Sterling 882.00274.00 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.

Note: When the additive feeder is first powered up, the motor control needs to “warm up” for a few seconds by running the motor until it stabilizes. Subsequent operation will be instantaneous.

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 Parts and Service Department Shipping Information Table of Contents Troubleshooting Safety Symbols Used in this Manual SafetyHow to Use This Manual Wear Safety Glasses and Work Gloves Responsibility General ResponsibilityOperator Responsibility RememberMaintenance Responsibility Reporting a Safety DefectStandard Features Mechanical FeaturesFunctional Description Models Covered in This ManualOptions Electrical FeaturesController Features Accessories Fail Safe Operation Safety Devices and InterlocksSafety Circuit Standards Safety Device Lock-Outs Installation Supply System InstallationUncrating the Equipment Rigging and Placing the Additive FeederControl Relay Connection Main Power ConnectionElectrical Connections Setup Procedures Determining the Desired Feed Rate110 100 Equipment Needed Calibration ProcedureProcedure Examples Observed Feed RatesInitial Start-up Pre-Startup ChecksStarting Up the Additive Feeder Shutting Down the Additive FeederSwitches Indicator LightsOperation Start-upCounter Module Timer ModuleUsed as a Cycle Override Safety Timer Elapsed Time Module Set Point #2 Motor Control Bottom Low Level Regrind Feeder with Proximity SwitchDual Setpoint Control Operation 2 Component Applications Extruder Tracking Installation and Setup Extruder Tracking ControlExtruder Tracking Equation Desired Display Setting Field Control ProgrammingEquation Motor RPM = 25.2 X Auger RPMProgramming for Follower Operation Programming ModeViewing or Changing the Constant Viewing or Changing the Program Minimum Setting Viewing or Changing the Program Maximum SettingExiting Programming Mode and Returning to Run Mode Program Minimum SettingAdditive Feeder Control Factory Defaults Shutting Down the Additive FeederPhotocopy this page for your maintenance records MaintenancePreventative Maintenance Schedule Preventative Maintenance Material Cleanout/ChangeoverCorrective Maintenance Auger Assembly ChangeoverRemoving Auger Assembly Installing Auger AssemblyMotor Brush Replacement Replacement Motor Brush Part NumbersIntroduction TroubleshootingProblem Possible cause Corrective action Additive Feeders Troubleshooting Warranty AppendixOptional Components Technical Specifications Annex B InformationDrawings and Diagrams Additive Feeder Specifications and Overall DimensionsTypical Additive Feeder Controllers SET Point Spare Parts List Exploded Assembly Drawing Parts ListA0541292 Auger Assembly, 1/2 One Component Control Enclosure Parts Identification Two Component Control Enclosure Parts Identification Safety Tag Information Warranty ReturnsAdditive Feeder Safety Tags Returned Material PolicyAdditive Feeder Identification Serial Number Tag Technical AssistanceWorksheet for Charting Feed Rates Photocopy this page for your records