Sterling D48160s manual Rotor Knife Sharpening

Page 92

MAINTENANCE

ROTOR KNIFE SHARPENING

The rotor knives must be sharpened to within 0.003" (0.076 mm) of each other. Greater dimensional variations prevent the proper setting of the knife gap and may create other serious complications.

Grinding the cutting edge until it is free of nicks can be wasteful. It is not harmful to allow small nicks to remain in the cutting edge

.

WARNING

Do not install rotor knives, which are smaller than the minimum dimension shown because the fasteners, which secure these knives will interfere with the cutting circle. The rotor will not be able to rotate and the bed knives will be damaged.

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 following page indicate the rotor knife and bed knife combinations that will work for each type of rotor knife.

EXAMPLE: A keen edge rotor knife with 4.200 inch

"A " dimension will work only with bed knives which have "D" dimensions of 0.790" or greater.

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 6-14

Knife Sharpening

92

Image 92

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 previousMaintenance 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 Keep CO-WORKERS OFF the Machine Wear Protective ClothingKeep Your Work Area Safe 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 GranulatorLevel the Granulator Section Move the Granulator to ITS Work SiteAllow Adequate Work Space Remove the Protective Coating Electrical Wiring Check Rotation of Motors SET UP the Machine FunctionsSection Check for Mechanical Interferences 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 See -10 page 87 for Cutting Chamber Opening Instructions Open the Cutting Chamber InterlockRelease the Cutting Chamber Fasteners Install the Rotor Locating PIN Remove the First Knife Clamp or Shield Loosen the Mounting ScrewsRemove the BED Knives Replace the Upstroke BED Knife Replace the Upstroke Knife ClampGAP Adjustment Tips Replace the Downstroke BED KnifeReplace the Downstroke Knife Shields Check the BED KnivesSET the Downstroke Knife Shield Measure the Knife GAPCheck the Knife GAP See -11 page 88 for Cutting Chamber Closing Instructions Finalize Installation of Upstroke BED KnifeTighten the Screws to Final Torque Close the Cutting Chamber Safety Interlock Fasten the Cutting ChamberBasic Facts about the Knives See -10 page 87 for Cutting Chamber Opening Instructions Remove the Rotor Knives Lock the RotorRemove the Mounting Screws 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 ForceTighten the Motor Base Bolts Adjust the Belt TensionCompare Measured Force to Recommended Force 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 ClosesChamber Stops Before IT Closes but Motor Continues to RUN SET & Test the Mounting Bracket Limit SwitchSET the Jackscrew CLOSED-POSITION Limit 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 Close the Screen Cradle Interlock Adjust the Cradle CLOSED-POSITION Limit SwitchClose the Screen Cradle Retainers Adjust the Sensor Position Zero Speed SensorZero Speed Sensor Operation Control CircuitRotor Knife Preparation Rotor Knife Installation Into FixtureKnife Length Setting Knife Length SETTING-INSPECTION Adjustable Rotor Knife InstallationHydraulic Opening Position Switches Hydraulic Pump OperationOperation RUN the Motor Discharge AIR AdjustmentCheck the Motor Rotation Direction Cleaning the Discharge Transition Shut Down the MachineSafely Clearing a Jam Maintenance Periodic Maintenance Schedule Check Daily Weekly MonthlyScreen Condition Knife Screw TorqueBelt Tension 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 Locating Trouble Troubleshooting ChartTest Equipment 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