Operation and Installation Manual Seven Series Granulators
Contents
1. Crown 2 Mobilith AW2 Alvania EP LF 2 Sunaplex 2 Multifack EP2 NOTE If necessary the bearings should be lubricated with care Too much grease applied to the bearings at one time can rupture the bearing seals 708 712 716 Page 29 CG2 61 6 9 2 Motor amp Belts Servicing The Seven Series comes equipped with a self tensioning devise that constantly adjust an idle eliminating the need to tension the belt Belt pulleys Located on left hand side of unit under the sheave guard 1 Verify that the alignment of the pulleys 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 edge of each pulley should fully contact the straightedge 9 3 Knife Removal amp Adjustment NOTE The rotor and bed knives are subjected to severe work and it is recommended they be inspected periodically for sharpness The sharper the knives are kept the better the machine will operate and the better the quality of granulate it will produce Waiting until the knives have been severely rounded chipped Page 30 708 712 716 Granulators or otherwise damaged will result in heavy shock loading during operation causing a subsequent reduction in knife life For resharpening diagrams refer to Figure 4 1 Shut OFF and lockout all power including the main disconnect switch 2 Follow instructions in Section 4 on opening the cutting chambe2. and clamps in the reverse of removal Make sure the knives are fully back against the knife adjusting screws and loosen the adjusting screw checknuts slightly Do not torque the socket cap screws fully at this point snug them down only CAUTION New or resharpened knives should be handled with extreme care It is suggested that the sharp cutting edge be covered with tape to prevent damage o the knives or injury to personnel during installation 2 Align a rotor knife with the primary bed knife in the front of the granulator With a 006 feeler gauge between the rotor and bed knife start to adjust the bed knife into the rotor knife using the adjusting screw During the movement of the bed knife slowly rotate the rotor back and forth checking the clearance The proper clearance will be established across the length of the knife when a slight drag is felt on Page 36 708 712 716 Granulators the feeler gauge Partially tighten the bed knife socket cap screws Follow this procedure for all remaining bed knives Adjusting screws in metric Primary Bed Knife _ y d pe 3 Ifyou find a high rotor knife mark it and adjust to this knife 4 Once knife adjustments are completed equally and fully torque the bed knife cap screws working from the center out towards the ends of the knife Refer to Section 9 11 for the correct torque values based upon bolt size and thread pitch 5 Re check
3. 30 NELMOR SIZE REDUCTION Operation and Installation Manual Seven Series Granulators Important Read Carefully Before Attempting to Install or Operate Equipment Write down your granulator serial numbers here for future reference Nelmor can advise you on proper selection and sizing of systems for your operating environment Nelmor is committed to a continuing program of product improvement Specifications appearance and dimensions described in this manual are subject to change without notice Effective 4 30 2010 DCN No Copyright Nelmor 2003 All rights reserved 708 712 716 Page 2 CG2 61 6 1 Safety Considerations Nelmor 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 M LEARN AND OBEY your company s safety policy regarding granulating equipment Mi 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 tot
4. Absb 708 712 716 Page 33 CG2 61 6 Med POLYETHYLENE PE Energy Absb High E V A Energy Absb X POLYPROPYLENE Energy Absb P P POLYPROPYLENE Energy Absb OXIDE P V D C STYRENE G P Friable i x X x STYRENE M ID Friable STYRENE HI Energy Impt POLYSULFONE GLS REIN P V C Rigid Energy Impt P V C Flex Energy Absb PHENOLIC TPR 9 7 Rotor Knife Installation 1 Carefully block the rotor with a piece of wood to prevent it from turning 2 Re install the rotor knives onto the rotor Do not torque the hex head rotor knife bolts fully at this point snug them down only CAUTION New or resharpened knives should be handled with extreme care It is suggested that the sharp cutting edge be covered with tape to prevent damage to the knives or injury to personnel during installation 3 Check that the heel of the rotor knife is tight up against the knife seat Utilizing a 003 feeler gauge try to insert it between the heel of the knife and the knife seat at both ends and across the rotor knife If the feeler gauge will not go down between the heel of the knife and the knife seat the knife is installed correctly 4 Torque down the rotor bolts Start from the center of the knife and torque down the bolts equally working towards the ends of the knife Refer to Section 9 11 for the correct torque values based upon bolt sizes and thread pitch After Page 34 708 712 7
5. efficient continuous evacuation of granulate from the machine Nelmor offers a large variety of fan configurations The following information is intended to be representative of the basic functioning and design of a fan rather than being specific to one particular configuration Please follow the instructions listed below for optimal fan operation if your unit is equipped with this option 7 3 Granulator Startup Checklist M K A N AA AA BW 708 712 716 Have all installation and preparation instructions been read and followed Have the granulator operator and all other necessary personnel been fully trained on machine operation and all safety mechanisms Have sufficient location clearances been allowed Has the equipment been grounded as required by local codes and or Article 250 of the National Electric Code Have all motors been checked for rotation Have all machine controls pushbuttons and limit switch safeties been checked for proper functioning Have the cutting chamber and screen chamber been checked for foreign matter Have the drive belts and optional fan drive belts been checked for alignment and tension Is the machine properly closed with all visible fasteners tight Page 25 CG2 61 6 Are all accessory components electrically and mechanically connected with proper support and with all fasteners tight Are cyclonic air separator and filter units empty optional equipment Has the fan optional bee
6. proper fan Shut the machine down evacuation and clean Rotor speed is too fast Change the pulleys Screen size is too small Change to a screen with larger holes 708 712 716 Page 43 CG2 61 6 12 Spare Parts List a I 12 1 Recommended Spare Parts In order to reduce the amount of down time required to service a granulator it is recommended that the following be kept in stock at your facility 1 set of rotor knives and bolts 1 set of bed knives and bolts 1 screen or set of screens depending if your model requires multiple screens 1 set of belts 1 set of fuses 1 set of motor starter heaters 1 cyclone filter bag optional 12 2 Additional Parts If additional spare parts are required for your granulator please consult the Nelmor Spare Parts Express Department The serial numbers of the specific components will be required when ordering parts from Nelmor NOTE Refer to part numbers in the spare parts catalog when ordering replacement parts Check the parts carefully as knives and screens generally have their numbers etched or stamped on them The serial number of the machine will be required when ordering parts from Nelmor This listing of recommended parts does not include all parts which are available for purchase The Nelmor Parts Department can be reached via a toll free number 1 800 229 2919 Page 44 708 712 716 Granulators Service Notes 708 712 716 Page 45 CG2 61 6 Servi
7. specifications for these granulators Additional sections within the manual provide instructions for installation pre operation preventative maintenance and corrective maintenance Section 2 Shipping Information includes all required data for receiving unpacking amp inspecting the granulator Section 3 Installation provides information on the proper setup of the granulator Also included are illustrations which will aid in utilizing techniques to accomplish these tasks efficiently We can provide the assistance of a factory trained technician for a nominal charge who will help in training your operator s Pre operation Instructions include procedures checks and adjustments which 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 Troubleshooting Section is intended to serve both as a guide for identification and location of most common problems and as a source of detailed assembly and disassembly instructions for those areas of the equipment requiring service Page 8 708 712 716 Granulators The Spare Parts Section contains a partial list of recommended parts which may require replacement Refer to the Spare Parts Manual for a comprehensive listing of components which can be purchased 1 2 General Description Nelmor granulators are designed to uniformly and consistently size r
8. 16 Granulators the bolts on each knife have been fully torqued re check with a 003 feeler gauge between the knife and seat Use the same procedure on all remaining rotor knives 9 8 Bed Knife Sharpening Each bed knife is provided with two 2 cutting edges When the exposed edges become blunt the knives can be turned over and repositioned to present the new cutting edges It is not necessary to grind bed knives to the closely matched tolerance of the rotor knives and as with the rotor knives small nicks in the cutting edges will not seriously affect knife cutting efficiency Bed knives smaller than the minimum dimension shown must be replaced along with their fasteners It is important to note that the minimum dimensions given for the rotor knife and bed knife cannot be combined simultaneously to produce a cutting combination NOTE Replacement knife sets and knife resharpening services are available from Nelmor Contact the Customer Service Department at 800 229 2919 708 712 716 Page 35 CG2 61 6 Figure 5 Bed Knife Sharpening 50 DEGREE LAND ROTOR KNIFE OPERATING RANGE NEW KNIFE DIM A 1 MIN KNIFE DIMA 50 DEGREE LAND ROTOR KNIFE AY NEW T AY MIN 1 968 j 1 765 g e 8 a e na BED KNIFE MIN BED KNIFE NEW BED KNIFE f T F MIN T CMAX DIM B MIN DIM B 0 234 j 1 850 9 9 Bed Knife Installation amp Setting 1 Install the new or resharpened bed knives
9. 2 Electrical Test 708 712 716 10 11 12 12 12 14 14 15 17 17 17 17 19 20 21 21 21 22 22 23 24 24 24 Page 6 CG2 61 6 1 Table of Contents 7 Startup Checklist 26 7 1 Introduction 26 7 2 Fan Evacuation 26 7 3 Granulator Startup Checklist 26 8 Operation 28 8 1 Operation Instructions 28 8 2 Temporary Machine Stops 28 8 3 Final Machine Stops 28 8 4 Emergency Stops 29 9 Routine Maintenance 30 9 1 Lubrication Specifications 30 9 1 1 Description 30 9 1 2 Screw Jack Lubrication Instructions 9 2 Motor amp Belts Servicing 31 9 3 Knife Removal amp Adjustment 31 9 4 Rotor Knife Removal 33 9 5 Rotor Knife Sharpening 33 9 6 Recommended Knife Design Per Material 34 9 7 Rotor Knife Installation 38 9 8 Bed Knife Sharpening 36 9 9 Bed Knife Installation amp Setting 37 9 10 Preventative Maintenance Service 39 9 11 Recommended Torque For Knife Bolts 40 10 Troubleshooting 41 11 Spare Parts 44 12 1 Recommended Spare Parts 45 12 2 Additional Parts 45 708 712 716 Page 7 CG2 61 6 1 1 General Information 1 1 Introduction This manual is intended to be used as a guide and reference for personnel who will be installing operating and maintaining the Nelmor Seven Series Granulator The purpose is to aid these individuals in applying efficient proven techniques which will enhance productivity This Introduction includes a brief functional description a physical description and machine
10. 4 wood supports Cut steel banding 2 Usea pry bar to remove the blocks securing the unit to the skid 3 Insert forks between skid and granulator from the side guard side until they protrude beyond the opposite side of the unit The forks must be equidistant from the centerline of the unit and the unit must be balanced on the forks 4 Lift the unit off the skid with a fork truck Lift slowly and only high enough to clear the skid Use a pry bar if necessary to carefully remove the skid from the unit 5 Lower slowly The unit should land on its casters or rails and can then be moved into position 6 Temporary hardware has been installed to prevent side panels from shifting in transit Remove hardware Important Retain the crating material for reshipping the granulator in case hidden shipping damage is found Page 14 708 712 716 Granulators Seven Series Granulators Seven Series Granulators are shipped mounted on a skid enclosed in polyethylene and open crated on all four sides and top 1 Pry the crating away from the skid 2 Follow the instructions listed above 3 Use a pry bar to remove the blocks securing the unit to the skid 4 Lift unit from the sides guard side inserting forklift under the base into the lifting openings provided Use a pry bar if necessary to carefully remove the skid from the unit CAUTION DO NOT attempt to lift the granulator by means of any shaft or protruding member E
11. ER 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 M 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 M 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 feet on the granulator when it is in operation or open for maintenance NEVER stand on the granulator when it is in operation M ROTATION OF MOTORS All rotating items in the granulator are clearly marked on the machine Always check for proper rotation of motors M 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 Page 4 708 712 716 Granulators M ALWAYS DISCONNECT AND LOCKOUT THE MAIN ELECTRICAL POWER TO THE GRANULATOR BEFORE PERFORMING ANY SERVICE M SAFETY INTERLOCKS MUST NOT BE BYPASSED The mechanical and electrical safety interlocks ensure the safety of personnel They sho
12. G2 61 6 10 Troubleshooting Possible Cause Solution Verify that the correct pushbuttons are being depressed and that the main disconnect switch is in the ON position Try to locate grounds a locked rotor or other reasons Fuses are blown Replace fuses with the size and type shown on the wiring diagram located in the control enclosure Motor optional fan motor Check for motor and fan If required reset 1 MOL will not start overloads 2 MOL Check the limit switches at the cutting chamber screen chamber and hopper cleanout doors Ensure proper actuation and replace if required Check safety limit switch If fan is hinged type ne design optional a a it is making terminals 3 amp 5 After completing above Call Service Department inspection machine will still not start P Reduce amount of Machine is overloaded feedstock put into machine per unit of time Clear the jammed material then visually If a limit switch is open Machine stalls optional iammed in the rotor it is not damaged and that the knife gaps are correct Page 40 708 712 716 Granulators Possible Cause Solution Machine has loose or Machine stalls optional row m DENS fan stalls Optional Fan wheel is loose on shaft Overloading of the machine Inspect and if acceptable for use reinstall and tighten per instructions Tighten screws as required Reduce the amount of feedstock put int
13. SPECIALLY THE HOPPER Notes 708 712 716 Page 15 CG2 61 6 3 Installation 3 1 Scope 3 2 General 3 3 Set up Page 16 This section contains all instructions required for experienced installation personnel to install the Nelmor granulator and prepare it for production It is essential to follow all instructions carefully and in the sequence presented Be sure to observe all DANGER WARNING and CAUTION statements in order to prevent personal injury or machine damage and to observe all NOTE statements which are designed to assist in the performance of procedures The site selected for installation of the granulator should be prepared in advance Be certain that the area to be occupied by the machine is clean level and free of obstructions The site selected must have a floor rated to easily support the weight of the machine A concrete floor of 4 minimum in thickness is recommended Make certain the floor is clean level and free of obstructions before placing the machine into position Visually inspect the hopper infeed opening to insure that no stray packing material or debris are present 708 712 716 Granulators Fastener turn counter clockwise to loosen Loosen the fastener in the front of the cutting chamber Note that this fastener does not need to be completely removed from the upper cutting chamber as it is designed to be captive for convenience pull the cradle actuator towards the fro
14. al machine weight and the capability of the lifting equipment see the Granulator Specification Sheets for machine weights and dimensions Vi 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 V SAFE HOUSEKEEPING The work area must be kept clean and uncluttered to allow personnel safe movement around the granulator during periods of operation or maintenance No hand tools or other metal objects should be left on or about 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 708 712 716 Page 3 CG2 61 6 1 MVI 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 area of the hopper feed opening in order to guard against unexpected material flyback M EAR PROTECTION may be required when operating the machine during granulation or very hard noisy materials The Occupational Safety and Health Act of 1970 has established guidelines for Permissible Noise Exposures OSHA 1910 95 that should be followed M NEV
15. ator for possible shipping damage If the container and packing materials are in re usable condition save them for reshipment if necessary Thoroughly check the equipment for any damage that might have occurred in transit In case of breakage damage shortage or incorrect shipment refer to the following sections 2 2 In the Event of Shipping Damages Important According to the contract terms and conditions of the Carrier the responsibility of the Shipper ends at the time and place of shipment Mi Notify the transportation company s local agent if you discover damage Mi Hold the damaged goods and packing material for the examining agent s inspection Do not return any goods to Nelmor before the transportation company inspection and authorization Mi File a claim against the transportation company Substantiate the claim by referring to the agent s report A certified copy of our invoice is available upon request If the shipment was prepaid call us for a receipted transportation bill Mi Advise Nelmor regarding your wish for assistance and to obtain an RMA return material authorization numbe 708 712 716 Page 11 CG2 61 6 Page 12 708 712 716 Granulators 2 3 If the Shipment is Not Complete Check the packing list You should have Mi Nelmor Seven Series granulator Mi Bill of lading for equipment shipped Mi Operating and Installation packet Mi Electrical schematic and panel layout drawings Re inspect th
16. ce Notes 708 712 716 Page 46 CG2 61 6 Page 47 708 712 716 Granulators
17. e container and packing material to see if you missed any smaller items during unpacking Determine that the item was not inadvertently taken from the area before you checked in the shipment Notify Nelmor immediately of the shortage 2 4 If the Shipment is Not Correct If the shipment is not what you ordered contact the parts and service department immediately at 847 273 7700 Have the order number and item number available Hold the items until you receive shipping instructions 2 5 Returns Important Do not return any damaged or incorrect items until you receive shipping instructions from Nelmor 708 712 716 Page 13 CG2 61 6 2 6 Uncrating Seven Series Granulator Seven Series granulators are shipped mounted on a wooden skid then blocked and banded to prevent movement All non painted items subject to corrosion are coated with a quality rust preventative and the machine is then covered with heavy duty polyethylene to protect it from moisture and dirt Nelmor granulators are normally shipped completely assembled unless the size of the machine or an agreement for special shipping arrangements causes partial disassembly If inspection revealed no shipping damage unpack the unit by removing the polyethylene covering and banding For detailed uncrating information follow the instructions listed below 1 Remove the nails holding the box to the skid and lift the box off carefully avoiding staples in the 1 x
18. ed Make certain all electrical connections are properly made and supported between accessories and the control enclosure Refer to the wiring diagrams for wire and terminal connections Open the sheave guard LH by removing the fastener attaching the cover Check the belts for proper tension and alignment refer to Section 9 2 Upon completion close the sheave guard by placing the cover back into position insert all of the fasteners originally removed and tighten them fully 3 4 Electrical Service Connections Carefully check the diagrams packed with the machine All internal wiring has been done at the factory and safety interlocks have been verified for proper functioning before shipment It is only necessary to connect the electrical power source to the machine at the control enclosure WARNING All equipment must be grounded in compliance with Article 250 of the National Electric Code The customer s disconnecting means and branch circuit protection must also be in compliance with the National Electric Code and all Local Codes Page 18 708 712 716 Granulators 3 5 High Amperage Readings NOTE Make sure the granulator is not drawing excessive amperage 1 Check appropriate amperage as listed on the motor nameplate 2 Measure amperage with ammeter by connecting ammeter to incoming power feed wires Make sure machine is not drawing more than amperage listed on the nameplate The amperage will change accordin
19. educe your scrap They have been engineered to consistently deliver clean granulate with a minimum of fines The rotor on which the cutting knives are mounted is a fabricated steel unit supported by bearings mounted outside the cutting chamber A motor drives the rotor which is capable of producing high torque loads The granulator is equipped with a magnetic starter that is protected by manually resettable overload heaters The slanted rotor knives produce a scissors cutting action which reduce the possibility of feedstock jamming in the cutting chamber Motors are individually fused for maximum protection in compliance with the National Electric Code The control enclosure houses all of the necessary wiring fuses overload heaters motor starter coils along with the 1 15V control transformer and granulator operating controls The control enclosure is built to meet NEC JIC M T and ANSI B regulations 708 712 716 Page 9 CG2 61 6 1 3 Granulator Specifications Standard with rotating end discs 3 rotating 2 stationary Standard Cutting circle diameter in inches Open screen area in square inches 39 sq in Average thruput in lbs hr 100 Ibs hr 150 lbs hr 200 Ibs hr Main dimensions in inches 2130 Average machine weight in Ibs 510lbs 530 Ibs 550 Ibs Page 10 708 712 716 Granulators 2 Shipping Information 2 1 Unpacking and Inspection You should inspect your Nelmor Seven Series granul
20. ft required Transition or cyclonic air separator tubing is Clean as required clogged Granulate builds up in the transition or tubing Check for loose fan wheel Fan is not evacuating on shaft worn fan wheel properly or loose drive belts Material being placed into he machine for processing is too large for he hopper cutting Reduce the initial size of chamber or rotor the feedstock diameter Knives are dull Sharpen or replace knives and re install Regulate the infeed of scrap to uniformly feed the machine over an extended time period Feedstock may be hung Shut the machine down up inside hopper and check Screens are plugged Clean the screens Fan is too small Replace with larger unit or fan wheel No granulate Fan line may be clogged Clean as required Fan wheel is damaged or Replace or repair as orn required Fan uhingis fol Connect as required connected properly q Stringy granulate Knife gap is too large Adjust knives to proper gap specifications Feedstock hangs up in the hopper or cutting chamber Overloading of the machine Page 42 708 712 716 Granulators Knives are dull Sharpen or replace knives and reinstall Reduce the amount of Overloading of feedstock feedstock put into the machine per unit of time Possible Cause Solution Knives are dull Sharpen knives refer to Section 9 and re install Plastic is clogging the screens or transition preventing
21. g to motor size 3 If amperage exceeds the amount listed on nameplate check the following Sharpness of knives Quoted feed rate of granulator or a a r r l May not meet NEMA torque on 208V systems BEARINGS DRIVE OPP NEMA NEMA NOM DESIGNB EFF SERIAL CONT HIGH VOLTAGE LINE AC Motor eee i lieli VADE NUSA 708 712 716 Page 19 CG2 61 6 4 Accessing Cutting Chamber 4 1 Opening Cutting Chamber 1 Allow material to run out of the cutting chamber 2 Shut OFF and LOCKOUT all power including the main disconnect switch 3 If equipped with optional sound enclosure open front doors 4 Loosen fasteners on front of machine They are designed to remain with the upper screen chamber 5 from the back side of the hopper robot chute pull the hopper towards you and open the unit until it comes to a stop WARNING DO NOT USE ANY OTHER MEANS TO CRANK OPEN THE MACHINE OTHER HAN THE HAND CRANK PROVIDED Using other methods of turning the jack will result in damage to the unit NOTE The cutting chamber is designed to open 90 to access the knives but can be left open at any position on the way up depending on the reason for opening The jack screw is a self locking acme screw that will not back travel CAUTION New or re sharpened knives should be handled with extreme care It is suggested that the sharp cutting edges be covered with tape to prevent damage to the knives or injury to personnel during i
22. n verified for proper rotation direction Are all electrical enclosure boxes tightly closed and clamped shut Are all personnel clear of the machine and optional fan NH A A A AW Page 26 708 712 716 Granulators 8 Operation 8 1 Operation Instructions 1 Prior to machine startup All doors covers guards and limit switches must be in place securely fastened and functional All accessory components must be properly connected If the granulator has a bin make sure it is installed 2 Turn the main disconnect to the ON position 3 Start the granulator and fan optional by pressing the appropriate pushbutton at the operator station 4 Load feedstock at a uniform rate that does not exceed the capacity of the machine NOTE For color and or material changes allow all existing material to clear the granulator and its downstream equipment before stopping the machine in order to minimize cleaning requirements Refer to Sections 4 and 5 for how to open the cutting chamber and screen chamber in order to obtain access to other machine areas for cleanout NOTE If there is an access door on the hopper for inspection or cleanout purposes that is limit switch interlocked make certain that the limit switch actuator bracket is re installed and is properly in contact with the limit switch or the machine will not start 8 2 Temporary Machine Stops When temporarily stopping the machine allow all material to run out of the c
23. nstallation 4 2 Closing Cutting Chamber 1 Double check the cutting chamber area for tools rags and other debris left in the area 2 Close the cutting chamber 3 Raise screen cradle and tighten the fastener 4 Tighten the fastener in the front of the cutting chamber Page 20 708 712 716 Granulators 5 Accessing Screen Chamber 5 1 Opening Screen Chamber 1 Allow all material to run out of the cutting chamber and screen chamber 2 Shut OFF and LOCKOUT all power including the main disconnect switch 3 Remove hopper located below the screen chamber 4 Loosen the fastener holding the screen cradle in position As the fasteners are designed to remain with the screen chamber it is not necessary to totally remove them from the screen chamber 5 Guide the screen chamber to its resting position Screen chamber in resting position Screen WARNING DO NOT LET THE SCREEN CHAMBER DROP Guide cradle to it s resting position 6 Remove the screen s and place them upright on their side 708 712 716 Page 21 CG2 61 6 CAUTION he knives mounted on the rotor and the bed knives located at the edges of the cutting chamber are extremely sharp Always wear heavy gloves and exercise care when working in the cutting chamber 5 2 Closing Screen Chamber 1 Ensure all tools screws and debris is removed from the inside of the screen chamber 2 Place the screen back into its original positi
24. nt of the machine apply lifting pressure to open the cutting chamber approximately 90 For more information on opening the cutting chamber refer to Section 4 CAUTION The knives mounted on the rotor and also located at the edges of the cutting chamber are extremely sharp Always wear heavy gloves and exercise care when working in the cutting chamber Wipe out the inside of the hopper and upper cutting chamber Carefully inspect the interior of the cutting chamber for foreign material or debris Slowly turn the rotor by hand to verify that it rotates freely and without obstruction or contact between the rotor and bed knives Before closing the cutting chamber check the chamber to insure that nothing has been left inside the 708 712 716 Page 17 CG2 61 6 machine Rotate the hand crank counter clockwise towards the rear of the machine until the cutting chamber is fully closed Lower the screen chamber until it comes to rest Remove the screens and place them on their side Wipe out the screen chamber and transition Once cleaned place the screen back into position Raise the screen chamber and tighten the 2 fasteners to hold the screen chamber and cutting chamber securely closed Connect the fan transition optional or replace the bin to prepare the machine for operation Position and connect any optional accessory equipment such as fans conveyors and separators Ensure all tubing joints are securely clamped and support
25. o the machine per unit of time Kaivesaredil Sharpen or replace knives and reinstall Excessive power required blown fuses Clearance between the rotor knives and screen is too small Lack of lubrication Overloading of the machine Bearings sound noisy or are excessively hot their rated life Bearings have exceeded Knife gap is too large Adjust knives to proper gap specification Check that the screen is properly seated in the screen chamber Lubricate per maintenance instructions refer to Section 9 1 Reduce the amount of feedstock put into the machine per unit of time Consult the Nelmor Service Department for replacement instructions Tighten per maintenance Overloading of the machine Belts slip or squeal Machine has thrown belts Reduce the amount of feedstock put into the machine per unit of time Pulleys are not properly Loosen and align as aligned required Inspect and if acceptable for use reinstall and tighten per maintenance instructions Enica saal Replace with larger unit or fan wheel Transition or tubing is clogged due to Granulate builds up in the overloading of machine transition or tubing 708 712 716 Reduce the amount of feedstock put into the machine per unit of time Return air vents are Ensure the vents are covered or too small open Page 41 CG2 61 6 Possible Cause Solution Fan wheel is loose on Tighten set screws as sha
26. on ensuring it is fully seated within the cradle then CAREFULLY raise the chamber to its closed position Tighten the captive screws 3 Insert hopper into the two clips located on either side of the unit walls see photo 4 Before leaving the area make sure all components are connected properly 5 Replace access cover and close doors on optional enclosures Discharge should be inserted into these clips located on either side of the unit Page 22 708 712 716 Granulators 6 Sequence of Operation 6 1 Scope This section contains the information required to carry out pre operational procedures and the checklist of items which should always be reviewed prior to a production run DANGER Before undertaking any machine repairs or maintenance always make certain that the machine disconnect switch is turned to the OFF position or that the control enclosure is disconnected from the main power source Lock out all sources of power including the main disconnect switch and follow all of your plant lockout procedures 6 2 Electrical Test Before applying power to the machine check the incoming voltage from L1 to L2 L2 to L3 and L1 to L3 see the wiring diagram packed with the machine The voltage should be the same as indicated on the silver tag in the control enclosure If the voltage is not the same contact the Nelmor Service Department for voltage modification instructions at 1 800 229 2919 Once it ha
27. r 3 See sketch in Section 10 for the general cutting chamber drawings 4 Loosen the fasteners holding the bed knives shims and clamps working from the knife edges inward to the center NOTE the relative position of each part before they are removed 5 As the last screw is backed out the knife clamp knife and shim will require some support to prevent them from moving 6 Clean the bed knife seats thoroughly with a scraper and or emery paper to remove any foreign material and rust 7 Inspect the components and replace or resharpen as 8 required DANGER Before undertaking any machine repairs or maintenance always make certain that the machine disconnect switch is turned to the OFF position or that the control enclosure is disconnected from the main power source When extensive work is anticipated either place a sign indicating that the main disconnect switch is to remain off on the switch or lock the switch to prevent accidental activation by someone unaware of work in progress 708 712 716 Page 31 CG2 61 6 9 4 Rotor Knife Removal 1 Carefully lock the rotor with locking pins to prevent it from turning 2 Loosen the hex head rotor knife bolts and carefully remove all rotor knives 3 Clean the rotor knife seats thoroughly with a scraper and or emery paper to remove any foreign material or rust 4 Inspect the knives and replace or resharpen as required 9 5 Rotor Knife Sharpening The rotor knive
28. s been determined the voltages are proper it is necessary to start the motors and check for the proper direction of rotation e Turn the main disconnect switch to the ON position e Press the granulator start pushbutton to power the granulator motor Visually compare the direction of the motor shaft rotation to the rotation arrow label clockwise when viewed from the shaft end If the motor turns in the opposite direction reverse any two incoming power leads Once the rotation direction is correct the remaining electrical controls need to be tested as follows e Press the granulator stop pushbutton and allow the machine to stop 708 712 716 Page 23 CG2 61 6 e For granulators equipped with conveyors fans etc test their operation also by pressing the appropriate pushbutton Check fan outlets for proper airflow e For granulators with emergency stop pushbuttons test the buttons to insure all motion stops e Loosen the ORANGE fastener on the front of the cutting chamber and screen chamber to verify the safety interlock switch shuts the machine off Notes Page 24 708 712 716 Granulators 7 Startup Checklist 7 1 Introduction After all electrical and mechanical machine elements have been inspected and any defects corrected the machine can be put into production once the start up checklist has been referred to 7 2 Fan Evacuation Nelmor granulators can be supplied with an optional fan system to provide
29. s must be sharpened to within 003 0 076 mm of each other Greater dimensional variations prevent the proper setting of the knife gap and may create other serious complications Grinding the cutting edge until it is free of nicks can be wasteful It is not harmful to allow small nicks to remain in the cutting edge WARNING Do not install rotor knives that are smaller than the minimum dimension shown because the fasteners that secure these knives may interfere with the cutting circle The rotor will not be able to rotate and the knives will be damaged It is important to note that the minimum dimensions given for the rotor knife and bed knife cannot be combined simultaneously to produce a cutting combination NOTE Replacement knife sets and knife resharpening services are available from Nelmor Contact the Customer Service Department at 800 229 2919 Page 32 708 712 716 Granulators Figure 3 Rotor Knife Sharpening KEEN EDGE ROTOR KNIFE OPERATING RANGE NEW KNIFE DIM A MIN KNIFE DIMA 1 KEEN EDGE ROTOR KNIFE AY NEW AMIN 2078 1 827 g g g g N 4 e e bad BED KNIFE MIN BED KNIFE NEW BED KNIFE S MIN CMAX CMIN DIM B MIN DIM B 0 234 1 850 1 610 9 6 Recommended Knife Design Per Material Table 4 Recommended Knife Replacement Blades Physical Material Material Quality ABS Lo Energy Impi POLYETHYLENE PE Energy Absb Low POLYETHYLENE PE Energy
30. the clearance once the bolts have been fully torqued and reset if necessary 6 Turn the rotor so that the knives are aligned with a secondary bed knife on the rear of the granulator and continue with the same procedure used to setup the primary bed knife 7 After the clearance setting of both the primary and secondary bed knives is complete and checked turn the 708 712 716 Page 37 CG2 61 6 rotor by hand to ensure that none of the rotor knives hit the bed knives 8 Double check inside the machine to make sure no tools or other articles are left in the cutting chamber or have fallen into the screen area 9 Close the cutting chamber and tighten the fasteners refer to Section 4 2 9 10 Preventative Maintenance Service Follow a systematic preventative maintenance program to help avoid costly down time Call the Nelmor Service Department to arrange a schedule of inspections This service can be tailored to fit your maintenance requirements Page 38 708 712 716 Granulators 9 11 Recommended Torque For Knife Bolts NOTE For Rotor knife applications use SEC Grade 8 hex head cap SCrews For Bed knife applications use Series 1960 Grade 8 socket head cap screws Table 6 Recommended Bolt Torques Metric FT LBS TORQUE METRIC SCREW SIZE os __ M24 610 The above listed torque values are standard specifications Metric Knife Bolt Screw Tightening Torque for Grade 10 9 Fine Thread 708 712 716 Page 39 C
31. uld never be tampered with or removed for ANY reason They should be frequently checked by a qualified mechanic for proper operation M NEVER modify the machine configuration or any individual component without written consent from Nelmor 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 Nelmor has long recognized the importance of safety and has designed and manufactured it s equipment with operator safety as a prime consideration As a user we expect you will abide by the foregoing recommendations in order to make operator safety a reality SAFETY IS NO ACCIDENT 708 712 716 Page 5 CG2 61 6 1 Table of Contents 1 General Information 1 1 Introduction 1 2 General Description 1 3 Granulator Specifications 2 Shipping Information 2 1 Unpacking and Inspection 2 2 In the Event of Shipping Damages 2 3 If the Shipment is Not Complete 2 4 If the Shipment is Not Correct 2 5 Returns 2 6 Uncrating 3 Installation 3 1 Scope 3 2 General 3 3 Set up 3 4 Electrical Service Connections 3 5 High Amperage Readings 4 Accessing Cutting Chamber 4 1 Opening Cutting Chamber 4 2 Closing Cutting Chamber 5 Accessing Screen Chamber 5 1 Opening Screen Chamber 5 2 Closing Screen Chamber 6 Sequence of Operation 6 1 Scope 6
32. utting chamber NEVER try to restart the machine with material remaining inside the cutting chamber 8 3 Final Machine Stops When shutting the machine down allow all material to drop into the bin or pass through the fan and into the cyclonic air separator optional before pressing the granulator stop pushbutton 708 712 716 Page 27 CG2 61 6 8 4 Emergency Stops Feedstock must be cleaned out of the hopper and cutting chamber prior to restarting the machine NOTE The Nelmor Seven Series granulators are not designed for small purging chunks of solid plastic or other heavy wall cross sectional pieces Page 28 708 712 716 Granulators 9 Routine Maintenance 9 1 Lubrication Specifications 9 1 1 Description All Nelmor Seven Series machines are equipped with rotor bearings that are prelubricated from the factory Mounting of the bearings on the Nelmor Seven Series machines results in trouble free low maintenance and long lived bearing design The bearings used require a high quality lithium based extreme pressure or EP type of bearing which conforms to NGLI Grade 2 consistency This grease has been chosen due to its suitability for use in heavy duty applications under heavy shock loads It also contains rust inhibitors has high temperature stability and exhibits good water resistance Recommended Grease Product Names Amoco Castrol Exxon Gulf Mobil Shell Sunoco Texaco Amolith EP2 EP2 Ronex MP
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