Sterling 882.00274.00 Functional Description, Models Covered in This Manual, General Description

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Chapter 2: Functional Description

2-1 Models Covered in This Manual

This manual provides operation, installation, and maintenance instructions for 1 and 2 component additive feeders. Model numbers are listed on the serial tag. Make sure you know the model and serial number of your equipment before contacting the manufacturer for parts or service.

Our additive feeders are designed to precisely feed up to two components before being used in the injection molding, blow molding or extrusion processes. Additive Feeders are configured to meet the specific requirements stated by the Customer at the time of purchase.

2-2 General Description

Our additive feeder is a highly accurate unit designed to feed one or two additives into a stream of virgin plastic pellets prior to injection molding, blow molding, or extrusion. Such additives may include color, regrind, or other free-flowing pelletized or granular materials. The additive feeder may also be appropriate for other applications. Consult the manufacturer for additional information.

2-3 Standard Features

Mechanical Features

Transport Tube

•Stainless steel augers available in ½”, ¾”, 1”, 1-1/4” and 1-1/2” sizes

•Augers/insert assemblies are interchangeable without tools

•UHMW polyethylene auger insert is durable and easily cleaned

•Calibration hatch opens without tools

•Cleanout hatch below the flood zone opens without tools and allows the supply hopper to dump completely.

•Lightweight aluminum casting

Main Throat

•Low profile design adds only 6 inches to supply system headroom requirements

•Accomodates one or two transport assemblies

•Sturdy steel construction

Supply Hopper

•1-cubic-foot capacity (45 pounds @ 45 lb./cubic foot)

•Design based on dynamic/static material flow characteristics

•Angled hopper geometry allows use with 60º machine supply hoppers

•Easy, fast, and complete cleanout

•Sight glasses give visual level indication

•Manual fill cover standard

Additive Feeders

Chapter 2: Functional Description

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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 General Responsibility ResponsibilityRemember Operator ResponsibilityReporting a Safety Defect Maintenance ResponsibilityModels Covered in This Manual Standard FeaturesMechanical Features Functional DescriptionOptions Electrical FeaturesController Features Accessories Fail Safe Operation Safety Devices and InterlocksSafety Circuit Standards Safety Device Lock-Outs Rigging and Placing the Additive Feeder InstallationSupply System Installation Uncrating the EquipmentControl Relay Connection Main Power ConnectionElectrical Connections Determining the Desired Feed Rate Setup Procedures110 100 Equipment Needed Calibration ProcedureProcedure Observed Feed Rates ExamplesShutting Down the Additive Feeder Initial Start-upPre-Startup Checks Starting Up the Additive FeederStart-up SwitchesIndicator Lights OperationCounter 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 Control Extruder Tracking Installation and SetupExtruder Tracking Equation Motor RPM = 25.2 X Auger RPM Desired Display SettingField Control Programming EquationProgramming for Follower Operation Programming ModeViewing or Changing the Constant Program Minimum Setting Viewing or Changing the Program Minimum SettingViewing or Changing the Program Maximum Setting Exiting Programming Mode and Returning to Run ModeShutting Down the Additive Feeder Additive Feeder Control Factory DefaultsPhotocopy this page for your maintenance records MaintenancePreventative Maintenance Schedule Material Cleanout/Changeover Preventative MaintenanceInstalling Auger Assembly Corrective MaintenanceAuger Assembly Changeover Removing Auger AssemblyReplacement Motor Brush Part Numbers Motor Brush ReplacementIntroduction TroubleshootingProblem Possible cause Corrective action Additive Feeders Troubleshooting Appendix WarrantyOptional Components Annex B Information Technical SpecificationsAdditive Feeder Specifications and Overall Dimensions Drawings and DiagramsTypical Additive Feeder Controllers SET Point Exploded Assembly Drawing Parts List Spare Parts ListA0541292 Auger Assembly, 1/2 One Component Control Enclosure Parts Identification Two Component Control Enclosure Parts Identification Returned Material Policy Safety Tag InformationWarranty Returns Additive Feeder Safety TagsTechnical Assistance Additive Feeder Identification Serial Number TagPhotocopy this page for your records Worksheet for Charting Feed Rates