AEC Colortronic Granulator - M103 - Manual (Page 20)

Rotor Knives
We recommend that the rotor knife screws be replaced with new screws every time the knife
is changed to reduce the risk of screw failure due to abrasion. Screws must be replaced with
the type specified in the spare parts list.
Using the optional blade adjustment gauge, a second set of blades can be pre-adjusted outside
of the granulator for quick replacement. The blade adjustment gauge is available for the 6-
blade rotor models.
To replace or adjust the rotor knives using the optional gauge (6-blade rotors only):
1. Access the cutting chamber as directed in Section 3-3 on page 13.
2. Insert the rotor blades individually into the blade adjustment gauge.
3. Screw in the adjustment bolts by hand until the blade does not move.
4. When all the rotor blades have been pre-adjusted, insert them into the guides on the
rotor, pushing them up to the stopper and tightening them down (36 Nm).
5. Make sure that the longer end of the rotor blades makes contact with the rotor. The
cutting edges of slanted rotor blades must be inclined towards the center of the rotor.
6. Use the bed knife adjustment screws to set the knife gap to 0.004”-0.016” (0.1 mm-
0.4 mm).
7. Tighten the screws evenly (36 Nm)..
8. Rotate the rotor for one complete turn in order to make sure that the rotor blades spin
freely. The shaft is rotated by means of an Allen key inserted in the central bolt of the
rotor.
To replace or adjust the rotor knives without a gauge:
1. Access the cutting chamber as directed in Section 3-3 on page 13.
2. Set back the bed knives and carefully remove the rotor knives.
3. Position a bed knife parallel to the casing wall and tighten the bolts by hand.
4. Make sure that the cutting edge of the left bed knife blade is facing upwards and the
cutting edge of the right bed knife blade is facing downwards.
5. Push the first rotor blade right up to the stopper on the rotor and adjust the knife gap
to 0.004”-0.016” (0.1 mm-0.4 mm).
6. Tighten the screws evenly (36 Nm).
7. Install the second bed knife and tighten the bolts by hand.
8. Install the rest of the rotor knives, checking the knife gap between each rotor knife
and both bed knives, tightening all screws to 36 Nm.
9. Rotate the rotor for one complete turn in order to make sure that the rotor blades spin
freely. The shaft is rotated by means of an Allen key inserted in the central bolt of the
rotor.
4 Inch Granulator Chapter 5: Maintenance 20 of 47