Sterling D48160s manual Introduction, What is a GRANULATOR?

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INTRODUCTION

WHAT IS A GRANULATOR?

A GRANULATOR is a machine that is designed to size-reduce plastic materials to chips or granulate. The machine can be fed either by hand through a hopper opening in the front or automatically from a special hopper opening, which can be specially designed.

DISPOSAL OF THE PLASTIC GRANULATE takes place after it passes through the screen and drops into the discharge area, where it is removed from the machine by a discharge blower and conveyed by air to a remote side of the machine. This discharge blower is available as optional equipment.

THE GRANULATING OF PLASTIC is achieved by the cutting action of sharp rotating knives in close adjustment to one or more stationary knives called bed knives. The rotary knife assembly is called a rotor. You will see the references to it as you read through this manual. There are two bed knives in the machines covered by this manual. The heavy-duty rotor and bed knife assemblies, combined with the screen (explained below) and their enclosing cutting chamber are the heart of the granulator.

THE SIZE OF THE GRANULATE resulting from the cutting action described is controlled by a screen, which fits tightly around the rotary knives in the cutting chamber. This screen retains the plastic granulate until it is reduced to a small enough size to fall through the holes in the screen. Screens with various hole sizes are available for the granulator. The standard screen hole size for the X-Series is 3/8” diameter. Screens are available with either smaller or larger hole sizes. For a given machine, the throughput capacity of the granulator is dependent upon the size of the screen utilized.

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Contents Sterling,Inc Refer to this Sheet When Ordering Parts Sterling, IncTable of Contents Settings and Adjustments Topic SECTION/PAGE Table of Contents Adjustable Rotor Knives…………………………………………………………………4-35 OperationMaintenance From previous Maintenance TroubleshootingParts Lists and Drawings Page What is a GRANULATOR? IntroductionLearn Machine Safety SectionFollow the Safety Instructions Rotating Knives Safety PlateOpening Hopper Safety Plate Guards Safety Plate Jackscrew Reversing OperationSafety Instruction Plate Hazardous Voltage Safety PlateRotating Knives Safety Plate Motor Rotation Safety PlateSafety Clothing & Practices Wear Protective Clothing Keep Your Work Area SafeKeep CO-WORKERS OFF the Machine Machine Opening Devices Be Sure the Rotor is Motionless Before Opening MachineSection Open the Cutting ChamberClear the JAM Restart the GranulatorMachine and Controls BP 2400 Series Granulator Right Front Quarter View BP 2400 Series Granulator Left Rear Quarter View Section Overview Uncrate the GranulatorSection Move the Granulator to ITS Work Site Allow Adequate Work SpaceLevel the Granulator Remove the Protective Coating Electrical Wiring SET UP the Machine Functions Section Check for Mechanical InterferencesCheck Rotation of Motors Interlock Switch Test Procedure Alternate Test for the Interlock SwitchesInstallation Alternate Test for the Interlock Switches from previous Test the Zero Speed SensorLubrication Test the Zero Speed SensorSettings and Adjustments Open the Cutting Chamber Interlock Release the Cutting Chamber FastenersSee -10 page 87 for Cutting Chamber Opening Instructions Install the Rotor Locating PIN Loosen the Mounting Screws Remove the BED KnivesRemove the First Knife Clamp or Shield Replace the Upstroke BED Knife Replace the Upstroke Knife ClampGAP Adjustment Tips Replace the Downstroke BED KnifeReplace the Downstroke Knife Shields Check the BED KnivesMeasure the Knife GAP Check the Knife GAPSET the Downstroke Knife Shield Finalize Installation of Upstroke BED Knife Tighten the Screws to Final TorqueSee -11 page 88 for Cutting Chamber Closing Instructions Close the Cutting Chamber Safety Interlock Fasten the Cutting ChamberBasic Facts about the Knives See -10 page 87 for Cutting Chamber Opening Instructions Lock the Rotor Remove the Mounting ScrewsRemove the Rotor Knives Clean Parts for Reassembly PhotoGAP Adjustment Tips Measure the Knife GAPCheck the Knife GAP Tighten the Screws to Final TorqueFasten the Cutting Chamber Remove the Drive Guard Cover Install the Matched Belts Inspect the Drive BeltsRemove the Belts Tighten the Belt TensionCheck the Pulley Alignment Measure the Belt SpanCalculate the Allowable Belt Deflection Measure the Deflection ForceAdjust the Belt Tension Compare Measured Force to Recommended ForceTighten the Motor Base Bolts Replace the Drive Guard Cover Setting and Adjusting the Chamber Jackscrew Cutting Chamber Open Setpoint Adjust the Jackscrew OPEN-POSITION Limit Switch SET the Jackscrew CLOSED-POSITION Limit Switch If the Motor Stops Before the Cutting Chamber ClosesSET & Test the Mounting Bracket Limit Switch SET the Jackscrew CLOSED-POSITION LimitChamber Stops Before IT Closes but Motor Continues to RUN From previous Close the Cutting Chamber Safety Interlock Retract the Screen Cradle Retainers Cradle Open Position Adjust the Cradle OPEN-POSITION Limit Switch Check the Cradle CLOSED-POSITION Switch Adjust the Cradle CLOSED-POSITION Limit Switch Close the Screen Cradle RetainersClose the Screen Cradle Interlock Adjust the Sensor Position Zero Speed SensorZero Speed Sensor Operation Control CircuitRotor Knife Installation Into Fixture Knife Length SettingRotor Knife Preparation Knife Length SETTING-INSPECTION Adjustable Rotor Knife InstallationHydraulic Opening Position Switches Hydraulic Pump OperationOperation Discharge AIR Adjustment Check the Motor Rotation DirectionRUN the Motor Cleaning the Discharge Transition Shut Down the MachineSafely Clearing a Jam Maintenance Periodic Maintenance Schedule Check Daily Weekly MonthlyKnife Screw Torque Belt TensionScreen Condition Infeed Flap Condition Upper Chamber Pivot ARM-SCREWSOpen the Screen Cradle Interlock Retract the Screen Cradle RetainersSee -12 page 90 for Screen Cradle Lowering Instructions Remove the Screen Replace the ScreenMaintenance Close the Screen Cradle Interlock Cutting Chamber Access Open the Cutting Chamber with Jackscrews Open the Cutting Chamber with HydraulicsClose the Cutting Chamber with Jackscrews Fasten the Cutting Chamber Lower Raising the Screen Cradle with Jackscrews Rotor Knife Sharpening BED Knife Sharpening Troubleshooting Chart Test EquipmentLocating Trouble Section Mechanical Faults Problem Probable Cause Remedy Electrical FaultsBP2400 Series Parts List and Drawings 100 Parts Identification Drawing No. A-48050 Sheet 3 Parts Identification Drawing No. A-48050 Sheet 4 Parts Identification Drawing No. A-48150 Sheet 1 Parts Lists and Drawings Parts Identification Drawing No Sheet 1 Parts Identification Drawing No -460 Sheet 1 Wiring Diagram Drawing No. A-399598 Sheet 1 108 Drawing No -1 Sheet 1 Wiring Diagram for Hydraulics Drawing No. D-499061 Sheet 1 Wiring Drawing No. D-499044 Sheet 1 112 113