Sterling D48160s manual BED Knife Sharpening

Page 93

MAINTENANCE

BED KNIFE SHARPENING

Each bed knife is provided with two cutting edges. When the exposed edges become blunt, the knives can be turned over and repositioned to present the new cutting edges.

It is not necessary to grind bed knives to the closely matched tolerance of the rotor knives and as with the rotor knives, small nicks in the cutting edges will not seriously affect knife cutting efficiency. Bed knives smaller than the minimum dimension shown must be replaced along with their fasteners.

It is important to note that the minimum dimensions given for the rotor knife and bed knife cannot be combined simultaneously to produce a cutting combination. The grinding charts shown below and on the previous page indicate the rotor knife and bed knife combinations that will work for each type of rotor knife.

EXAMPLE: A 55° land rotor knife with a 4.200 inch " A " dimension will work only with bed knives having an "E" dimension of 0.730 or more.

NOTE: Replacement knife sets and knife re-sharpening services are available from Cumberland Engineering. Contact the Customer Service Department at 508-399- 6400 or 800-229-2919.

SECTION 6-15

Knife Sharpening

93

Image 93
Contents Sterling,Inc Sterling, Inc Refer to this Sheet When Ordering PartsTable of Contents Settings and Adjustments Topic SECTION/PAGE Table of Contents Operation Adjustable Rotor Knives…………………………………………………………………4-35From previous MaintenanceTroubleshooting MaintenanceParts Lists and Drawings Page Introduction What is a GRANULATOR?Section Learn Machine SafetyRotating Knives Safety Plate Follow the Safety InstructionsOpening Hopper Safety Plate Jackscrew Reversing Operation Guards Safety PlateHazardous Voltage Safety Plate Safety Instruction PlateMotor Rotation Safety Plate Rotating Knives Safety PlateSafety Clothing & Practices Wear Protective Clothing Keep Your Work Area SafeKeep CO-WORKERS OFF the Machine Be Sure the Rotor is Motionless Before Opening Machine Machine Opening DevicesOpen the Cutting Chamber SectionRestart the Granulator Clear the JAMMachine and Controls BP 2400 Series Granulator Right Front Quarter View BP 2400 Series Granulator Left Rear Quarter View Uncrate the Granulator Section OverviewSection 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 Alternate Test for the Interlock Switches Interlock Switch Test ProcedureInstallation Test the Zero Speed Sensor Alternate Test for the Interlock Switches from previousTest the Zero Speed Sensor LubricationSettings 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 Knife Clamp Replace the Upstroke BED KnifeReplace the Downstroke BED Knife GAP Adjustment TipsReplace 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 Fasten the Cutting Chamber Close the Cutting Chamber Safety InterlockBasic Facts about the Knives See -10 page 87 for Cutting Chamber Opening Instructions Lock the Rotor Remove the Mounting ScrewsRemove the Rotor Knives Photo Clean Parts for ReassemblyMeasure the Knife GAP GAP Adjustment TipsTighten the Screws to Final Torque Check the Knife GAPFasten the Cutting Chamber Remove the Drive Guard Cover Inspect the Drive Belts Install the Matched BeltsRemove the Belts Tighten the Belt TensionMeasure the Belt Span Check the Pulley AlignmentCalculate 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 If the Motor Stops Before the Cutting Chamber Closes SET the Jackscrew CLOSED-POSITION Limit SwitchSET & 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 Zero Speed Sensor Adjust the Sensor PositionZero Speed Sensor Operation Control CircuitRotor Knife Installation Into Fixture Knife Length SettingRotor Knife Preparation Adjustable Rotor Knife Installation Knife Length SETTING-INSPECTIONHydraulic Pump Operation Hydraulic Opening Position SwitchesOperation Discharge AIR Adjustment Check the Motor Rotation DirectionRUN the Motor Shut Down the Machine Cleaning the Discharge TransitionSafely Clearing a Jam Maintenance Check Daily Weekly Monthly Periodic Maintenance ScheduleKnife Screw Torque Belt TensionScreen Condition Upper Chamber Pivot ARM-SCREWS Infeed Flap ConditionRetract the Screen Cradle Retainers Open the Screen Cradle InterlockSee -12 page 90 for Screen Cradle Lowering Instructions Replace the Screen Remove the ScreenMaintenance Close the Screen Cradle Interlock Cutting Chamber Access Open the Cutting Chamber with Hydraulics Open the Cutting Chamber with JackscrewsClose 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 Electrical Faults Problem Probable Cause RemedyBP2400 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