Sterling BP1012, BP1018 Monthly Maintenance Operations, Drive Belt Tension, Proper Belt Tension

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6-2 Monthly Maintenance Operations

6-2-1 Drive Belt Tension

NOTE: This operation should be carried out by an operator / mechanical maintenance engineer.

For the granulator to function correctly, it is extremely important that the drive belt is always tight. Correct tension reduces the load of the rotor bearings and minimizes wear and stretching of the belt. To check and adjust belt tension, carry out the following procedure:

1.Turn off the machine and lockout power by using the disconnect switch, or remove the fuses from the electrical control panel.

2.Remove the belt guard by unscrewing the ten screws that hold it in place.

3.Open the front panel.

4.Remove the bin.

5.Open the rear panel.

6.Loosen the nuts that lock the motor base slide.

7.Loosen the tie rod

8.Adjust the belt tension, turning the tie rods forward.

9.Turn the tie rod to bring the motor square to the belt axis.

10.After the adjustment, lock the nuts again, and close the rear panel, refitting the proper locking latch.

11.Reinsert the bin, close the front panel, refit the belt guard and unlock the power or replace the fuses in the control panel.

6-2-2 Proper Belt Tension

Measure the belt span and divide by 64 to get the allowable belt deflection. With a belt gauge, measure the force it takes to deflect the belt the amount calculated.

NOTE: Check your belt gauge’s instructions for proper scale settings. Belt tension gauges are available from customer service or your belt manufacturer.

Compare the gauge reading with the chart value for the belt cross- section used. (See Figure 14)

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Contents BP1000 Series Granulators Page Sterling Warranty Information Sterling Warranty Information Table of Contents Start Up and Operation Table of Figures Viii Safety Guidelines Safety ConsiderationsPage Safety Procedures Guidelines for Moving the GranulatorClearing a Jammed Cutting Chamber Safety Features Fitted On the Granulator Safety FeaturesOpening the Granulator Safety SwitchSound Enclosure Wear protective gloves when exposed to knivesModel Motor Power Noise Test Method Using This Manual General InformationIntroduction Description Safety Symbols Used in This ManualOptional Equipment Main Components of Standard GranulatorsModel Unpacking and Inspection Shipping InformationEvent of Shipping Damage If the Shipment is Not CompleteIf the Shipment is Not Correct ReturnsUncrating Your Granulator Especially the Hopper Installation LiftingPositioning the Granulator Inserting the Bin Electrical ConnectionChecking the Cutting Chamber Start-Up ChecksRemoving the Screw Knob Checking Rotation DirectionChecking Knife Position Test the Interlock SwitchesChecking the Knife Gap Start Up and Operation Pre-Operational ChecklistNever push material into the hopper with hands OperationGeneral Recommendations MaintenanceMonthly Maintenance Operations Drive Belt TensionProper Belt Tension Belt Replacement Removal and Replacement of the ScreenRemoving the Screen Inspection and Adjustment of KnivesPage Inspection of Knives Removing and Replacing Bed KnivesRemoval and Replacement of Rotating Blades Specifications for Re-sharpening Bed Knives Bed Knife Specifications Specifications for Re-sharpening Rotor KnivesGeneral Problems 7TroubleshootingProblem Possible Causes Possible Remedies Electrical Problems Spare Parts Recommended Spare Parts ListCutting Chamber Vertical Cross Section Cutting Chamber Longitudal Cross Section Cutting Chamber Front View Cutting Chamber Rear View Typical Wiring Diagram Parts Department Contact InformationService Notes Warranty