Rev. 01 11/22
ZA08 Maintenance / Repairs
XX
IMPORTANT:
These screws may
not be loosen for
any reason (factory
setting)!
: Top plate
6. Let the Z carriage slowly run up and down the column a few times, to
see if the drive belt does not ride up on the toothed wheel
Toothed wheel
Replacing the upper toothed drive wheel
The following work must only be carried out by trained
personnel!
Procedure:
1. Switch off the power supply.
2. Release the motor brake manually, let the Z carriage move down
onto the lower stop
Caution - Damage to components!
► Do not let the carriage fall without support.
3. Remove the front panels
4. Remove the locking plates (A) and loosen the tensioning screws (B),
so that the toothed belt is slack
5. Completely remove the front tensioning screw
Danger of accident!
► The Z carriage must definitely rest on the rubber buffer, before
this tensioning screw is removed!
6. Hold the toothed drive wheel tight in one hand whilst the eye bolt is
being removed from the spindle
7. Remove the toothed belt from the toothed wheel
8. Remove the toothed wheel and replace it
The installation takes place exactly in the reverse order!
– If necessary, remove the service cover on the base, to check if the
toothed belt is sitting correctly on the toothed drive wheel
– Let the Z carriage slowly run up and down the column a few times, to
see if the drive belt must be tensioned more (see chapter
"Tensioning the drive belt")
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