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7. Servicing
All servicing work should be carried out by a qualified service engineer and in
the order described, to prevent personal injury or damage to machinery.
7.1 Changing the knives
When changing the knives, also check for any wear to the screen. For safety
reasons, this should be replaced when the holes in the screen become drop-
shaped.
Always take great care when handling the knives since they are
very sharp and can cause personal injury. Use protective gloves!
7.1.1 Changing the fixed and rotating knives
For safety reasons, damaged screws must be replaced.
• Open the screenbox as described in chapter 5.2.
Disassembling the rotating knives (C):
1. Remove the fastening screws (A) and washers (H).
Disassembling the fixed knives:
1. Loosen screws (E), 5 on each long side and 2
on the short side opposite the belt guard, total
12 pieces.
2. Remove the screws (D), 2 on each fixed knife.
3. Loosen the stop screws (F), 2 on each fixed
knife.
4. Screw the special extractor (G) (in the tool kit)
into the threaded hole on the knife end and pull
out the knife.
Assembling the lower fixed knife:
1. Check that the knives and the grooves for the knives are free from plastic
waste, grease, etc.
2. Place the lower fixed knife in position.
3. Adjust the lower fixed knife to its
forward position using the adjusting
screws (F). NOTE: These screws should
only support the rear edge of the knife
and should not be tightened so much that
the knife bends.
4. Tighten the 5 screws (E) (in the diagram
above) along the lower long side with a
torque of 20 Nm.
5. Screw in and tighten the screws (D).