Rev. 01 11/22
ZA08 Maintenance / Repairs
41
Replacing the drive unit
Risk of burns
There is the risk of burns if contact is made with electrical
components that have become overheated!
► All work must be carried out only by trained personnel and when
no power is applied!
If it is necessary to replace a drive unit gearbox, the complete motor unit
must be dismantled from the reciprocator base. Therefore, the
reciprocator has to be free of load and disconnected from mains.
Danger of injury
► For safety reasons, two people should always carry out the
following maintenance work!
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 the components!
► Do not let the carriage fall without support.
3. Remove all cover plates from the reciprocator
4. Remove lateral covers
5. Remove the locking plates (A) and loosen the tensioning screws (B),
so that the toothed belt is slack
XX
IMPORTANT:
These screws may
not be loosen for
any reason (factory
setting)!
: Top plate
6. Loosen the lower clamp plate of the toothed belt on the Z carriage
and set it down.
– Note the position of the clamp plate on the drive belt holder,
because it must be fitted in approximately the same position
during assembly.
7. Loosen the grub screw on the clamp ring in front of the flange
bearing
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