Sacmi CCM001, User Manual

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002AZ001A
8 - 11
MAINTENANCE
8
8.1.2.2 50 kg/h Extruder
8.1.2.2.1 Overhauling the extruder auger
- Remove the plastic compound from the auger chamber with the extruder at its operating temperature. To do this,
carry out a by-pass operation until the plastic compound no longer flows out of the nozzle.
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ATTENTION!
Stop feeding plastic compound to the extruder when cleaning.
- Shut off the machine with the main switch located on the electrical cabinet.
- Install the guide extensions provided.
- Loosen the screws (5).
- Disconnect the cables from the electrical boxes with the quick-connect couplers.
- Move the extruder to the end of the guides with the connecting tube attached. Clean up the plastic compound that
flows out of the tube and nozzle as soon as possible.
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ATTENTION!
Move the electrical cables away from under the extruder to avoid cutting them.
- Loosen the nuts (3) and remove the connecting tube. Clean up the plastic compound that flows out of the tube and
nozzle as soon as possible.
- Remove the filter (1).
- Take off the cover (6) found on the back of the extruder near the screw axis.
- Put in the fixture (7). While turning it, push the screw (8) forwards until it protrudes approximately 10 cm out of the
opposite side.
- Remove by hand being extremely careful when working near the auger as it is still very hot.
- Take out the fixture used to remove the extruder auger.
- Clean the auger, filter and extruder chamber as directed below.
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ATTENTION!
This operation is to be performed with the plastic compound at room temperature.
- Thoroughly clean the auger with hand tools, removing the resin sheath. If the surface is opaque and has turned dark,
polish it with brushes and abrasive pastes.
- Clean the inside of the cylinder with a brush, removing any material stuck to the cylinder.
- Thoroughly clean the filter (1). Replace it if worn. To open the filter holes, use a drill bit with 2.3 mm Ø (max.).
- Install the auger.
- Install the filter (1).
- Put in the connecting tube, tightening the nuts (3).
- Move the extruder near the nozzle body and tighten the screws (5).
- Hook up the electrical boxes.
- Put on the cover (6).
- Turn on the machine with the main switch.