Sterling BP810, BP814, BP818 manual 6-6Removal and Replacement of Rotating Blades, Page 38 of

13. Close the machine, following Steps 12-14in 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 1-0in 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.

5.Loosen and remove the knife bolts and lift the knife off 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 seats on the rotor, being 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 that the rotor knives will collide as they are installed and rotated.

8.Install new or sharpened knives on each knife seat, making sure that the rotor is still blocked to prevent it from rotating while installing each knife.

9.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.

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