Troubleshooting
[B867400_1] - EN / 20.07.11
Page 14 of 16
Subject to change without notice.
Problem
Possible causes
Remedy
Coupled blind reacts with a delay
or not at all
Coupling of tilt rod is missing
Slide the coupling piece into the tilt
rod coupling of the drive blind and
tighten the locking screws (qualified
specialists only).
Loose locking screws
Tighten the fixing screw (specialists
only)
Crank rod is difficult or impossible
to turn
Mechanism is blocked or defective
Replace the gear drive (specialists
only)
Crank or pivot bearing is defective
Replace the pivot bearing (specialists
only)
Square input shaft is not aligned
Rework the drilled hole (specialists
only)
Square input shaft to the drive is too
short
Replace the pivot bearing (specialists
only)
Tab. 3:
Overview of possible problems
