 S2 Setpoint Preventative Maintenance Schedule MaintenancePhotocopy this page for your maintenance records Material Cleanout/Changeover Preventative MaintenanceInstalling Auger Assembly Corrective MaintenanceAuger Assembly Changeover Removing Auger AssemblyMotor Brush Replacement Problem Possible cause Corrective action TroubleshootingIntroduction Problem Possible cause Corrective action Additive Feeders Troubleshooting Appendix Technical SpecificationsAnnex B Information Additive Feeder Specifications and Overall Dimensions Drawings and DiagramsTypical Additive Feeder Controllers Exploded Assembly Drawing Parts List Spare Parts ListDetail # Part number Part/assembly description One Component Control Enclosure Parts Identification Credit Returns Safety Tag InformationWarranty Returns Returned Material PolicyCompany Logo Additive Feeder Identification Serial Number TagSterling, Inc Th Street New Berlin, WI Technical AssistanceWorksheet for Charting Feed Rates