AEC Colortronic MTF 3000 Series Granulator - Manual (Page 19)

8.0 Knife Recommendations and Adjustments
NOTE: The rotor and bed knives are subjected to severe work and it is recommended that
they be inspected periodically for sharpness. The sharper the knives are kept, the better the
machine will operate and the better the quality of the granulate it will produce. Waiting until
the knives have been chipped or otherwise damaged will result in heavy stock removal during
operation causing a subsequent reduction in knife life.
8.1 Knife Removal and Adjustment Procedure
1. Shut OFF and lockout all power including the main disconnect switch.
Η Η Η Η Η Η Η
DANGER
Η Η Η Η Η Η Η
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
is anticipated, either place a sign indicating that the main
disconnect switch is to remain off onto the switch, or lock
the switch to prevent accidental activation by someone
unaware of work in progress.
2. Follow instructions in Section 10 on opening the machine and screen chamber.
NOTE: The shim knife, which is only under the primary bed knife, serves to protect the
primary knife from excessive abuse during granulation.
3. Remove the screen and stand it on end to avoid damage.
4. Loosen the socket cap screws holding the bed knives, clamps and shims, 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 support to
prevent them from falling.
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 required.
8.2 Rotor Knife Removal
1. Carefully block the rotor with a piece of wood to prevent it from turning.
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