Sterlco BP800 Series Granulators - Manual (Page 30)

800 Series beside-the-press Chapter 5: Maintenance 30 of 43
10. Tighten the bolts that hold just the bed knife enough to keep the knife in
place at the same time allowing the adjusting screws to move the knife
forward.
11. Adjust the knife gaps with the rotor knives following steps 8-12 in
“Inspection and Adjustment of Knives.”
12. Replace the shields in position above the bed knives. The shield on the
front (downstroke) bed knife should be positioned so that the inside edge
is set back approximately 1/32" from the cutting edge below it. Replace
the remaining bolts and torque.
13. Close the machine while following steps 12-14 in “Inspection and
Adjustment of Knives.”
Removal and Replacement of Rotating Blades
Only a qualified operator or maintenance engineer should perform this
operation. Protective gloves MUST be worn to avoid injury when handling
the cutting knives.
To remove and replace rotor knives, complete the following procedure:
1. Open the granulator following the steps in “Removal and Replacement of
the Screen.”
2. Open the rear-closing panel by releasing the locking latch.
3. Pivot the in-feed hopper completely back to gain clear access to the
cutting chamber; clear any process material or foreign objects from
between the knives.
4. Rotate the rotor so that the knife bolts are in a convenient position to
remove the bolts with the appropriate wrench. Using a wooden block,
block the rotor to prevent it from rotating while removing the knives or
after a knife as been removed.
5. Loosen and remove the knife bolts and lift the knife off the knife seat.
Remove the knife from the cutting chamber.
6. Perform the above steps until all the rotor knives are removed.
Before replacing the rotor with new or sharpened knives, wipe the knife
seats on the rotor, making sure to clean off all process material. The
tapped holes in the rotor (used for holding the knives in place) should be
clear of any dirt, oil, or process material.
7. Loosen the bed knife bolts and adjusting screws, and pull back the bed
knife so the rotor knives will not collide as they are installed and rotated.
8. Install knew or sharpened knives on each knife seat, making sure that the
rotor is still blocked to prevent it from rotating.