Sterling BP818 - Manuals

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 elec...

Warning! Wear protective gloves when exposed to knives. Figure 2: Control Panel Start/Stop Push Button Disconnect Switch Page 14 of 54

2 General Information 2-1 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 ...

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 ser...

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 6 5 3 2 1 4 2-4-3 Optional Equipment • Conveyor • Other screen hole sizes...

3 Shipping Information 3-1 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. 3-2 In the E...

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. ...

4 Installation 4-1 Lifting Important! 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. When...

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. Figure 6: Inserting the Bin 4...

!!Caution!! 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 ...

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. Turn off and lock...

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 push the button to stop the granulator motor. 3. Check via the appropr...

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...

5 Start Up and Operation 5-1 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. ; Have all install...

5-2 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 r...

6 Maintenance 6-1 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...

Figure 11: Belt Tension Chart Belt Cross Section Small O.D. Range ∗ Deflection Force Lbs/V-belt Run-In Normal Running 3VX 3.65-4.12 4.50-5.60 6.4 7.5 5.7-4.4 6.6-5.1 Deflection = Beltspan 64 Belt Span Belt Deflection Guage 6-2-3 Belt Replacement Important! It is very important to replace all belts a...

3. Remove the bin. 4. Remove the screw knob that holds the hopper on top of the cutting chamber. Carefully lower the screen cradle assembly, resting it on the base. Remove the screen, keeping it in a horizontal position. (See 5. Figure 12.) 6. Replace the screen with a new one, tighten the screw kno...

Important! 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. Then, proceed...

10. When adjustment is complete, tighten the lock nuts on the adjustment screws. 11. Torque the bed knife and bed knife shield bolts to 95 lbs./ft. (13 Kgm., 128 Nm) using a torque wrench. 12. Repeat the steps 4-11 to adjust the rear (or down stroke) bed knife. Turn the rotor slowly for one complete...

13. Close the machine, following Steps 12-14 in Section 6-4. 6-6 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 kn...

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. Torque the rotor knife bolts to 100 Lbs./ft. (14 Kgm, 135 Nm). ...

7 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 ...

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