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Related Manuals for Sterling BP810
Summary of Contents for Sterling BP810
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Page 6: Table Of Contents
Start Up and Operation 5-1 Pre-Operational Checklist 5-2 Operation Maintenance 6-1 General Recommendations 6-2 Monthly Maintenance Operations 6-2-1 Drive Belt Tension 6-2-2 Proper Belt Tension 6-2-3 Belt Replacement 6-3 Removal and Replacement of the Screen 6-4 Inspection and Adjustment of Knives 6-5 Removing and Replacing Bed Knives 6-6 Removal and Replacement of Rotating Blades 6-7 Specifications for Resharpening Bed Knives... - Page 8 Removing The Screen Inspection of Knives Bed Knife Specifications Rotor Knife Specifications Cutting Chamber - Vertical Cross Section Cutting Chamber - Longitudal Cross Section Cutting Chamber - Front View Cutting Chamber - Rear View Page viii of 54...
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Page 9: Safety Guidelines
Safety Guidelines Our granulators are designed to provide safe and reliable operation when installed and operated within design specifications, following national and local safety codes. To avoid possible personal injury or equipment damage when installing, operating, or maintaining this granulator, use good judgment and follow these safe practices: Safety Considerations LEARN AND OBEY your company’s safety policy regarding... - Page 10 EAR PROTECTION may be required when operating the machine during granulation of very hard or noisy materials. The Occupational Safety and Health Act of 1970 has established guidelines for Permissible Noise Exposures (OSHA 1910.95) that should be followed. NEVER attempt to operate the granulator unless it is fully assembled with all guards and interlocks in place and functional.
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Page 11: Safety Procedures
For further information on granulator safety, installation, and operation, see the American National Standard for Plastics Machinery Reduction of Plastics B151.11-1982. Cumberland has long recognized the importance of safety and has designed and manufactured its equipment with operator safety as a prime consideration. -
Page 12: Safety Features
NEVER ATTEMPT TO FREE A JAMMED MACHINE BY PLACING HANDS ON ROTOR, ROTOR KNIVES, OR WITHIN THE CUTTING CHAMBER. HANDS MUST BE KEPT CLEAR OF THE ROTATIONAL PATH OF THE ROTOR A block of wood should be used to exert force on the rotor, usually in the direction opposite normal rotation. - Page 13 The upper part of the cutting chamber is protected by the feed hopper, used to insert material to be granulated while the lower part is protected by the screen, and screen support. These components are fixed by a screw knob, unscrewing releases a safety switch key (Figure 1), which cuts off the electric supply to the motor, causing the rotor to stop.
- Page 14 Warning! Wear protective gloves when exposed to knives. Figure 2: Control Panel Start/Stop Push Button Disconnect Switch Page 14 of 54...
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Page 15: General Information
Introduction This family of granulators has been designed to granulate plastic material such as sprues, runners, and small reject parts. The granulator is comprised of an infeed hopper into which the material to be granulated is fed, mounted on a cutting chamber in which a series of rotary and bed knives reduce the material to granules, the size of which is determined by the screen holes. -
Page 16: Safety Symbols Used In This Manual
The Maintenance chapter is intended to serve as a source of detailed assembly and disassembly instructions for those areas of the equipment requiring service. Preventive maintenance sections are included to ensure that your granulator provides excellent, long service. The Troubleshooting chapter serves as a guide for identification of most common problems. - Page 17 2-4-2 Main Components of Standard Granulators (See Figure 3) 1. Infeed hopper 2. Cutting chamber 3. Bin for granulated material 4. Belt drive 5. Control panel 6. Electric Motor Figure 3: Main Components of Standard Granulators 2-4-3 Optional Equipment • Conveyor •...
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Page 19: In The Event Of Shipping Damage
Unpacking and Inspection You should inspect your granulator for possible shipping damage. Thoroughly check the equipment for any damage that might have occurred in transit, such as broken or loose wiring and components, loose hardware and mounting screws, etc. In the Event of Shipping Damage According to the contract terms and conditions of the Carrier, the responsibility of the Shipper ends at the time and place of shipment. - Page 21 drawings, electrical schematics, and manual from the base evacuation area. You can now have the machine lifted from the skid. A forklift is ideal for the purpose, but take care to properly position the forks between the casters and the centrally mounted evacuation pipe from the side of the machine.
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Page 22: Installation
Lifting Before lifting or moving the granulator, check the relative weight shown on the shipping papers and in Figure 4. To facilitate the lifting operation using forklift trucks, the drop box has been removed from the granulator and is packed with any spare parts. -
Page 23: Electrical Connection
water. The granulator should be installed in an inside covered, weather-proof environment and away from any areas where water collects on the floor. Once the granulator is in position, the front panel must be opened in order to insert the bin as illustrated in Figure 6. -
Page 24: Start-Up Checks
Before connecting the power, check that the power cable size and capacity corresponds to the horsepower and amp load indicated on the granulator label and that the disconnect switch is in the OFF position. (See Figure 2.) Unless otherwise specified, the granulator has been wired for 480 volts, 60 Hz, 3 ph. - Page 25 fallen in. The use of heavy gloves is recommended to avoid injury when exposed to the knives in the cutting chamber. NOTE: This operation must be carried out by an operator / mechanical maintenance engineer. Check that the cutting chamber is free from foreign objects as follows: 1.
- Page 26 Figure 8: Removing the Screw Knob 4-4-2 Checking Rotation Direction Check the correct direction of the rotor as follows: 1. Turn the main disconnect switch to “ON”. 2. Pull the Start button until the motor comes up to speed; then 3.
- Page 27 4-4-3 Test the Interlock Switch With the cutting chamber and screen cradle closed and power On, perform the following tests: 1. Push the start button to start the granulator. With the granulator running, loosen the handknob on the front access door to verify the safety interlock switch shuts the machine off.
- Page 28 Once you have safely accessed the cutting chamber, check the current distance between the bed knives and the rotor knives using a feeler gauge. (See Figure 9.) NOTE: The distance set by the manufacturer for normal application is 0.006”-0.008” (0.15-0.20 mm). If the gap between the bed knives and the rotor knives is found to be greater than that, an adjustment must be made.
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Page 29: Start Up And Operation
Pre-Operational Checklist To ensure the granulator is ready for operation, perform the tasks listed on the following pre-operational checklist. Make sure that all electrical and mechanical machine elements are inspected and any defects corrected first. Start Up and Operation Have all installation and preparation instructions been read and followed? Have the granulator operators and all other necessary personnel, such as the cleanout, maintenance and service... -
Page 30: Operation
Operation The granulator can be operated in a vertical top feed position or in a horizontal front feed position. Before starting the granulator, always check for and remove tools or any other objects placed on the granulator. Turn the Power disconnect switch to “ON”, pull the Start button, and release it when the motor has started. -
Page 31: Maintenance
General Recommendations Before carrying out any work on the granulator, carefully read the instructions contained in this manual. NOTE: Only specialist and competent personnel should carry out this operation. All maintenance work must be carried out with the granulator switched off and with the power supply disconnected and locked out. -
Page 32: Monthly Maintenance Operations
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. -
Page 33: Belt Replacement
Figure 11: Belt Tension Chart Belt Cross Section Small O.D. Range 3.65-4.12 4.50-5.60 Deflection = Beltspan 6-2-3 Belt Replacement It is very important to replace all belts at the same time. If the drive belts have to be replaced, follow the procedure in Section 6-2-1 up to Step 6. -
Page 34: Inspection And Adjustment Of Knives
3. Remove the bin. 4. Remove the screw knob that holds the hopper on top of the Remove the screen, keeping it in a horizontal position. (See 5. Figure 12.) 6. Replace the screen with a new one, tighten the screw knob, Figure 12: Removing the Screen Inspection and Adjustment of Knives NOTE: This operation must be performed by a qualified... - Page 35 Before carrying out any maintenance on the cutting chamber, the operator must wear work gloves thick enough to avoid injury to the hands while touching sharp parts or the cutting edges of the blades. To inspect blades, remove the screen by following steps 1-0 in Section 6-3.
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Page 36: Removing And Replacing Bed Knives
10. When adjustment is complete, tighten the lock nuts on the 11. Torque the bed knife 12. Repeat the steps 4-11 to adjust the rear (or down stroke) bed 13. Close the hopper and replace the screen and screen cradle, 14. - Page 37 3. Pivot the in-feed hopper completely back to gain clear access to the cutting chamber, and clear any process material or foreign objects from between the knives. 4. Rotate the rotor so that the rotor knives will not interfere with the removal of the bed knife.
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Page 38: Removal And Replacement Of Rotating Blades
13. Close the machine, following Steps 12-14 in Section 6-4. Removal and Replacement of Rotating Blades NOTE: A qualified operator / maintenance mechanic should perform this operation. Protective gloves must be worn to avoid injury when handling the cutting knives. To remove and replace rotor knives, complete the following procedure: 1. -
Page 39: Specifications For Resharpening Bed Knives
10. Tighten each set of the knife bolts; making sure that the knife is seated against the back heel in the rotor seat. Before torquing the bolts, check that a 0.001” feeler gage cannot fit between the heel and the back of the knife. 11. -
Page 41: Troubleshooting
The following tables list problems that could occur when using the granulator. This general information may help to locate the cause of the problem and allow it to be resolved promptly. When a problem arises, it is advisable to perform the simplest checks before proceeding to more complicated ones, which may subsequently prove unnecessary. - Page 42 Problem Abrasive material Rotor Jamming Excessive infeed material Total or partial obstruction of the screen holes Insufficient belt tension Knives worn Distance between the knives too small or too large Screen holes too small Failure of air conveying system or discharge system Possible Causes Contact the supplier for special...
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Page 43: Electrical Problems
Electrical Problems Problem Machine stops for no Safety switch has stopped power apparent reason Electric motor does not No power start Overload failure Safety switch not working Cutting chamber too full Motor starts but does not Excessive drive belt tension speed up or take a load Motor connected to power source incorrectly... - Page 45 Figure 16: Cutting Chamber – Vertical Cross Section DRAWING CA039060S2 Page 45 of 54...
- Page 46 Figure 17: Cutting Chamber – Longitudal Cross Section DRAWING CA039060S1 Page 46 of 54...
- Page 47 Figure 18: Cutting Chamber – Front View DRAWING CA039060S3 Page 47 of 54...
- Page 48 Figure 19: Cutting Chamber – Rear View DRAWING CA039060S4 Page 48 of 54...
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Page 49: Typical Wiring Diagram
9 Typical Wiring Diagram Page 49 of 54... -
Page 50: Contact Information
DRAWING D05991100000 Page 50 of 54... -
Page 52: Service Notes
Service Notes ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Page 52 of 54...
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