Portafill 4000T, User Manual

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70
4000T
5.21 Mesh Removal / Replacement
Screen meshes for a trommel screen are very
heavy and awkward to handle. Always use
suitable mechanical lifting equipment with a
valid test certificate.
Always adhere to Health & Safety regulations
when lifting manually or mechanically.
1. Place the 4000T on level ground with the
front jacklegs down.
2. Unfold the oversize and wing conveyors.
3. Retract the feeder conveyor by pressing the
lever.
4. Open the large side door.
5. The drum can be lifted out from the 4000T
using a suitable mechanical lifting device.
Take care not to damage the cleaning brushes
when removing the drum.
6. A replacement drum can be placed back into
the 4000T. Ensure that the drum is placed in
the machine so that the drum channel rests
on the trommel guide wheels and that the
drive sprocket is located in the drum
sprocket.
5.22 Drum Drive Gear Alignment
Instructions
The drum drive gear must be regularly
checked for alignment every 50hours to
ensure drive gear is parallel and centred to
the drum flange to prevent excessive wear on
drive.
The drive gear bracket can be easily adjusted
to allow optimum clearance in all directions.
The adjusting bolt of the drive bracket is held
by a combination of nuts and disc spring
washers, the disc spring washers allow a small
degree of flexibility in the drive assembly. The
drive Gear must be centred using the
alignment nuts as shown below.
The drive gear must have 1-2 mm of clearance
(backlash) to the drum pins.