Filter
Top Products
Page 38 of 53
8. Install new or sharpened bed knives on each knife seat, making
sure that the rotor is blocked to prevent it from rotating while
installing each knife. Be sure to place the bed knives in the
correct positionsthe rear (down stroke) bed knife must be
placed with the extended cutting edge on top, and the front
(upstroke) bed knife should be placed with the cutting edge on
the bottom.
9. Replace the upper shields in position above the bed knives. The
shield on the rear (down stroke) bed knife should be positioned
so that the inside edge is set back approximately 1/32” from the
cutting edge below it.
10. Before re-installing the knife bolts, wipe them clean with a
lightly oil-damped cloth. Do not leave an oil film on the bolt
since lubrication can adversely affect the stress on the bolt
when torqued to the specified values. It is recommended that
the knife bolts be replaced with each new set of knives. This
will reduce the risk of bolt failure due to overstretching.
Always use the specified replacement bolts.
11. Tighten the bed knife bolts at each end of the knife just enough
to keep the knife in place, while still allowing the adjusting
screws to move the knife forward. The remaining bolts can be
left hand tight until the knife is adjusted.
12. Adjust the knife gaps with the rotor knives and close the
machine, following Steps 8-14 in Section 6-4.
6-6 Removal and Replacement of Rotating Blades
NOTE: A qualified operator / maintenance mechanic should
perform this operation. Protective gloves must be worn to
avoid injury when handling the cutting knives.
To remove and replace rotor knives, complete the following
procedure:
1. Open the granulator by following Steps 1-5 in Section 6-3.
2. Open the rear-closing panel by releasing the locking latch.
3. Pivot the in-feed hopper completely back to gain clear access
to the cutting chamber, and clear any process material or
foreign objects from between the knives.
4. Rotate the rotor so that the knife bolts are in a convenient
position to remove the bolts with the appropriate wrench.
Using a wooden block, block the rotor to prevent it from
rotating while removing knives or after a knife has been
removed.