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Heavy Duty Granulators
20”x62” and 20”x72”
Models Covered:
B, GMB, HDG, MSH
Bulletin Number: GRN2-605
Effective: 3/1/13
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Write Down Your Serial Numbers Here For Future Reference:
_________________________ _________________________
_________________________ _________________________
_________________________ _________________________
We are committed to a continuing program of product improvement.
Specifications, appearance, and dimensions described in this manual are subject to change without notice.
DCN No. ____________
© Copyright 2013
All rights reserved.
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Shipping Info
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.
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 customer service regarding your wish for assistance and to obtain an RMA (return
material authorization) number.
If the Shipment is Not Complete
Check the packing list as back-ordered items are noted on the packing list. You should have:
Bill of lading
Packing list
Operating and Installation packet
Electrical schematic and panel layout drawings
Component instruction manuals
Re-inspect the container and packing material to see if you missed any smaller items during
unpacking.
If the Shipment is Not Correct
If the shipment is not what you ordered, contact the shipping department immediately. For
immediate assistance, please contact the correct facility located in the technical assistance
section of this manual. Have the order number and item number available. Hold the items
until you receive shipping instructions.
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Returns
Do not return any damaged or incorrect items until you receive shipping instructions from the
shipping department.
Credit Returns
Prior to the return of any material, authorization must be given by the manufacturer. A
RMA number will be assigned for the equipment to be returned.
Reason for requesting the return must be given.
ALL returned material purchased from the manufacturer returned is subject to 15% ($75.00
minimum) restocking charge.
ALL returns are to be shipped prepaid.
The invoice number and date or purchase order number and date must be supplied.
No credit will be issued for material that is not within the manufacturer’s warranty period
and/or in new and unused condition, suitable for resale.
Warranty Returns
Prior to the return of any material, authorization must be given by the manufacturer. A
RMA number will be assigned for the equipment to be returned.
Reason for requesting the return must be given.
All returns are to be shipped prepaid.
The invoice number and date or purchase order number and date must be supplied.
After inspecting the material, a replacement or credit will be given at the manufacturer’s
discretion. If the item is found to be defective in materials or workmanship, and it was
manufactured by our company, purchased components are covered under their specific
warranty terms.
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Table of Contents
CHAPTER 1: SAFETY ........................................................................... 6
1-1 How to Use This Manual ........................................................................................................... 6
Safety Symbols Used in this Manual ................................................................................. 6
1-2 General Safety Regulations ...................................................................................................... 9
1-3 Responsibility ............................................................................................................................ 9
1-4 Warnings and Precautions ...................................................................................................... 10
CHAPTER 2: FUNCTIONAL DESCRIPTION ....................................... 12
2-1 Models Covered in This Manual .............................................................................................. 12
2-2 General Description ................................................................................................................. 12
2-3 Typical Features and Components ......................................................................................... 12
2-4 Safety Features ....................................................................................................................... 13
CHAPTER 3: INSTALLATION ............................................................. 14
3-1 Uncrating the Equipment ......................................................................................................... 14
3-2 Belt Tensioning ........................................................................................................................ 14
3-3 Electrical Connections ............................................................................................................. 14
3-4 Accessing the Cutting Chamber .............................................................................................. 15
3-5 Closing the Cutting Chamber .................................................................................................. 16
3-6 Initial Start-up .......................................................................................................................... 17
CHAPTER 4: OPERATION .................................................................. 18
4-1 Start-up and Operation ............................................................................................................ 18
4-2 Feeding the Granulator ........................................................................................................... 18
4-3 Clearing a jammed Cutting Chamber ...................................................................................... 18
4-4 Shut-down ............................................................................................................................... 19
CHAPTER 5: MAINTENANCE ............................................................. 20
5-1 Preventative Maintenance Schedule ....................................................................................... 20
5-2 Lubrication ............................................................................................................................... 20
5-3 Replacing and Adjusting the Knives ........................................................................................ 21
5-4 Sharpening the Knives ............................................................................................................ 23
5-5 Adjusting Belt Tension ............................................................................................................. 23
5-6 Rotor Bearing Replacement .................................................................................................... 25
CHAPTER 6: TROUBLESHOOTING ................................................... 27
6-1 Introduction .............................................................................................................................. 27
6-2 Electrical Faults ....................................................................................................................... 27
6-3 Processing Faults .................................................................................................................... 28
6-4 Mechanical Faults ................................................................................................................... 29
CHAPTER 7: APPENDIX ..................................................................... 30
7-1 Recommended Torque for Screws .......................................................................................... 30
7-2 Technical Specifications .......................................................................................................... 30
7-3 Drawings ................................................................................................................................. 32
7-4 Technical Assistance ............................................................................................................... 36
Parts and Service Department ......................................................................................... 36
Sales and Contracting Department .................................................................................. 36
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Chapter 1: Safety
1-1 How to Use 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.
This manual covers only light corrective maintenance. No other maintenance should be
undertaken without first contacting a service engineer.
The Functional Description section outlines models covered, standard features, and safety
features. Additional sections within the manual provide instructions for installation, preoperational procedures, operation, preventive maintenance, and corrective maintenance.
The Installation chapter includes required data for receiving, unpacking, inspecting, and setup
of the granulator. We can also provide the assistance of a factory-trained technician to help
train your operator(s) for a nominal charge. This section includes 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.
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 Appendix contains technical specifications, drawings, schematics, parts lists, and
available options. 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.
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 that, if not avoided,
will result in death or serious injury.
WARNING indicates a potentially hazardous situation or practice that, if
not avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation or practice that, if
not avoided, may result in minor or moderate injury or in property damage.
Chapter 1: Safety 6 of 37
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Figure 1: Safety Tags and warning features
High Voltage Hazard. The
Every six months inspect all
Hands could be exposed to
Every month inspect the
When equipped with belts
Every month inspect the
Hands can become
Every month inspect the
The unit can produce
Always wear eye and ear
Hazard Alert Symbol Description/Explanation Preventative Maintenance
electrical enclosure is supplied
with 3-phase electrical power.
Use caution when using or
maintaining this product.
a crushing movement.
and sheaves, hands could
become entangled.
entangled or cut if they
enter the danger zone of
gears or cutting shears.
electrical connections for
secure attachment. For
further information see the
Maintenance Chapter in this
manual
shears/blades for any type of
wear. For further information
see the Maintenance Chapter
in this manual.
belt(s) for any type of wear.
For further information see
the Maintenance Chapter in
this manual.
shears/blades for any type of
wear. For further information
see the Maintenance Chapter
in this manual.
continuous noise above 85
dBA and/or produce
projectiles under normal
operating conditions.
protection when the machine
is in operation or performing
maintenance.
Chapter 1: Safety 7 of 37
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Read Operators Manual. This equipment must be operated and
Lock Out. This equipment is operated with 3-phase electrical
Wear Safety Gloves. This equipment operates with sharp blades
Wear ear and eye protection. This unit may produce loud and
Pneumatic or hydraulic equipment. Pneumatic or hydraulic
Mandatory Symbol Description/Explanation
maintained by properly trained personnel. The information
contained within this manual must be read and understood prior to
operating this equipment.
power. Therefore, when performing any maintenance operations
we recommend following the local standards for performing a
lock-out/tag-out procedure.
and rotors. We recommend that technicians use safety gloves
while performing maintenance to protect hands from being
exposed to these sharp surfaces.
continuous noise and may produce projectiles.
equipment must be kept at a safe pressure.
Do not reach into unit. Reaching into a unit is prohibited while the
unit is in operation and may cause serious injury.
Chapter 1: Safety 8 of 37
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1-2 General Safety Regulations
This machine uses knives for the performance of its intended use. Consequently, it can be a
dangerous machine to operate and maintain unless these safety regulations are followed.
These regulations should be read, understood and periodically reviewed by all personnel
involved in any way with this machine.
Never operate or remove any machine components that are secured by wrench-type fasteners
unless the motor is electrically locked out and the rotor is motionless.
Never operate the machine or jog the rotor unless the cutting chamber covers, discharge
chute, or any guards or covers are in place and secure. Do not circumvent the safety
interlocks.
Prior to clearing a jam or performing any maintenance, the motor should be turned off and
electrically locked out. Be sure that the rotor has come to a stop. Hands must not be inserted
into the machine to clear the jam.
Do not extend any part of the body into feed roll openings or discharge area unless the motors
are electrically locked out and the rotor and feed rolls are motionless.
Never extend fingers through holes in screen.
Be sure that the v-belts are properly aligned and that tension is at its maximum.
Extreme care should be taken to see that all bolts are properly tightened at all times. During
the operation of the machine, rotor knife bolts may come loose. Although fine threads are
used on the rotor knife bolts because vibration does not easily loosen them, you should
inspect the tightness of the bolts frequently.
This machine is designed for the granulation of plastic materials. Do not feed any other
materials into the machine.
1-3 Responsibility
These machines are constructed for maximum operator safety when used under standard
operating conditions and when recommended instructions are followed in the maintenance
and operation of the machine.
All personnel engaged in the use of the machine should become familiar with its operation as
described in this manual.
Proper operation of the machine promotes safety for the operator and all workers in its
vicinity.
Becoming familiar with materials, inspection, speed limitations, screens, and guard
maintenance and total user responsibility will assist you in learning potential areas in need of
observation for danger.
Each individual must take responsibility for observing the prescribed safety rules as outlined.
All caution, warning and danger signs must be observed and obeyed. All actual or potential
danger areas must be reported to your immediate supervisor.
Chapter 1: Safety 9 of 37
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1-4 Warnings and Precautions
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:
LEARN AND OBEY your company’s safety policy regarding granulating
equipment.
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.)
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.
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 that mistakenly fall
into the hopper feed opening can cause severe damage to internal cutting chamber,
rotor and screen components.
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 fly back control, caution must be used when operating near the hopper
feed opening in order to guard against unexpected material fly back.
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.
OBSERVE all danger, warning, caution and safety labels on the equipment.
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.
NEVER wear any loose fitting clothes, neckties, wrist watches, 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.
Chapter 1: Safety 10 of 37
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ROTATION OF MOTORS: The correct rotating direction for the granulator motor
is clearly marked on the machine. Always check for proper rotation of motors.
Incorrect rotation direction can cause severe damage.
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.
ALWAYS DISCONNECT AND LOCKOUT the main electrical power to the
granulator before performing any service.
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.
NEVER modify the machine configuration or any individual component without
written notice from the factory.
For further information on granulator safety, installation and operation, see the American
National Standard for Plastics Machinery-Granulators, Pelletizers, and Dicers Used
for Size Reduction of Plastics-Construction, Care, and Use. ANSI B 151.11-1982.
We have long recognized the importance of safety and have designed and manufactured our
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
Chapter 1: Safety 11 of 37
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Chapter 2: Functional Description
2-1 Models Covered in This Manual
This manual provides the necessary instructions for the installation, setup and maintenance of
our 20”x62” and 20”x72” models
2-2 General Description
This granulator is a rugged, rotary-cutting machine specifically designed to cut, chip, and,
granulate the toughest plastic materials with a minimum expenditure of horsepower.
B Series granulators feature a massively built, low RPM high inertia rotor with chevron
knives. It accepts large parts and assures long, trouble-free service
The hopper is designed to remain stationary to allow for a smaller footprint and the screen to
pull out from the side for quick access into the cutting chamber.
These granulators are ideal for pipe, purgings, X-ray film, psi-consumer baled bottles, film
and fibers.
2-3 Typical Features and Components
Hopper
The hopper is an upright enclosure bolted to the top of the cutting chamber. The hopper is
designed to facilitate feeding of material to the rotary knives and to prevent chips thrown
from the cutting chamber from reaching the operator.
Cutting Chamber
The cutting chamber is a rectangular enclosure comprising the main frame, the bed knives,
the bed knife shields, a balanced rotor and a screen.
The main frame of the cutting chamber carries the bed knives and the bed knife shields. The
H Series, helical hog models do not have downstroke bed knife shields. The downstroke
bed knife shield is adjustable.
The screen is supported in position below rotor and acts as a separating barrier to the
granulated material, retaining the material in the cutting chamber until the particle size is
such that it will pass through the screen holes.
The rotor carries the rotor knives. The rotation of the rotor produces a cutting action between
the rotor and the stationary bed knives, thus reducing the material size.
Drive System
The rotor is indirectly driven by the motor through v-belts. The motor shaft pulley, v-belts,
and the rotor shaft pulley are shielded by safety guards or sound enclosure.
The motor is mounted on an adjustable sliding base, which is mounted at the left end of the
granulator.
Chapter 2: Functional Description 12 of 37
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Discharge System
The granulated material that falls through the screen is collected by the customer’s Gaylord
box.
On models fitted with an airveying system (optional), the granulated material that has fallen
through the screen is collected in a transition piece located beneath the cutting chamber. The
transition piece is connected to a blower, which conveys the granulated material to drop out
of the air system into a container.
Base
The base is a floor mounted drum and Gaylord type supporting the cutting chamber on its top
surface and the Gaylord chute from below the top surface. This base should be fastened
securely to the surface beneath it.
2-4 Safety Features
Motor Starter
A magnetic motor starter with control transformer must be used when safety switches are
installed. Manual starters should not be used under any conditions.
Safety Switches
Safety switches at all access covers are wired into the starter control circuit. The machine
cannot be started when these parts are open. However, for safety purposes, the machine
should be disconnected from the power lines by a disconnect switch or by removing the plug
from its receptacle. Check all safety switches periodically for proper operation.
Safety Tags
A set of metal plates is attached to the machine to warn of potential danger.
Brake Motors (Optional)
An integral brake stops the motor within a few seconds of actuation of the stop button, greatly
reducing the time required for the rotor to stop.
Sound Reduction Equipment
Sound reduction equipment will bring the sound level of your machine to within the
limitations of the Occupational Safety and Health Act. Material, part configuration, feed rate
and ambient noise level must be specified at the time of inquiry.
Chapter 2: Functional Description 13 of 37
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Chapter 3: Installation
3-1 Uncrating the Equipment
The complete granulator, including accessory and auxiliary equipment, is skidded for
shipment. Refer to the Appendix for detailed dimensional data and pertinent weights.
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
machine should be set on a concrete floor, and care must be taken when moving the machine
across a hollow timber floor, so that the point loading of the casters does not cause damage.
The site you have selected must have a floor rating to adequately support the weight of the
machine. If necessary, use steel shims to level the machine.
Locate the machine so that access is given to electrical components, screen and hopper.
Maintenance personnel should have unobstructed access to the units on which they will be
working.
To avoid squeezing people working near a machine, there should be adequate clearance
maintained between machines, walls, or partitions. Hinged doors and covers should have full
swing. Restrictions may force work in cramped quarters. An off-balance operator with an
awkward reach into a partially obscured area is unsafe.
If inspection after shipment has revealed no shipping damage, unpack the unit by removing
all hold-downs, tie-downs, bolts, nuts, etc. Remove the envelope with the electrical
schematics and instruction manual from the base evacuation area.
You can now have the machine lifted from the skid. 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. Use the designated lifting point, and DO NOT lift
the machine by the hopper handles or guards.
Because of the size and weight of the granulator, we recommend that only
qualified riggers be employed to unpack and locate the granulator.
3-2 Belt Tensioning
Tension the belts at the maximum recommended force. Check the tension at least twice
during the first day of operation. See Section 5-5 on page 23 for the belt tensioning
procedure.
3-3 Electrical Connections
Granulator controls (if ordered) are shipped separately for mounting at a suitable location.
The safety switches are connected to a common terminal box for ease of wiring. The
customer is required to provide a suitable fused supply with a disconnect switch and a cable
for the incoming line to the starter.
Refer to the technical specifications in the Appendix for horsepower, voltage, phase and
frequency requirements to determine the size and rating of the supply cable required.
If optional controls are required, an electrical wiring diagram will be provided with the
machine in addition to the basic electrical diagram.
Chapter 3: Installation 14 of 37
Page 15
When the customer is providing either the motor or the starter, the machine must be wired in
accordance with the basic electrical diagram and the starter manufacturer’s instructions.
Use the following procedure to complete the electrical connections:
1. Check to be certain that the starter heater elements correspond with the motor
requirements. If controls are not supplied, the limit switches supplied on the machine
must be wired into the circuit at the common terminal box.
2. Check that the limit switches are closed.
3. Turn switch ON at main power supply.
4. Jog motor by pressing the START and then the OFF button. This starts and stops the
motor.
5. With the electrical power ON, check that the motor rotates in a clockwise direction at
the viewing port in the belt guard. If motor rotation is correct, continue to the next
step. If rotation is incorrect, complete the following procedure:
a. Shut power OFF and disconnect incoming power supply.
b. Reverse any two of the three power line connections to the machine.
c. Re-connect the incoming power supply line and turn ON the main power
switch to recheck motor drive rotation.
6. If Airveying system (optional) is fitted, press the Airveyor START button and check
the blower motor rotation. The blower motor should rotate in a counter clockwise
direction. If blower motor rotation is correct, continue to step 7. If blower motor
rotation is incorrect, complete the following procedure:
a. Shut power OFF and disconnect incoming power supply line.
b. Reverse any two of the three power connections to the blower motor.
c. Re-connect the incoming power supply line and recheck the blower motor
rotation.
7. Allow all motors to run up to speed for at least 30 seconds.
3-4 Accessing the Cutting Chamber
You will need to access the cutting chamber before initial startup and for various
maintenance procedures. Use the following procedure to access the cutting chamber:
1. Turn main power off, remove the line fuses and tag the machine as out of service.
2. Remove the hex head bolts on the outside corners of the cutting chamber covers.
This will disengage the safety switches.
3. Remove the center plate connecting the two doors and then remove the remaining
bolts around the doors to free them from the cutting chamber.
4. The doors are attached to support arms that swing the covers outward and away from
the chamber using the handles that are provided on each cover.
5. Back out the bolt wedges (5 per side on 72B) holding the screen cradle in place.
6. Once the cradle is free and the base is clear of any obstructions the pneumatic
cylinders can be activated to lower the cradle.
Chapter 3: Installation 15 of 37
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3-5 Closing the Cutting Chamber
After completing any maintenance or adjustments inside the cutting chamber, use the
following procedures to close the cutting chamber and resume use of the granulator:
1. Replace the screen and activate the pneumatics to raise the screen cradle
2. Reinsert the bolt wedges to lock in the screen cradle. (5 on 72B per side)
3. Swing the cutting chamber doors back into their closed position and replace bolts.
4. Replace bolts activating the safety switches to signal the doors are closed and tight.
5. Rotate the rotor by hand from outside the machine to check that no tools, gauges, or
loose parts have been left on or in the machine.
6. Replace line fuses, turn power on, and remove the “Out of Service” tag from the
machine.
Chapter 3: Installation 16 of 37
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3-6 Initial Start-up
This machine has been run under power and tested at the factory prior to shipment. The
necessary settings and adjustments have been made so that a minimum amount of setting up
or re-adjustment is required when starting up the machine in its new location.
With all electrical, mechanical connections and lubrication requirements having been
attended to, the following start-up steps should be carefully carried out before attempting to
place any material into the infeed hopper. Use the following procedure to prepare the
machine for initial start-up.
Before operating the granulator, insure that the granulator has been correctly
assembled and wired.
1. Access the cutting chamber as described in Section 3-4 on page 15.
2. Thoroughly clean the rust preventative materials or grease from the inside of the
cutting chamber and screen.
3. Check all rotor knives to make sure they are properly seated on the rotor and securely
fastened. Although they are ground as set, one knife will probably be .001” to .002”
higher than the others. This should be marked and used when adjusting the bed
knives for proper clearance.
4. Use a feeler gauge to check the clearance between the rotor and bed knives by
turning the rotor backwards. Rotating the rotor backwards gives a better feel and does
not cut the gauge, should the knives be too close. Check the knives on each end only.
Proper clearance is 0.005” to 0.008” for most materials. 0.014” to 0.016” for solid
wall pipe with 0.187” wall thickness or greater. This clearance is slightly greater at
the center of the knives.
Note: Recheck knife clearance after the first 24 to 36 hours of operation.
5. To make the adjustment on the bed knives, the bed knife bolts should be hand
tightened to hold the knife firmly against the knife seat while adjusting the knife
forward using push and pull screws. After the clearance is set, torque the screws
according to Section 5-3 on page 21.
6. With the exposed parts of the machine thoroughly clean, and all knife clamping bolts
securely fastened, close the cutting chamber as described in Section 3-5 on page 16.
Note: After initial start-up, the rotor knife retaining screws should be checked after
8 hours running to be assured that the proper torque is maintained.
Thereafter, rotor knife retaining screws should be checked weekly.
Note: The rotor must be rotated at least two rotations every 30 days to prevent
brinnelling and corrosion of raceways.
Chapter 3: Installation 17 of 37
Page 18
Chapter 4: Operation
4-1 Start-up and Operation
Before starting the machine, check that the rotor rotates freely by rotating it by hand from
outside the machine using either the coupling or the sheave depending on the type of drive.
Inspect the cutting chamber carefully to insure that nothing has fallen into it. Make sure all
screws and bolts are properly secured. Check all electrical connections and motor rotations.
See Chapter 3 on pages 14-17 for detailed start-up instructions. Allow all motors to run up to
speed for at least 30 seconds.
4-2 Feeding the Granulator
Feed the granulator through the opening in the hopper. The method of feeding the granulator
depends on the physical form and nature of the material being processed.
For maximum efficiency, the granulator should be fed at a rate that is consistent with its
capacity; i.e., if the granulator is rated at 3,000 lbs./hr. (1360 kgs./hr.), then the general feed
rate is 50 lbs./min (23 kgs./min). Under these operating conditions, the correct proportions of
cut and uncut particles will be present in the cutting chamber.
Under no circumstances should the operator attempt to reach into the hopper to
dislodge any bridge or jammed material while the granulator is in operation. To
clear the hopper of bridged or jammed material, the machine main power must
be turned off and the machine isolated.
4-3 Clearing a jammed Cutting Chamber
Never attempt to free a jammed machine by placing hand on the rotor, rotor knives, or inside
the cutting chamber. Hands must be kept clear of the rotational path of the rotor knives.
Good footing on a clean floor is essential and the body should be well braced to guard against
loss of balance should the jam suddenly come free. Use the following procedure to clear a
jammed cutting chamber.
1. Disconnect and lock out power.
2. Be certain that the rotor is motionless.
3. Open the machine as instructed in Section 3-4 on page 15.
4. Use a pry bar to exert force on the rotor, usually in the direction opposite normal
rotation. A leather mallet and a block of wood of sufficient length to keep hands
away from path of knives can be used if necessary.
5. Use pliers to remove material from the cutting chamber, keeping in mind that the
removal of material may cause rotation of the rotor and rotor knives.
6. After cleaning the jam, be certain that the screen and all guards and covers are
secured in place before connecting power and starting the machine.
Chapter 4: Operation 18 of 37
Page 19
4-4 Shut-down
Use the following procedure to properly and safely shut down the machine:
1. Stop all feeding of material
2. Allow the granulator to run until the cutting chamber is completely empty.
3. Press the drive motor “stop” button. This shuts off the rotor drive motor.
4. After the granulator has stopped, press the airveyor stop button (if applicable) located
at the blower motor.
5. Turn the main power switch to off.
Chapter 4: Operation 19 of 37
Page 20
Chapter 5: Maintenance
Check
Frequency
Knife retaining screws for tightness
Weekly
Knife exposure
Weekly
Shield retaining screws for tightness
Weekly
Screen retaining studs for tightness
Weekly
Lubrication of drive motor bearings
Monthly
Screen Wear
Monthly
Belt Tension
Monthly
Hopper and cutting chamber screws are tight
Monthly
5-1 Preventative Maintenance Schedule
Knife clearance Weekly
Lubrication of rotor bearings Monthly
5-2 Lubrication
Lubrication of rotor bearings should be based on the size and type of bearing, the RPM at
which the rotor is turning, and the temperature at which the bearing is operating.
The size of the bearing will determine the amount of grease required. The RPM, bearing type,
and size of the bearing will determine the frequency of lubrication. Higher than normal
temperatures will determine the amount of grease required.
New Bearings
Bearings are initially lubricated at the factory prior to shipment. However, when assembling
new bearings and before bearing caps are installed, fill every third cavity of the bearing using
a hand grease gun, and then rotate the shaft by hand to distribute the grease. Fill the bearing
cavity 1/3 full of grease.
A hand-operated grease gun is preferred over a power grease gun because of better control of
pressure and quantity dispensed. This tends to prevent over-greasing and damage to seals.
Run the machine and observe drainage from the bearing housing. If a soupy discharge is
observed (indicating oil separation), then add a couple of sots of grease from a hand gun at
intervals until the discharge is no longer soupy.
Re-Lubrication
A new granulator rotor bearing should be greased after the first two weeks of operation, and
then re-lubricated every 2-4 weeks, depending on the duty cycle. Continuous operation (24
hours a day) at a maximum capacity would require lubrication every 2 weeks. Internittent
operation and/or light duty intervals could require lubrication every 4 weeks.
Chapter 5: Maintenance 20 of 37
Page 21
The period during which a grease-lubricated bearing will function satisfactorily without relubrication depends on the bearing type, size, speed, operating temperature, and the grease
used. Re-lubrication intervals (hours of operation) are valid for bearings in machines where
loading conditions are normal: an age-resistant, average quality grease is used and the
operating temperature is below 158°F (70°C) measured at the outer ring.
Re-lubrication intervals should be halved for every 27°F (15°C) increase in the temperature
above 158°F (70°C). The maximum permissible operating temperature for the grease must
not be exceeded.
Note: Re-lubrication intervals may vary significantly even where apparently similar
greases are used.
Where there is a high risk of the grease becoming contaminated, the re-lubrication frequency
should be increased. This reduction also applies to applications where the grease is required
to protect against moisture. These bearings should be re-lubricated once a week.
We recommend using 2-4 ounces of grease when re-lubricating. Recommended grease are
Sun Presitge #741EP or Mobilux EP2.
5-3 Replacing and Adjusting the Knives
During use, the clearance between the rotor knives and the bed knives will increase due to
wear. This is a normal condition that requires re-setting this clearance once or twice before it
is necessary to remove the knives for regrinding. Check the knives weekly for wear,
clearance, exposure and screw tightness.
When new knives are fitted to the machine, adjustment after eight hours of running time may
be required.
Before assembling a new or reground set of knives, make sure the knife seats and mounting
holes are clean. Do not use grease or oil on screws or tapped holes when assembling the
knives.
Knives must be replaced in complete sets; otherwise it will not be possible to obtain even
clearance between the rotor knives and bed knives.
Before applying a wrench to any knife bolt, be certain that the rotor is
blocked to prevent rotation. One such method is to use a block of wood at
least 1 1/2” thick between a knife and a fixed portion of the frame.
Rotor Knives
We recommend that the rotor knife screws be replaced with new screws every sixth knife
change to reduce the risk of screw failure due to overstretching. Screws must be replaced
with the type specified in the spare parts list. Use the procedure to replace or adjust the rotor
knives.
Rotor knives should be changed one seat at a time to prevent rotor from
being rotated in and out-of-balance condition.
1. Access the cutting chamber as directed in Section 3-4 on page 15.
2. Loosen check nuts on bed knife adjusting screws and back off screws
3. Remove bed knife shields.
4. Disengage bed knife pull screws
5. Remove the bed knife bolts and bed knives.
Chapter 5: Maintenance 21 of 37
Page 22
6. Remove rotor knife bolts and knives on one seat. This should be done from the
downstroke side of the cutting chamber.
7. Thoroughly clean knife set.
8. Install new knife on seat and tighten knife bolts. See Section 7-2 on page 30 for
torque recommendations.
Note: Bolt threads should be oiled. Wipe thread with an oil-dampened cloth.
9. Repeat steps 6 through 8 for each rotor knife.
Bed Knives
We recommend that the same screws and washers be re-used only when the bed knives have
been repositioned or re-ground. When blunt knives are discarded and replaced with new
knives, use new screws and washers. This will reduce the risk of screw failure due to their
overstretching. Screws and washers must be replaced with the type specified in the Spare
Parts List. Use the following procedure to replace or adjust the bed knives:
1. Access the cutting chamber as directed in Section 3-4 on page 15.
2. Loosen the check nuts on the bed knife adjusting screws and back off screws.
3. Remove the bed knife shields.
4. Disengage the bed knife pull screws.
5. Remove the bed knife bolts and bed knives.
6. Before installing and adjusting the bed knives, check all rotor knives to make sure
they are properly seated on the rotor and securely fastened.
7. Place the downstroke bed knife and its shield in place and hand-tighten the knife
bolts to hold them firmly to the knife seats.
8. Using the push and pull screws to set the knife clearance to 0.005” to 0.008” for most
materials; 0.014” to 0.016” for solid wall pipe with 0.187” wall thickness or greater.
The clearance should be measured with a feeler gauge at the ends of the knife, by
rotating the rotor sheave backwards by hand. The clearance is slightly greater at the
center of the knives.
9. Adjust the shield using its push and pull screws so that its front edge is within 1/16”
of the bed knife edges.
10. Tighten all bolts using the recommended torque valves in Section 7-2 on page 30.
11. Repeat steps 7 through 10 for the upstroke bed knives.
Chapter 5: Maintenance 22 of 37
Page 23
Adjustment bolts
5-4 Sharpening the Knives
Under normal operating use, the cutting edge of the knives will eventually become dulled,
resulting in reduced cutting efficiency. The blunt knives may either be re-ground to restore
the cutting edge, or replaced with new knives when regrinding is not possible.
When sharpening, it is not harmful to allow a few small nicks to remain in the cutting edge.
Grinding the cutting edge until perfectly clean can sometimes be wasteful.
5-5 Adjusting Belt Tension
For continuous reliable operation of the granulator, it is important that the belt tension is
correct. Correct tension reduces wear on rotor and motor bearings and keeps belt slip to a
minimum. Figure 2 below gives the recommended force to deflect each belt by an amount
equal to the belt span divided by 64. A gauge is available through the sales department to
measure the deflection and force. Use the following procedure to adjust the belt tension:
1. Turn off the granulator at the main isolator switch and remove fuses.
2. Remove the cover to gain access to the belts.
3. Turn the adjusting screw on the motor slide base to tension the belts as required
4. Re-tighten the screws, making sure the pulleys are in correct alignment.
Chapter 5: Maintenance 23 of 37
5. Replace the covers.
Page 24
1. Verify that the alignment of the pulley is correct. Utilizing a straightedge of
sufficient length to span from one pulley to the other, place it along the sides
of both pulleys. The entire face of each pulley should fully contact the
straightedge.
2. Measure the belt SPAN with a measuring tape. Record this dimension in
your note book.
3. Using the deflection tester, apply a perpendicular force at the midpoint of any
one of the belts to deflect the belt 1/64th of an inch.
4. Calculate the deflection force:
FORCE[Lb]= SPAN[IN] X (1/64)[Lb/IN]
5. Identify the belt type and measure the small sheave diameter. Look up the
proper model belt deflection force table and find out what the force is
supposed to be.
6. The motor position should be adjusted until the actual deflection force
matches the force listed in the table.
7. In no case should the belts be over tensioned, as this can significantly reduce
belt and/or bearing life
Chapter 5: Maintenance 24 of 37
Page 25
Figure 2: Belt Tensioning Information
V-BELT CROSS
SMALL SHEAVE
SMALL SHEAVE
SPEED
RECOMMENDED
MIN
MAX
3V
2.65-2.80
1200-3600
2.00 TO
3.0
4.3
3.00-3.15
1200-3600
3.3
4.8
3.35-3.65
1200-3600
3.7
5.4
4.12-5.00
900-3600
4.4
6.4
5.30-6.90
900-3600
4.8
7.1
5V
7.10-8.00
600-1800
2.00 TO
11
16
8.50-10.90
600-1800
13
18
11.80-16.00
400-1200
14
21
8V
12.50-17.00
600-1200
2.00 TO
28
41
18.00-24.00
400-900
32
48
SECTION
DIAMETER RANGE
(INCHES)
RPM RANGE
RATIO
RANGE
4.00
4.00
4.00
5-6 Rotor Bearing Replacement
Use the following procedure to remove and replace the rotor bearings:
DEFLECTION
FORCE (LB)
Chapter 5: Maintenance 25 of 37
1. Shut off the machine and the main power disconnect.
2. Remove the flywheel guard and drive belts
3. Loosen the flywheel sheave bushings and bolts, and remove the shaft end cap.
Remove the flywheel and bushing. Loosen bolts on the bearing end cap and sheave
spacer.
4. Clean grease and dirt from the bearing’s exposed surfaces and shaft surfaces.
5. Remove the bearing housing containing the bearing from the shaft using the
symmetrical pattern for push screws in the bearing housings.
6. Note the condition of the shaft journal and clean and dress the surface to remove all
irregularities before installing the new bearing.
7. Replace the bearing housing in its correct position and tighten the ¾ - 16 bolts to
400 ft. lbs.
8. Clean the bearing bore surface and the shaft journal.
9. Install the bearing on the shaft journal by lightly tapping the inner race in a uniform
fashion until it bottoms out on the bearing housing seat.
Page 26
10. Pack grease between the bearing rollers and re-install the sheave spacer and bearing
end cap. Tighten the ½-20 bolts to 58 ft. lbs.
11. Replace the flywheel/sheave bushing without tightening the bushing bolts. Replace
the shaft end place and tighten the 5/8-18 bolts to 144 ft. lbs. so that the flywheel
bushing and sheave spacer are locking the bearing inner race to the shaft shoulder.
12. Tighten the sheave bushing to the flywheel/sheave. Replace and adjust the belts.
Replace the covers.
Chapter 5: Maintenance 26 of 37
Page 27
Chapter 6: Troubleshooting
Problem
Possible Cause
Possible Remedy
Motor fails to start
Supply failure
Check fuses
Starter inoperative
Check main supply
Starter overloads or cuts out
Check motor requirements and
Safety switches inoperative
Check and adjust as needed
Motor starts but will not take
Too much belt tension
Check belt tension and adjust as
Incorrectly connected motor
Check terminal connection with
Defective starter winding
Check current in each phase
Motor will start when
Worn bearings
Check and replace if necessary
6-1 Introduction
The utmost in safety precautions should be observed at all times when working on or around
the machine and the electrical components. All normal trouble-shooting must be
accomplished with the power off, line fuses removed, and with the machine tagged as out of
service.
The use of good quality test equipment cannot be over-emphasized when troubleshooting is
indicated. Use a good ammeter that can measure at least twice the AC and DC current that
can be encountered for the machine. Be sure that the voltmeter has at least minimum
impedance of 5,000 OHMS-per-volt on AC and 20,000 OHMS-per-volt on DC scales.
Popular combination meters, VOM and VTVM can be selected to provide the necessary
functions.
Before making haphazard substitutions and repairs when defective electrical components are
malfunctioning, we recommend that you check the associated circuitry and assemblies for
other defective devices. It is common to replace the obviously damaged component without
actually locating the real cause of the trouble. Such hasty substitutions will only destroy the
new component. Refer to wiring diagrams and schematics.
Locating mechanical problems, should they occur, is relatively straightforward. When
necessary, refer to the parts catalog section.
6-2 Electrical Faults
load
disconnected from load but not
when connected
adjust accordingly
necessary
manufacturer’s connection
diagram and adjust as necessary
with ammeter, if there is a
marked difference in current in
one phase, contact motor
manufacturer
according to manufacturer’s
literature
Chapter 6: Troubleshooting 27 of 37
Page 28
6-3 Processing Faults
Problem
Possible Cause
Possible Remedy
Stalling
Overfeeding
Reduce feed rate
Partial or complete screen
Remove screen, clear and
Insufficient tension on v-belt
Check tension of the belt and
Badly blunted or damaged
Fit re-sharpened or new knives
Installation fault; motor running
Check with direction arrow and
Safety switch cut out where
Tighten safety switch setting
Material overheating
Check all possible causes under
Remedy as shown above
Screen size too small
Increase screen size
When granulating rubber,
Increase talc percentage rate of
Blockage in airveyor
Check direction of fan rotation,
blockage
drive causing belt slip and
burning
knives
Knife setting too wide Check clearances given and
in reverse direction
fitted
“stalling”
insufficient talc causes freshly
cut surfaces to re-adhere
inspect for damage
adjust as necessary
as required
adjust as required
re-fit electrical connections to
give the correct direction
screw
infeed
check venture and line or chute
for blockage
Chapter 6: Troubleshooting 28 of 37
Page 29
6-4 Mechanical Faults
Problem
Possible Cause
Possible Remedy
Bearing overheating
Excessive tension on belt drive
Check tension of belt and adjust
Visible cracks in knife
Incorrect grinding or grinding
Check method of grinding and
Knives moving on knife seats
Uneven knife seat surfaces
Clean up to provide maximum
Knives breaking
Cracks caused by incorrect
Contact our technical sales
as necessary
Lubrication fault Check lubrication frequency
and recommended lubricant
procedure
Loose knife screws Knife screws should not be
grinding
Excessive knife wear Open knife setting Re-set knives
Screen breakage Incorrectly seated screen Check that the screen is seated
contact our technical sales
department
bearing surface
used more than six times.
Replace if there is evidence of
stretch
department
correctly and fully in its cradle
Chapter 6: Troubleshooting 29 of 37
Page 30
Chapter 7: Appendix
MM Screw Size
6 8 10
12
16
19
20
24
Inch Screw Size
1/4
5/16
3/8
7/16
1/2
5/8
3/4
7/8
1
Torque Ft. Lbs.
13
26
46
76
110
220
400
635
870
7-1 Recommended Torque for Screws
(Grade 8 alloy steel heat-treated screws)
Note: Threads must be dry. Screw threads should be wiped with an oil-dampened cloth
before installation to prevent galling.
7-2 Technical Specifications
Features
Model Throat Size
62B
72B
20” x 62”
(510x1575 mm)
20” x 72” (510 x
1830mm)
Cutting Circle
Diameter
18” (457 mm)
18” (457 mm)
Throughput
4500 lbs/hr
(2045 kg)
5000 lbs/hr
(2272 kg)
Approx.
Weight
22,000 lbs
(10,000 kg)
26,000 lbs
(11818 kg)
Chapter 7: Appendix 30 of 37
Page 31
Specifications
Standard
Standard Options
5-Knife high shear; 3-Knife steep
Blower, Cyclone, Separator,
Conveyor
Infeed Conveyor Feed
2-Bed Knife
Cutting Chamber Rotor
Open 3-Knife high shear
Rotor Knives (3) HCHC (5) HCHC, Steep angle, 55 degree
Bed Knives (2) HCHC Raised D/S
Screen 3/8" N.H.T. 1/4" and larger, H.T.
Drive Parts V-Belt
Electrical Components NEMA12 with safety locks
Controls Customer Supplied 230, 460, or 575 volt, NEMA 12
Labels Safety/caution/operation labels
Accessories
Tray and sheet feed; Tray and feed
Hard facing, water cooling, air purge
angle; 5-Knife S/A, 7-knife S/A (62B
rolls; Pipe Feed
bearings
and 72B only)
Chapter 7: Appendix 31 of 37
Page 32
62B
72B
7-3 Drawings
Chapter 7: Appendix 32 of 37
Page 33
Chapter 7: Appendix 33 of 37
Page 34
Chapter 7: Appendix 34 of 37
Page 35
Chapter 7: Appendix 35 of 37
Page 36
7-4 Technical Assistance
Parts and Service Department
The ACS Customer Service Group will provide your company with genuine OEM quality parts
manufactured to engineering design specifications, which will maximize your equipment’s performance and
efficiency. To assist in expediting your phone or fax order, please have the model and serial number of
your unit when you contact us. A customer replacement parts list is included in this manual for your
convenience. ACS welcomes inquiries on all your parts needs and is dedicated to providing excellent
customer service.
For immediate assistance, please contact:
North, Central and South America, 8am – 5pm CST +1 (800) 483-3919 for drying, conveying,
heating and cooling and automation. For size reduction: +1 (800) 229-2919.
North America, emergencies after 5pm CST (847) 439-5855
North America email: acsuscanadacustserv@corpemail.com
Mexico, Central & South America
Email: acslatinamericacustserv@corpemail.com
Europe, Middle East & Africa +48 22 390 9720
Email: acseuropecustserv@corpemail.com
India +91 21 35329112
Email: acsindiacustserv@corpemail.com
Asia/Australia +86 512 8717 1919
Email: acsasiacustserv@corpemail.com
Sales and Contracting Department
Our products are sold by a worldwide network of independent sales representatives. Contact our Sales
Department for the name of the sales representative nearest you.
Let us install your system. The Contract Department offers any or all of these services: project planning;
system packages including drawings; equipment, labor, and construction materials; and union or non-union
installations.
For assistance with your sales or system contracting needs please Call:
North, Central and South America +1 (262) 641-8600 or +1 (847) 273-7700
Monday–Friday, 8am–5pm CST
Europe/Middle East/Africa +48 22 390 9720
India +91 21 35329112
Asia/Australia +86 512 8717 1919
Facilities:
ACS offers facilities around the world to service you no matter where you are located. For more
information, please visit us at www.acscorporate.com
United States:
ACS Schaumburg
1100 E. Woodfield Road
Suite 588
Schaumburg, IL 60173
Phone: + 1 847 273 7700
Fax: + 1 847 273 7804
ACS New Berlin
2900 S. 160
New Berlin, WI 53151
Chapter 7: Appendix 36 of 37
Phone : +1 262 641 8600
Fax: + 1 262 641 8653
th
Street
Asia/Australia:
ACS Suzhou
109 Xingpu Road SIP
Suzhou, China 215126
Phone: + 86 8717 1919
Fax: +86 512 8717 1916
Europe/Middle East/Africa:
ACS Warsaw
Ul. Działkowa 115
02-234 Warszawa
Phone: + 48 22 390 9720
Fax: +48 22 390 9724
India
ACS India
Gat No. 191/1, Sandbhor Complex
Mhalunge, Chakan, Tal Khed,
Dist. Pune 410501, India
Phone: +91 21 35329112
Fax: + 91 20 40147576
Page 37
Chapter 7: Appendix 37 of 37
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