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7    

Troubleshooting 

The following tables list problems that could occur when using the 
granulator. This general information may help to locate the cause 
of the problem and allow it to be resolved promptly. When a 
problem arises, it is advisable to perform the simplest checks 
before proceeding to more complicated ones, which may 
subsequently prove unnecessary. 

7-1 General 

Problems 

Problem 

Possible Causes 

Possible Remedies 

Overheating of bearings 

Dirt or contamination in the bearing 
 
Excessive belt tension 
 
No lubrication 

Correct source of contamination 
 
 
Adjust belt tension 
 
Check bearing seals 

Knives moving in their 
seats 

There may be foreign matter on the 
knives 
 
Knife screws loose 
 
 
Knife screws weakened 

Carefully clean seat 
 
 
Tighten screws with torque wrench 
at values specified 
 
Screws must not be used more than 
6 times 

Broken knife 

Improper resharpening 
 
 
Extremely hard material 
 
Incorrect rotor direction 
 
Foreign body in the cutting chamber 
 
Faulty fitting of screen 

Check knife grinding method used 
 
Contact supplier 
 
Check rotor direction 
 
Look for cause with operator 
 
 
Check assembly procedure 

Excessive knife wear 

Incorrect knife position 
 
 
 
Improper knife re-sharpening 
 
 
Abrasive material 

Correct the gap or distance 
between bed knives and rotor 
knives 
 
Check dimensions with Figure 14 
and Figure 15. 
 
Contact the supplier for special 
knives 

Abnormal screen wear 

Incorrect fitting of screen 
 
 

Check that the screen is correctly 
seated in its rear position and that it 
fits perfectly at the front. 

Page 41 of 54 

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Страница 6: ...eplacement of the Screen 33 6 4 Inspection and Adjustment of Knives 34 6 5 Removing and Replacing Bed Knives 36 6 6 Removal and Replacement of Rotating Blades 38 6 7 Specifications for Resharpening Be...

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Страница 8: ...ives 37 17 Bed Knife Specifications 40 18 Rotor Knife Specifications 40 19 Cutting Chamber Vertical Cross Section 45 20 Cutting Chamber Longitudal Cross Section 46 21 Cutting Chamber Front View 47 22...

Страница 9: ...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 ma...

Страница 10: ...racelets 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 m...

Страница 11: ...lift and move the granulator safely and correctly cover any sharp corners or edges and use the type of equipment that has the most appropriate features and capacity Before lifting check that there are...

Страница 12: ...emoving material from the cutting chamber keeping in mind that the removal of material may cause rotation of the rotor and rotor knives After clearing the jam be certain that the hopper screen and all...

Страница 13: ...could be dangerous as it might be possible to make contact with the granulator knives while they are still rotating Figure 1 Safety Switch 1 3 2 Opening the Granulator The Start Stop lighted pushbutt...

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

Страница 15: ...ection outlines models covered standard features and available options Additional sections within the manual provide instructions for installation pre operational procedures operation preventive maint...

Страница 16: ...l number and model number ready when ordering 2 3 Safety Symbols Used in This Manual The following safety alert symbols are used to alert you to potential personal injury hazards Obey all safety messa...

Страница 17: ...ng chamber 3 Bin for granulated material 4 Belt drive 5 Control panel 6 Electric Motor Figure 3 Main Components of Standard Granulators 6 5 3 2 1 4 2 4 3 Optional Equipment Conveyor Other screen hole...

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Страница 19: ...oods 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 Sub...

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Страница 21: ...is ideal for the purpose but take care to properly position the forks between the casters and the centrally mounted evacuation pipe from the side of the machine See Figure 5 Figure 5 Lifting the Gran...

Страница 22: ...at they are strong enough to support the weight of the granulator then carry out the lifting procedure Important During the movement the load must remain in a horizontal position regardless of the typ...

Страница 23: ...re 6 Inserting the Bin 4 3 Electrical Connection It is extremely important that the machine is correctly wired into the plant power source by a licensed electrician See Section 9 for a wiring diagram...

Страница 24: ...ulator perform the following steps 1 Open the back cover and insert the power cable from underneath the granulator 2 Pass the power cable through the appropriate hole and insert it into the control pa...

Страница 25: ...the cutting chamber 5 Check that there are no foreign objects in the cutting chamber 6 Check to be sure the bed knife and rotor knife bolts are at the proper torque and the knife gap is set according...

Страница 26: ...f the rotation direction is incorrect reverse the rotor direction as follows Warning A LICENSED ELECTRICIAN must carry out this operation 1 Disconnect and lockout the power to the machine at the incom...

Страница 27: ...e screen cradle interlock actuator screw Having completed the above procedures close the control panel Unlock power or return the fuses in the supply panel turning the disconnect switch to ON Pull the...

Страница 28: ...r normal application is 0 006 0 008 0 15 0 20 mm If the gap between the bed knives and the rotor knives is found to be greater than that an adjustment must be made See Section 6 4 Inspection and Adjus...

Страница 29: ...e cleanout maintenance and service persons read the Operation and Installation Manual Have sufficient location clearances been allowed Has the equipment been grounded as required by local codes and or...

Страница 30: ...d before feeding the granulator Warning Never push material into the hopper with hands If the hopper becomes blocked the granulator must be turned off and the power must be locked out or the fuses rem...

Страница 31: ...the granulator to service check the following Any parts that may have been replaced and or tools that have been used are removed from the granulator All safety equipment is in proper working conditio...

Страница 32: ...the rear panel 6 Loosen the nuts that lock the motor base slide 7 Loosen the tie rod 8 Adjust the belt tension turning the tie rods forward 9 Turn the tie rod to bring the motor square to the belt axi...

Страница 33: ...p 6 Then release the belt from tension by fully unscrewing the tie rods Slip off the belts and replace them with new ones Continue with the procedure for adjusting the belt tension 6 3 Removal and Rep...

Страница 34: ...eping it in a horizontal position See 5 Figure 12 6 Replace the screen with a new one tighten the screw knob reposition the bin and close the front panel Unlock the power and turn the machine back on...

Страница 35: ...the rotor and knife cutting edges Check each rotor knife to find the high knife or the knife that measures the smallest gap If the gap is substantially greater than the specified 0 006 0 008 0 15 mm 0...

Страница 36: ...he swing bolt provided 14 Close the front and rear doors and unlock the power or replace the fuses in the control panel Turn the disconnect switch to ON Figure 13 Inspection of Knives Bed knife Adjust...

Страница 37: ...that the rotor is blocked to prevent it from rotating while installing each knife Be sure to place the bed knives in the correct positions the rear up stroke bed knife must be placed with the extended...

Страница 38: ...f the knife seat removing it from the cutting chamber 6 Perform the above steps until all the rotor knives are removed NOTE Before replacing the rotor knife with new or sharpened knives wipe the knife...

Страница 39: ...to 100 Lbs ft 14 Kgm 135 Nm 12 Adjust the knife gap with the bed knives and close the machine following Steps 8 14 in Section 6 4 6 7 Specifications for Re sharpening Bed Knives Every bed knife has t...

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Страница 41: ...the knives Knife screws loose Knife screws weakened Carefully clean seat Tighten screws with torque wrench at values specified Screws must not be used more than 6 times Broken knife Improper resharpen...

Страница 42: ...n Knives worn Distance between the knives too small or too large Screen holes too small Failure of air conveying system or discharge system Reduce amount of material being fed to the machine Remove th...

Страница 43: ...k fuses Check amperage of electric motor Check and replace Empty cutting chamber Motor starts but does not speed up or take a load Excessive drive belt tension Motor connected to power source incorrec...

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Страница 45: ...Figure 16 Cutting Chamber Vertical Cross Section DRAWING CA039060S2 Page 45 of 54...

Страница 46: ...Figure 17 Cutting Chamber Longitudal Cross Section DRAWING CA039060S1 Page 46 of 54...

Страница 47: ...Figure 18 Cutting Chamber Front View DRAWING CA039060S3 Page 47 of 54...

Страница 48: ...Figure 19 Cutting Chamber Rear View DRAWING CA039060S4 Page 48 of 54...

Страница 49: ...9 Typical Wiring Diagram Page 49 of 54...

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