22 Manual for installation and operation, Comfort 870 GB (#81125)
• Push the toothed rack segments (F) up to the first
clamping assembly.
• Shorten the length of toothed rack segments (F) by
just enough to allow the second clamping assembly
to be pushed into the rack housing (G).
6.2.8 Fixing the toothed rack segments
(only applies to Special 432 and 441)
6.2.8 / 1
F
G
6.2.8 / 2
• Slide the clamping assembly into the rack housing
and push it tightly against the toothed rack
segments.
• Mark the drill hole locations.
• Remove the clamping assembly from the rack housing.
• Drill two holes for the clamp assembly screws at the
hole location marks.
• Slide the clamping assembly back into place and fix
with the screws.
6.2.9 Adjust the motor unit
Attention!
To ensure that the gate runs smoothly,
it is important that a vertical gap of
1 to 2 mm is maintained between the
toothed rack and the spur gear.
6.2.9 / 1
1 – 2
The height of the spur gear must therefore be
readjusted.
• Lower the spur gear by 1 to 2 mm.
Reference:
Section 6.3 describes how to adjust the
height of the motor unit.
Check:
To check that the spur gear engages
the toothed rack along its entire length,
the gate must be pushed once to the
OPEN position and back to the CLOSED
position.
6. Installation
