Sterling Plumbing Product BP1012 User Manual

$30.00  
Operation and Installation Manual  
BP1000 Series Granulators  
Models BP1012 and BP1018  
Important! Read Carefully Before Attempting to Install or Operate Equipment  
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Sterling Warranty Information  
Thank you for your purchase of your new BP1000 Series Granulator. We are confident that you  
will have excellent results and trouble-free operation with this machine.  
When the machine arrives at your plant, inspect it carefully for shipping damage before  
uncrating and immediately report any damage to your transportation company. All shipments are  
FOB South Attleboro, Massachusetts.  
Customer Satisfaction Warranty Program for BP1000 Series Granulators:  
The terms and conditions of the warranty set forth are for one (1) year from the original date of  
purchase by the original purchaser.  
Sterling warrants to the original purchaser the product and/or goods to which this disclaimer is  
attached, and manufactured by us, to be free from defects in material and workmanship under  
normal use and service. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER  
WARRANTIES EXPRESSED OR IMPLIED, INCLUDING WARRANTIES OF MERCHANT  
ABILITY AND FITNESS FOR A PARTICULAR PURPOSE, AND ALL OTHER  
OBLIGATIONS AND LIABILITIES ON OUR PART.  
This warranty shall not apply to any goods or product manufactured by us which has been  
subject to accident, negligence, alteration of any kind, abuse, or misuse. We further make no  
warranty whatsoever in respect to accessories or parts not supplied by us. Any warranty of any  
nature shall apply only to an “original purchaser” which shall be deemed to mean that person or  
entity for whom the goods and/or product were originally ordered and installed.  
We neither assume nor authorize any person to assume for us any liability in connection with the  
sale or use of the products and goods sold hereunder, and shall not be responsible for damages  
for which a purchaser may be liable to other persons, damages to property, or injuries to any  
other persons.  
Our sole obligation under this warranty shall be limited to replacing, repairing, or exchanging  
any part or parts of goods and/or products sold which we determine are defective under normal  
use and service within one (1) year of date of installation by the original purchaser. We shall not  
be liable for any loss or damage resulting directly or indirectly from the use or loss of the goods  
and/or products purchased. In no event shall we be liable for any general, direct, consequential,  
incidental, or special damages of any kind.  
We do not warrant any of our products that are installed in other machines or apparatus as  
meeting requirements of any safety code of any nature. The purchaser assumes all risks and  
liabilities resulting from the installation and use of product sold by us in combination with other  
machines or apparatus.  
Page iii of 53  
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Sterling Warranty Information  
We warrant our product to be of the kind and quality quoted, and no other warranty except of  
title shall be implied. Our company shall repair or replace, at our discretion, any manufactured  
item on your BP1000 Series Granulator without charge FOB factory, within one (1) year after  
date of original purchase, which is proved to be defective when shipped. Claims for labor or  
consequential damages are not allowed.  
Excluded from the above are knives, screens, and belts. Purchased items, including electrical  
components, motors, etc., shall carry the warranty of the supplier and no extension of that  
warranty is allowed.  
Refer to this manual for assistance in installing and maintaining a highly efficient machine.  
Questions regarding areas that are not covered in the manual should be referred to the customer  
service manager at the factory at (800) 229-2919.  
Page iv of 53  
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Table of Contents  
1 Safety Considerations  
9
1-1 Safety Guidelines  
1-2 Safety Procedures  
9
11  
1-2-1 Guidelines for Moving the Granulator  
1-2-2 Clearing a Jammed Cutting Chamber  
1-3 Safety Features  
11  
11  
12  
12  
13  
14  
1-3-1 Safety Features Fitted On the Granulator  
1-3-2 Opening the Granulator  
1-3-3 Sound Enclosure  
2 General Information  
17  
2-1 Introduction  
17  
17  
18  
18  
18  
19  
19  
2-2 Using This Manual  
2-3 Safety Symbols Used in This Manual  
2-4 Description  
2-4-1 Technical Data  
2-4-2 Main Components of Standard Granulators  
2-4-3 Optional Equipment  
3 Shipping Information  
21  
3-1 Unpacking and Inspection  
3-2 In the Event of Shipping Damage  
3-3 If the Shipment is Not Complete  
3-4 If the Shipment is Not Correct  
3-5 Returns  
21  
21  
21  
22  
22  
22  
3-6 Uncrating Your Granulator  
4 Installation  
24  
4-1 Lifting  
24  
24  
25  
26  
26  
27  
28  
28  
4-2 Positioning the Granulator  
4-3 Electrical Connection  
4-4 Start-Up Checks  
4-4-1 Checking the Cutting Chamber  
4-4-2 Checking Rotation Direction  
4-4-3 Test the Interlock Switches  
4-4-4 Checking Knife Position  
Page v of 53  
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5 Start Up and Operation  
30  
30  
31  
5-1 Pre-Operational Checklist  
5-2 Operation  
6 Maintenance  
32  
6-1 General Recommendations  
32  
33  
33  
33  
34  
34  
35  
37  
38  
39  
40  
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  
6-8 Specifications for Resharpening Rotor Knives  
7 Troubleshooting  
41  
41  
43  
7-1 General Problems  
7-2 Electrical Problems  
8 Spare Parts  
44  
44  
8-1 Table 1: Recommended Spare Parts List  
9 Typical Wiring Diagram  
10 Contact Information  
49  
50  
Page vi of 53  
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Table of Figures  
1.  
2.  
Safety Switch  
13  
14  
15  
15  
16  
19  
20  
23  
25  
26  
27  
29  
32  
34  
Control Panel  
3.  
Noise Test Specifications  
Average Sound Levels  
Noise Test Method  
4.  
5.  
6.  
Main Components of Standard Granulators  
Overall Dimensions and Weights  
Lifting the Granulator  
Inserting the Bin  
7.  
8.  
9.  
10.  
11.  
12.  
13.  
14.  
Electrical Connections  
Removing the Screw Knob  
Checking the Knife Gap  
Periodic Maintenance Table  
Belt Tension Chart  
Page vii of 53  
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15.  
16.  
17.  
18.  
19.  
20.  
21.  
22.  
Removing The Screen  
35  
37  
40  
40  
45  
46  
47  
48  
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 53  
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1
Safety Considerations  
1-1  
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:  
X LEARN AND OBEY your company’s safety policy regarding  
granulating equipment.  
X MOVING OR LIFTING THE GRANULATOR: Although  
our equipment is built and engineered for great ruggedness in  
operation, care must be taken when moving the machine along  
the floor or lifting it. Damage may occur to sheet metal covers,  
electrical cabinets, or small brackets if pressure is applied to  
them when moving the granulator. When lifting the granulator,  
be certain of total machine weight and the capability of the  
lifting equipment. (See the Granulator Specification Sheets for  
machine weights and dimensions.)  
X GRANULATOR LOCATION: Adequate area for routine  
maintenance should be provided in order to open the machine  
for knife, screen, or cleanout service. Proper service area  
clearances also should allow people who are working on the  
machine to be clearly visible to others, thereby reducing the  
potential safety hazards.  
X SAFE HOUSEKEEPING: The work area must be kept clean  
and uncluttered during periods of operation or maintenance. No  
hand tools or other metal objects should be left on or around  
the machine. Any tools or other metal objects which  
mistakenly fall into the hopper feed opening can cause severe  
damage to internal cutting chamber and screen chamber  
components.  
X SAFETY GLASSES OR A FACE SHIELD MUST  
ALWAYS BE WORN when servicing or operating the  
machine. Although our machines are designed for the  
maximum in flyback control, caution must be used when  
operating near the hopper feed opening in order to guard  
against unexpected material flyback.  
Page 9 of 53  
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X 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.  
X NEVER attempt to operate the granulator unless it is fully  
assembled with all guards and interlocks in place and  
functional.  
X OBSERVE all danger, warning, caution and safety labels on  
the equipment.  
X Upon completion of any machine maintenance, be certain ALL  
SAFETY GUARDS AND COVERS are securely and  
properly fastened prior to resuming machine operation. All  
fasteners must be in place and properly tightened. ANY  
SHORTCUTS MAY RESULT IN INJURY TO  
PERSONNEL OR DAMAGE TO EQUIPMENT.  
X NEVER wear any loose fitting clothes, neckties, or dangling  
items such as earrings, belts, or shoestrings. Jewelry, such as  
wristwatches, bracelets, or rings should NEVER be worn. Long  
hair must be tied back or placed in a tight fitting hairnet.  
NEVER lean against or rest hands or feet on the granulator  
when it is in operation or open for maintenance. NEVER stand  
on the granulator when it is in operation.  
X ROTATION OF MOTORS: All rotating items in the  
granulator are clearly marked on the machine. Always check  
for proper rotation of motors.  
X ELECTRICAL GROUNDING: All electrical equipment on  
the granulator must be grounded in accordance to all local  
codes and Article 250 of the National Electric Code.  
X ALWAYS DISCONNECT AND LOCKOUT the main  
electrical power to the granulator before performing any  
service.  
X SAFETY INTERLOCKS MUST NOT BE BYPASSED.  
The mechanical and electrical safety interlocks ensure the  
safety of personnel. They should never be tampered with or  
removed for ANY reason. They should be checked frequently  
by a qualified mechanic for proper operation.  
X NEVER modify the machine configuration or any individual  
component without written consent from Sterling Corp.  
Page 10 of 53  
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For further information on granulator safety, installation, and  
operation, see the American National Standard for Plastics  
MachineryGranulators, Pelletizers, and Dicers Used for Size  
Reduction of PlasticsConstruction, Care, and Use. ANSI  
B151.11-1982.  
Sterling has long recognized the importance of safety and has  
designed and manufactured its equipment with operator safety as a  
prime consideration. We expect you, as a user, to abide by the  
foregoing recommendations in order to make operator safety a  
reality.  
SAFETY IS NO ACCIDENT  
1-2  
Safety Procedures  
1-2-1 Guidelines for Moving the Granulator  
To lift and move the granulator safely and correctly, cover any  
sharp corners or edges, and use the type of equipment that has the  
most appropriate features and capacity.  
Before lifting, check that there are no items that could fall during  
lifting.  
Before positioning the granulator, check that the floor is level and  
is strong enough to support the load, that there is adequate space in  
the installation area to allow the movement of equipment necessary  
to the task and to enable any necessary maintenance work to be  
carried out unhindered.  
1-2-2 Clearing a Jammed Cutting Chamber  
1. Disconnect and lockout power.  
2. Be certain that the rotor is motionless.  
3. Open the front panel and remove the bin.  
4. Unscrew the screw knob, which keeps the hopper and screen  
cradle in place.  
5. Remove the screen.  
Page 11 of 53  
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!! CAUTION !!  
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  
KNIVES.  
A block of wood should be used to exert force on the rotor, usually  
in the direction opposite normal rotation.  
Good footing on a clean floor is essential and the body should be  
well braced when performing this act. Guard against loss of  
balance should the jammed conditions suddenly come free.  
A leather mallet and block of wood of sufficient length to keep  
hands away from the path of knives can be used if required.  
Use pliers in removing material from the cutting chamber, keeping  
in mind that the removal of material may cause rotation of the rotor  
and rotor knives.  
After clearing the jam, be certain that the hopper screen, and all  
guards and covers are secured in place before connecting power  
and starting the machine.  
1-3  
Safety Features  
The granulators are equipped with safety features intended to  
protect personnel and the granulator. Do NOT remove or tamper  
with such equipment.  
1-3-1 Safety Features Fitted On the Granulator  
All moving drive parts, including the two pulleys and the belt, are  
contained in a guard, which may only be removed using specific  
tools and moreover cannot be fixed in the correct position without  
special fastenings.  
Warning!  
Always make sure that the guard is in position before starting the granulator.  
Page 12 of 53  
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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.  
The method of opening the granulator has been designed to restrict  
operator access, allowing the rotor and all moving knives to stop  
completely. To allow operator access more quickly could be  
dangerous as it might be possible to make contact with the  
granulator knives while they are still rotating.  
Figure 1: Safety Switch  
1-3-2 Opening the Granulator  
The Start/Stop lighted pushbutton provided on the control panel  
(Figure 2) is used to operate the granulator. The button must be  
pressed to stop the granulator and pulled out to start.  
Before performing any maintenance or opening the granulator,  
perform the following procedure:  
1. Turn off the granulator using the pushbutton provided.  
2. Turn the disconnect switch to OFF and lockout power. (If you  
cannot lock out power, remove the power fuses in the control  
panel.)  
Page 13 of 53  
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3. Tag the machine as Out of Service.  
4. Make sure the rotor has come to a complete stop.  
Warning!  
Wear protective gloves when exposed to knives.  
Figure 2: Control Panel  
Start/Stop Push Button  
Disconnect Switch  
1-3-3 Sound Enclosure  
Research has been conducted to assess the noise generated by the  
operation of Sound Enclosed Granulator Models BP1012 and  
BP1018.  
The testing is intended to determine a General Noise Level during  
the operation of the granulator. Although the operating noise  
levels vary with different processed materials, material  
configurations, throughputs, and conveying methods, the  
information presented here will give the user an average noise  
level that operators may be exposed to.  
Reference was made to the following technical regulations to  
establish the noise emitted by the machine:  
Page 14 of 53  
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S.P.I. Noise Test – Noise Measurement Procedure for  
Granulators, by the Society of the Plastic Industry.  
UNI7712 – Machine Tools – Determining Noise in the Working  
Environment – 1977  
ISO3746 – Acoustics – Determination of Sound Power Level of  
Noise Sources – Engineering method for free field conditions  
over a reflecting plane – 1981  
ISO3746 – Acoustics – Determination of Sound Power Level of  
Noise Sources – Survey method – 1979  
DIN45635 – Measurements of airborne noise emitted by  
machines – Enveloping measuring method – 1972.  
The technical specifications of the Sound Enclosed Granulator  
Models BP1012 and BP1018 (Figure 3) and the test methods used  
to establish the noise level generated are described below (Figure  
5). Figure 4 gives the mean sound levels Lpm in dB(A) for each  
model of machine, as well as an average of the sound levels  
measures at the four positions shown on the diagram below.  
Figure 3: Noise Test Specifications  
Model Motor Power Impeller Speed  
75% Production  
Test Supply (SPI  
Method)  
Production  
kW  
5.5  
7.5  
Rev./min.  
340  
Kg/h  
140  
200  
Kg/h  
105  
150  
Pcs. No./min.  
Kg/h  
99.5  
149.0  
BP1012  
BP1018  
24  
36  
340  
Figure 4: Average Sound Levels  
Model BP1012 Sound Enclosed  
Model BP1018 Sound Enclosed  
Position  
Sound Levels in dB(A)  
Position  
Sound Levels in dB(A)  
1
2
3
4
Lpm  
84.3  
83.6  
82.6  
82.2  
93.2  
1
2
3
4
Lpm  
86.0  
85.6  
84.1  
84.1  
85.0  
All Granulators provided with 5/16” (8 mm) Diameter Hole Screen.  
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Figure 5: Noise Test Method  
Operator  
Position  
1
S.P.I Material Sample  
Feeding Point  
Type: PVC 1120  
SCH40 ASTMD-1785  
Length: 145 mm  
Outer Dia.: 33.5 mm  
Inner Dia.: 26.5 mm  
Thickness: 3.5 mm  
Mass: 0.069 kg  
Position of the  
phonometric  
detectors (h=1.5 m)  
Machine being tested  
2
4
1.0 m  
1.0 m  
3
Page 16 of 53  
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2
General Information  
2-1  
2-2  
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. The  
granules fall and collect in the bin below. The operation of the  
granulator is controlled by a control panel and powered by an  
electric motor.  
Using This Manual  
Use this manual as a guide and reference for installing, operating,  
and maintaining your granulator. The purpose is to assist you in  
applying efficient, proven techniques that enhance equipment  
productivity.  
The General Information section outlines models covered, standard  
features, and available options. Additional sections within the  
manual provide instructions for installation, pre-operational  
procedures, operation, preventive maintenance, and corrective  
maintenance.  
Installation instructions include all required data for receiving,  
unpacking, inspecting, and setup of the granulator. Whenever  
possible, illustrations have been included to help you complete  
these tasks more efficiently. We can also provide the assistance of  
a factory-trained technician to help train your operator(s) for a  
nominal charge.  
Pre-operational procedures include instructions, checks, and  
adjustments that should be followed before commencing with  
operation of the granulator. These instructions are intended to  
supplement standard shop procedures performed at shift, daily, and  
weekly intervals.  
The Operation chapter includes a description of electrical and  
mechanical controls, in addition to information for operating the  
granulator safely and efficiently.  
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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. Potential problems are listed, along with  
possible causes and related solutions.  
The Spare Parts section contains a list of parts that may require  
replacement. A spare parts list with part numbers specific to your  
machine is provided with your shipping paperwork package. Refer  
to this section for a listing of spare parts for purchase. Have your  
serial number and model number ready when ordering.  
2-3  
Safety Symbols Used in This Manual  
The following safety alert symbols are used to alert you to  
potential personal injury hazards. Obey all safety messages that  
follow these symbols to avoid possible injury or death.  
DANGER indicates an imminently hazardous situation, which, if  
not avoided, will result in death or serious injury.  
WARNING indicates a potentially hazardous situation or practice  
which, if not avoided, could result in death or serious injury.  
CAUTION indicates a potentially hazardous situation or practice  
which, if not avoided, may result in minor or moderate injury, or in  
property damage.  
2-4  
Description  
2-4-1 Technical Data  
Infeed:  
Front or top entry  
Infeed hopper:  
For manual feeding  
Cutting Chamber: Upright bolted type  
Rotor:  
3 knife rotor w/lateral disks  
Cutting System:  
Knives:  
Scissor action with double angle cutting  
Tool steel  
Page 18 of 53  
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2-4-2 Main Components of Standard Granulators  
(See Figure 6)  
1. Infeed hopper  
2. Cutting chamber  
3. Bin for granulated material  
4. Belt drive  
5. Control panel  
6. Electric motor  
Figure 6: Main Components of Standard Granulators  
1
5
2
3
4
6
2-4-3 Optional Equipment  
Conveyor  
Other screen hole sizes  
Blower/airveying system  
Vacuum bin  
Special operating voltages  
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Figure 7: Overall Dimensions and Weights  
Model  
A
B
C
D
Weight  
1200 lbs (500kg)  
BP1012  
12 1/4 (311 mm) 29 7/8 (759 mm)  
18 1/4 (464 mm) 35 7/8 (911 mm) 17 3/8 (441 mm) 38 3/16 (970 mm) 1350 lbs (580kg)  
27 (686 mm)  
30 (762 mm)  
BP1018  
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3
Shipping Information  
3-1  
3-2  
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  
Important!  
According to the contract terms and conditions of the Carrier, the responsibility  
of the Shipper ends at the time and place of shipment.  
Notify the transportation company’s local agent if you discover  
damage  
Hold the damaged goods and packing material for the examining  
agent’s inspection. Do not return any goods before the  
transportation company’s inspection and authorization.  
File a claim with the transportation company. Substantiate the  
claim by referring to the agent’s report. A certified copy of our  
invoice is available upon request. The original Bill of Lading is  
attached to our original invoice. If the shipment was prepaid, write  
us for a receipted transportation bill.  
Advise the shipping department regarding your wish for assistance  
and to obtain an RMA (return material authorization) number.  
3-3  
If the Shipment is Not Complete  
Check the packing list as back-ordered items are noted on the  
packing list. You should have:  
X Granulator  
X Bill of lading  
X Packing list  
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X Operating and Installation packet  
X Detailed recommended spare parts list  
X Electrical schematic and panel layout drawings  
X Component instruction manuals  
Re-inspect the container and packing material to see if you missed  
any smaller items during unpacking.  
3-4  
3-5  
If the Shipment is Not Correct  
If the shipment is not what you ordered, contact the shipping  
department immediately. For shipments in the United States and  
Canada, call 1 (800) 229-2919; for all other countries, call our  
international desk at (508) 399-3100. Have the order number and  
item number available.  
Hold the items until you receive shipping instructions.  
Returns  
Important!  
Do not return any damaged or incorrect items until you receive shipping  
instructions from the shipping department.  
3-6  
Uncrating Your Granulator  
Prepare in advance the site you have selected for installation of the  
granulator. Be certain that the area to be occupied by the machine  
is clean, level, and free of obstructions. The site you have selected  
must have a floor rating to adequately support the weight of the  
machine.  
Your granulator is mounted on a wooden skid and blocked and  
banded to secure it for shipment. All non-painted items subject to  
corrosion are coated with a quality rust preventative, and the  
machine is covered with heavy-duty polyethylene to protect it from  
moisture and dirt. Granulators are normally shipped completely  
assembled unless the size of the machine or an agreement for  
special shipping arrangements prompts partial assembly.  
If inspection, after shipment, has revealed no shipping damage,  
unpack the unit by removing the polyethylene protective covering  
and banding. Remove the envelope with the parts list, assembly  
Page 22 of 53  
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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. (See Figure 8)  
Figure 8: Lifting the Granulator  
! CAUTION !  
Do not attempt to lift the granulator by means of any shaft or protruding member,  
ESPECIALLY THE HOPPER  
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4
Installation  
4-1  
Lifting  
Important!  
Before lifting or moving the granulator, check the relative weight shown on the  
shipping papers and in Figure 7.  
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 using a forklift to move the granulator, make sure it is  
suitable for the weight and dimensions of the granulator. When  
moving, take care not to damage delicate parts. To lift the machine  
with a forklift, place the carriage forks under its base (See Figure  
8). Where a forklift truck is not available, it is possible to use  
cables or belts, provided that they are strong enough to support the  
weight of the granulator, then carry out the lifting procedure.  
Important!  
During the movement, the load must remain in a horizontal position, regardless of  
the type of equipment used.  
4-2  
Positioning the Granulator  
Important!  
Make sure that the base on which the granulator is supported is solid and  
completely level, in order to rigidly support the granulator without its being  
subjected to vibration. It is recommended that the floor be reinforced concrete  
with a very smooth support surface.  
Place the granulator in an area large enough to allow sufficient  
space on all sides for the operator to carry out maintenance.  
Although the granulator controls and electrical components  
comply with CEE & NEMA codes and regulations, the machine  
must be placed in an area free from humidity, dampness, and  
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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 9.  
Figure 9: Inserting the Bin  
4-3  
Electrical Connection  
It is extremely important that the machine is correctly wired into  
the plant power source by a licensed electrician. See Section 9 for  
a wiring diagram.  
All electrical equipment must be properly grounded in accordance  
with local and national codes to protect personnel from electrical  
shock. A fusible, lockable disconnect between the plant power  
source and the machine electrical cabinet is highly recommended.  
!!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  
volts, 60 Hz, 3 ph.  
The power cable from the plant source can be run directly to the  
control panel or through the base of the machinery. To run the  
power cable through the base of the granulator, perform the  
following steps:  
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1. Open the back cover, and insert the power cable from  
underneath the granulator.  
2. Pass the power cable through the appropriate hole, and insert it  
into the control panel through a connector placed at the base.  
3. Connect the three phase wires to the appropriate terminals of  
the main switch, and connect the ground wire to the terminal  
provided near the main disconnect switch. (See Figure 10.)  
Figure 10: Electrical Connections  
Phase Wire  
Terminals  
4-4  
Start-Up Checks  
4-4-1 Checking the Cutting Chamber  
Before starting the granulator, open the cutting chamber to ensure  
that during transportation or installation, no foreign objects have  
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 lockout the machine power to the granulator or  
remove the fuses from the main control panel.  
2. Open the front panel, and remove the bin.  
3. Unscrew the screw knob(s), and carefully lower the screen.  
(See Figure 11.)  
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4. Pivot back the feed hopper to gain free access to the cutting  
chamber.  
5. Check that there are no foreign objects in the cutting chamber.  
6. Check to be sure the bed knife and rotor knife bolts are at the  
proper torque and the knife gap is set according to  
specifications. See Sections 4-4-4 and 6-4.  
7. After completing the checks, close the hopper and screen, and  
fasten them with the corresponding knobs; reinsert the bin.  
Then close both the rear cover and the front panel.  
8. Remove the drive belt guard by unscrewing the ten fastening  
screws.  
9. Manually give the rotor at least one complete turn using the  
rotor pulley.  
10. If there are no warning noises or signs of friction, this means  
the cutting chamber is completely clear. Replace the belt guard,  
remove lockout devices, and turn power on.  
Figure 11: 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 appropriate window that the rotor direction  
corresponds to that shown on the arrow label that is located  
above the guard.  
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If the rotation direction is correct, the granulator is ready to use. If  
the rotation direction is incorrect, reverse the rotor direction as  
follows:  
!!Warning!!  
A LICENSED ELECTRICIAN must carry out this operation.  
1. Disconnect and lockout the power to the machine at the  
incoming power source. If the disconnect is not lockable,  
remove the fuses.  
2. Reverse any two of the three power line conductors to the  
machine. If there is more than one motor on the machine and  
only one is turning in the wrong direction, reverse any two of  
the three line conductors at the overload relay for that motor.  
3. Unlock the power and switch the electrical disconnect switch  
to “ON”. (Replace the fuses if necessary.)  
4. Re-check the rotation direction of the motors.  
4-4-3 Test the Interlock Switches  
With the cutting chamber and screen cradle closed and power On,  
perform the following tests:  
1. Push the start button to start the granulator.  
2. Retract the screen cradle interlock actuator screw by turning it  
counterclockwise. Make sure that the end of the actuator screw  
is visible and clear of any contact. The granulator should stop.  
3. If the machine continues to run, turn off and lockout the power.  
4. Have the electrician check the interlock switch on the screen  
cradle to correct the malfunction.  
5. If necessary, engage the screen cradle interlock actuator screw.  
Having completed the above procedures, close the control panel.  
Unlock power or return the fuses in the supply panel, turning the  
disconnect switch to “ON”. Pull the start button and release only  
when the motor has started, then check again that the rotor is  
turning in the correct direction.  
4-4-4 Checking Knife Position  
NOTE: This operation must be carried out by an operator /  
mechanical maintenance engineer.  
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Before undertaking any type of work on the machine, use a feeler  
gauge to check the distance between the bed knives and the rotor  
knives (the knife gap).  
To access the cutting chamber, follow the same procedure and  
observe the precautionary steps given in Section 4-4-1. Before  
proceeding to the checks, it is advisable to block the rotor to avoid  
any inadvertent rotation.  
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 12.)  
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. (See Section 6-4: Inspection and  
Adjustment of Knives.)  
Once you have checked the knife gap, close the hopper, secure it  
with the appropriate swing bolts, reinsert the bin, and close the  
front panel.  
Figure 12: Checking the Knife Gap  
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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.  
X Have all installation and preparation instructions been read and  
followed?  
X Have the granulator operators and all other necessary  
personnel, such as the cleanout, maintenance and service  
persons, been fully trained on machine operation and all  
machine safety mechanisms?  
X Have the granulator operator and all other necessary personnel,  
such as the cleanout, maintenance and service persons, read the  
Operation and Installation Manual?  
X Have sufficient location clearances been allowed?  
X Has the equipment been grounded as required by local codes  
and/or Article 250 of the National Electric Code?  
X Have all motors been checked for proper rotation?  
X Have all machine controls, pushbuttons, and limit switch  
interlocks been checked for proper functioning?  
X Has the cutting chamber been checked for foreign matter?  
X Have the drive components been checked for alignment and  
tension?  
X Is the machine properly closed with all visible fasteners tight?  
X Are all accessory components electrically and mechanically  
connected with proper support and with all fasteners tight?  
X Are all electrical enclosure boxes tightly closed and clamped  
shut?  
X Are all personnel clear of the machine?  
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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 release it  
when the motor has started.  
It is quite normal for the motor not to start immediately, as the  
electronic system must check all the micro switches before  
enabling start up procedures. Wait for the electric motor to reach  
normal rotating speed before feeding the granulator.  
!!Warning!!  
Never push material into the hopper with hands.  
If the hopper becomes blocked, the granulator must be turned off,  
and the power must be locked out or the fuses removed.  
Before stopping the granulator for the end of a working shift or for  
any other reason, stop feeding in the material to be granulated, and  
leave the granulator running for several minutes to allow the  
cutting chamber to completely granulate and empty the material  
inside. Press the lighted Start/Stop button, which will immediately  
turn off the granulator.  
Important!  
If the granulator stalls frequently during use, it may be necessary to adjust the  
calibration of the “overload.” (Refer to the values shown in the electrical  
diagram.)  
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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 and with the power supply disconnected and locked  
out.  
Conduct that is not in accordance with the safety instructions in  
Section 1 may pose a threat to both personnel and equipment.  
Instructions given in the maintenance procedures should be strictly  
followed.  
Once the maintenance work is completed, before returning the  
granulator to service, check the following:  
Any parts that may have been replaced and/or tools that have  
been used are removed from the granulator.  
All safety equipment is in proper working condition.  
Figure 13: Periodic Maintenance Table  
Mechanical Check  
Knife clearance and wear  
Rotor knife retaining screws for tightness  
Downstroke bed knife and shield retaining screws for tightness  
Upstroke bed knife retaining screws for tightness  
Screen cradle arm screws for tightness  
Frequency  
Weekly  
Weekly  
Weekly  
Weekly  
Weekly  
Monthly  
Infeed chute & cutting chamber screws for tightness  
Important!  
After the granulator has been used for the first day, adjust the drive belt tension.  
Correct tension for use should be the minimum at which the belt does not slip.  
Check that the pulleys are correctly aligned.  
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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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Figure 14: Belt Tension Chart  
Belt Cross Section  
Small O.D. Range  
Deflection Force Lbs/V-belt  
Run-In Normal Running  
4.7  
3VX  
3.7  
7.0  
Belt Span  
Deflection = Beltspan  
64  
Belt Deflection Guage  
For best performance, the force measured on the gauge should be  
between the minimum and maximum values shown on the chart. If  
there is not enough deflection force, the belts should be tightened.  
If there is too much deflection force, the belts should be loosened.  
6-2-3 Belt Replacement  
Important!  
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. Then release the belt from tension by  
fully unscrewing the tie rods. Slip off the belts, and replace them  
with new ones. Continue with the procedure for adjusting the belt  
tension.  
6-3  
Removal and Replacement of the Screen  
NOTE: A qualified operator/maintenance mechanic should  
carry out this procedure.  
1. Switch the machine off and lockout power by turning the  
disconnect switch to “OFF”, or remove the fuses from the main  
control pane.  
2. Open the front panel.  
3. Remove the bin.  
The Deflection Force Value shown is for each belt and must be multiplied by the number of V-belt  
elements if all are deflected.  
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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.  
5. Remove the screen, keeping it in a horizontal position. (See  
Figure 15.)  
6. Replace the screen with a new one, tighten the screw knob,  
reposition the bin, and close the front panel. Unlock the power  
and turn the machine back on.  
Figure 15: Removing the Screen  
6-4  
Inspection and Adjustment of Knives  
NOTE: This operation must be performed by a qualified  
operator / mechanical maintenance technician.  
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 1-5 in  
Section 6-3. Then, proceed as follows:  
1. Open the rear-closing panel by releasing the locking latch.  
2. Pivot the in-feed hopper completely back to gain clear access  
to the cutting chamber, and clear any process material or  
foreign objects between the knives.  
3. Turn the rotor slowly until the first row of rotor knives are in  
close proximity to the bed knife cutting edge. Turn the rotor  
backwards, keeping hands and fingers from directly contacting  
sharp knife-edges.  
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4. Using a feeler gauge, measure the gap between the rotor and  
knife cutting edges. Check each rotor knife to find the “high  
knife” or the knife that measures the smallest gap. If the gap is  
substantially greater than the specified 0.006” - 0.008” (0.15  
mm – 0.2 mm), the knives need readjustment.  
5. Loosen the bed knife locking bolts. (See Figure 16.)  
6. Leave the two outside bolts just tight enough to allow the bed  
knife to move.  
7. Loosen the adjustment screws and lock nuts. (See Figure 16.)  
8. Insert a 0.006” – 0.008” (0.15 mm – 0.2 mm) thickness gauge  
between the cutting edge of the bed knife and that of the high  
rotor knife.  
9. Adjust the bed knife into the rotor knife using the adjustment  
screws, so as to leave enough space for the thickness gauge to  
move.  
NOTE: Check that the distance between the fixed and rotating  
knife is the same at both ends of each knife. Move the bed  
knife using the push adjusting screws a little at a time on each  
end.  
10. When adjustment is complete, tighten the lock nuts on the  
adjustment screws.  
11. Torque the bed knife 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 revolution,  
checking the exact distance between all the rotary knives and  
the bed knives.  
13. Close the hopper and replace the screen and screen cradle,  
securing them in place using the swing bolts provided.  
14. Close the front and rear doors, and unlock the power or replace  
the fuses in the control panel. Turn the disconnect switch to  
“ON”.  
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Figure 16: Inspection of Knives  
Bed Knife Locking  
Bolts  
Bed Knife  
Adjusting Screws  
Rotor Knife  
Locking Bolts  
6-5  
Removing and Replacing Bed Knives  
NOTE: This procedure should be performed by a qualified  
operator / maintenance mechanic. Protective gloves must be  
worn to avoid injury when handling the cutting knives.  
To remove and replace bed knives, complete the following  
procedure:  
1. Open the granulator by following Steps 1-5 in Section 6-3.  
2. Open the rear-closing panel by releasing the locking latch.  
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. Using a wooden block, block the  
rotor to prevent it from rotating while removing the knives.  
5. Loosen the lock nuts and back off the adjustment screws. (See  
Figure 16.)  
6. Loosen and remove the bed knife bolts and lift the upper  
shield, positioned above the knife, removing it from the cutting  
chamber. The bed knife may now be removed.  
7. Perform the above steps to remove the rear (upstroke) bed  
knife as well.  
NOTE: Before replacing the bed knife with new or sharpened  
knives, wipe the knife seats on the knife block, being sure to  
clean off all process material. The tapped holes in the knife  
block (used for holding the knives in place) should be clear of  
any dirt, oil, or process material.  
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8. Install new or sharpened bed knives on each knife seat, making  
sure that the rotor is blocked to prevent it from rotating while  
installing each knife. Be sure to place the bed knives in the  
correct positionsthe rear (down stroke) bed knife must be  
placed with the extended cutting edge on top, and the front  
(upstroke) bed knife should be placed with the cutting edge on  
the bottom.  
9. Replace the upper shields in position above the bed knives. The  
shield on the rear (down stroke) bed knife should be positioned  
so that the inside edge is set back approximately 1/32” from the  
cutting edge below it.  
10. Before re-installing the knife bolts, wipe them clean with a  
lightly oil-damped cloth. Do not leave an oil film on the bolt  
since lubrication can adversely affect the stress on the bolt  
when torqued to the specified values. It is recommended that  
the knife bolts be replaced with each new set of knives. This  
will reduce the risk of bolt failure due to overstretching.  
Always use the specified replacement bolts.  
11. Tighten the bed knife bolts at each end of the knife just enough  
to keep the knife in place, while still allowing the adjusting  
screws to move the knife forward. The remaining bolts can be  
left hand tight until the knife is adjusted.  
12. Adjust the knife gaps with the rotor knives and close the  
machine, following Steps 8-14 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 knives, complete the following  
procedure:  
1. Open the granulator by following Steps 1-5 in Section 6-3.  
2. Open the rear-closing panel by releasing the locking latch.  
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 knife bolts are in a convenient  
position to remove the bolts with the appropriate wrench.  
Using a wooden block, block the rotor to prevent it from  
rotating while removing knives or after a knife has been  
removed.  
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5. Loosen and remove the knife bolts and lift the knife off the  
knife seat removing it from the cutting chamber.  
6. Perform the above steps until all the rotor knives are removed.  
NOTE: Before replacing the rotor knife with new or sharpened  
knives, wipe the knife seats on the rotor, being sure to clean off  
all process material. The tapped holes in the rotor (used for  
holding the knives in place) should be clear of any dirt, oil, or  
process material.  
7. Loosen the bed knife bolts and adjusting screws, and pull back  
the bed knife so that the rotor knives will collide as they are  
installed and rotated.  
8. Install new or sharpened knives on each knife seat, making  
sure that the rotor is still blocked to prevent it from rotating  
while installing each knife.  
9. Before re-installing the knife bolts, wipe them clean with a  
lightly oil-damped cloth. Do not leave an oil film on the bolt  
since lubrication can adversely affect the stress on the bolt  
when torqued to the specified values. It is recommended that  
the knife bolts be replaced with each new set of knives. This  
will reduce the risk of bolt failure due to overstretching.  
Always use the specified replacement bolts.  
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).  
12. Adjust the knife gap with the bed knives and close the  
machine, following Steps 8-14 in Section 6-4.  
6-7  
Specifications for Re-sharpening Bed Knives  
Every bed knife has two cutting edges, one on each side. When a  
blade becomes worn, the knives can be rotated. To regrind these  
knives, refer to the data shown in Figure 17. Replacement of these  
knives is necessary when their length falls below the recommended  
tolerance.  
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Figure 17: Bed Knife Specifications  
Model  
BP1012  
X
Y
Grind these surfaces only  
2.433”  
2.748”  
20°  
61.8 mm  
69.8 mm  
BP1018  
2.402”  
2.717”  
61.0 mm  
69.0 mm  
Minimum Length (X)  
New Knife Length (Y)  
0.158”  
(4 MM)  
0.158”  
(4 MM)  
6-8  
Specifications for Re-sharpening Rotor Knives  
All the rotor knives must be re-sharpened in sets. Each knife within  
a set must have a tolerance within 0.003” (0.05 mm) for the total  
height, heel to cutting edge. Greater variations within a set will  
result in improper knife gap settings and other operational  
problems. See Figure 18 for rotor knife specifications.  
Knives below the minimum dimension specified must not be used.  
Using knives below the specified minimum can cause interference  
resulting in serious damage to the rotor and cutting chamber.  
When using a surface grinder to re-sharpen the rotor or bed knives,  
it is not harmful to allow a few small nicks to remain on the cutting  
edge. Grinding the knife so that the cutting edge is free from all  
nicks can be wasteful.  
Figure 18: Rotor Knife Specifications  
30°  
20°  
Minimum Length 2.305” (58.5 mm)  
New Knife Length 2.480” (63 mm)  
.382” .003  
(9.5 mm .05)  
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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 complicated ones, which may  
subsequently prove unnecessary.  
7-1  
General Problems  
Problem  
Possible Causes  
Possible Remedies  
Overheating of bearings  
Dirt or contamination in the bearing  
Correct source of contamination  
Excessive belt tension  
No lubrication  
Adjust belt tension  
Check bearing seals  
Carefully clean seat  
Knives moving in their  
seats  
There may be foreign matter on the  
knives  
Knife screws loose  
Tighten screws with torque wrench  
at values specified  
Knife screws weakened  
Improper resharpening  
Screws must not be used more than  
6 times  
Check knife grinding method used  
Broken knife  
Contact supplier  
Extremely hard material  
Check rotor direction  
Incorrect rotor direction  
Look for cause with operator  
Foreign body in the cutting chamber  
Faulty fitting of screen  
Incorrect knife position  
Check assembly procedure  
Excessive knife wear  
Correct the gap or distance  
between bed knives and rotor  
knives  
Check dimensions with Figure 17  
and Figure 18.  
Improper knife re-sharpening  
Contact the supplier for special  
knives  
Abrasive material  
Abnormal screen wear  
Incorrect fitting of screen  
Check that the screen is correctly  
seated in its rear position and that it  
fits perfectly at the front.  
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Problem  
Possible Causes  
Abrasive material  
Possible Remedies  
Contact the supplier for special  
knives  
Rotor Jamming  
Excessive infeed material  
Reduce amount of material being  
fed to the machine  
Remove the screen and clear the  
holes  
Total or partial obstruction of the  
screen holes  
Check and/or adjust belt tension  
Replace with new knives  
Insufficient belt tension  
Knives worn  
Check distance between knives  
Distance between the knives too  
small or too large  
Screen holes too small  
Increase screen hole diameter  
Failure of air conveying system or  
discharge system  
Check fan rotation and that pipes  
are not obstructed  
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7-2  
Electrical Problems  
Problem  
Possible Causes  
Possible Remedies  
Machine stops for no  
apparent reason  
Safety switch has stopped power  
Check that the knobs that operate  
the safety switch are tightened  
Electric motor does not  
start  
No power  
Check fuses  
Overload failure  
Check amperage of electric motor  
Check and replace  
Safety switch not working  
Empty cutting chamber  
Check belt tension and adjust  
Reconnect correctly  
Cutting chamber too full  
Excessive drive belt tension  
Motor starts but does not  
speed up or take a load  
Motor connected to power source  
incorrectly  
Defective starter winding  
Check current in each phase. If  
substantial difference between  
phases, contact motor manufacturer  
Motor starts, but does not Bearing excessively worn  
gain speed  
Replace bearings  
Cutting chamber full  
Empty cutting chamber  
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8
Spare Parts  
When requesting spare parts, always quote the granulator model  
and serial number (from the granulator label), as well as the table  
number and reference number (from the spare parts tables) and the  
quantity required.  
8-1  
Table 1: Recommended Spare Parts List  
Item  
1012  
Quantity  
1018  
Quantity  
Material  
Rotor Knife  
Rotor Knife Screw  
Bed Knife  
3
12  
2
3
15  
2
HCHC  
GR 10.9 M12 x 40MM  
HCHC  
Bed Knife Screw  
Bed Knife Washer  
Screen  
Rotor Bearing  
Drive Belt  
8
8
1
2
2
4
1
10  
10  
1
2
2
GR 10.9 M12 x 60MM  
Hardened  
Specify Hole Size Required  
65MM Bore  
Qty. Depends on HP  
GR  
Bed Knife Adj. Screw  
Interlock Switch  
4
1
When ordering a screen, always specify the diameter of the holes required.  
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Figure 19: Cutting Chamber – Vertical Cross Section  
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Figure 20: Cutting Chamber – Longitudal Cross Section  
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Figure 21: Cutting Chamber – Front View  
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Figure 22: Cutting Chamber – Rear View  
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9 Typical Wiring Diagram  
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10  
Contact Information  
Parts Department  
Call Spare Parts Express toll-free 8am – 8PM EST (800) 229-2919. Sterling OEM quality  
replacement and spare parts ensure operation at design specifications. Please have the model  
and serial number of your equipment when you call. Consult the Customer Parts List included in  
your information packet for replacement part numbers.  
Service Department  
Call toll free (800) 229-2919 8am – 8pm EST- Emergency service available 24 hours a day.  
Sterling has a qualified service department ready to help. Service contracts are available for most  
Sterling products.  
Sales Department  
Sterling sells products via a worldwide network of independent sales representatives. Contact our Sales  
Call (508)399-3100 Monday – Friday, 8am – 5pm EST  
Department for the name of the sales representative nearest you.  
Sterling  
124 Roddy Avenue  
South Attleboro, MA 02703-7900  
Tel:  
(508) 399-3100  
Fax:  
(508) 399-3150  
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Service Notes  
______________________________________________________________________________  
______________________________________________________________________________  
______________________________________________________________________________  
______________________________________________________________________________  
______________________________________________________________________________  
______________________________________________________________________________  
______________________________________________________________________________  
______________________________________________________________________________  
______________________________________________________________________________  
______________________________________________________________________________  
______________________________________________________________________________  
______________________________________________________________________________  
______________________________________________________________________________  
______________________________________________________________________________  
______________________________________________________________________________  
______________________________________________________________________________  
______________________________________________________________________________  
______________________________________________________________________________  
______________________________________________________________________________  
______________________________________________________________________________  
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Warranty  
Sterling warrants all equipment manufactured by it to be free from defects in workmanship and material  
when used under recommended conditions. The Company’s obligation is limited to repair or replace FOB  
the factory any parts that are returned prepaid within one year of equipment shipment to the original  
purchaser, and which, in the Company’s opinion, are defective. Any replacement part assumes the  
unused portion of this warranty.  
This parts warranty does not cover any labor charges for replacement of parts, adjustment repairs, or any  
other work. This warranty does not apply to any equipment which, in the Company’s opinion, has been  
subjected to misuse, negligence, or operation in excess of recommended limits or which has been  
repaired or altered without the Company’s express authorization. If the serial number has been defaced  
or removed from the component, the warranty on that component is void. Defective parts become the  
property of the warrantor and are to be returned.  
The Company is not liable for any incidental, consequential, or special damages or expenses. The  
Company’s obligation for parts not furnished as components of its manufactured equipment is limited to  
the warranty of the manufacturers of said parts.  
Any sales, use, excise, or other tax incident to the replacement of parts under this warranty is the  
responsibility of the purchaser.  
The company neither assumes nor authorizes any other persons to assume for it any liability in  
connection with the sale of its equipment not expressed in this warranty.  
Many types of Sterling equipment carry an additional one-year service policy. Consult your Sterling sales  
representative for specific details.  
124 Roddy Avenue South Attleboro, MA 02703-7900  
Phone (508) 399-3100 Fax (508) 399-3150  
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124 Roddy Avenue South Attleboro, MA 02703-7900  
(508) 399-3100 Fax (508) 399-3150  
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