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J4 WT Protect Drive
Full installation guide
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Non contractual images.
6.4. FAQ
→ WHY HAS THE UPPER END LIMIT OF MY EVB CHANGED
SLIGHTLY?
When the EVB rises, the cords can wind up more efficiently as the blind
is used over time, which results in the upper end limit position changing.
To overcome this, activate the automatic adjustment function.
However, if the change is due to incorrect stacking of the ladders, this
function will not compensate for it.
→ HOW CAN I CHECK THAT MY TYPE 1 EVB IS ROTATING IN THE
CORRECT DIRECTION?
Press the Up button.
-
If the slats stay flat or tilted inwards when the blind rises, the direction
of rotation is correct.
-
If the slats are tilted outwards when the blind rises, the direction of
rotation is incorrect.
Observations
Possible causes
Solutions
The type 1 EVB
lowers with
the slats tilted
outwards.
The EVB has a working
position.
The orientation of
the slats on lowering
cannot be changed
in this case.
The EVB is blocked
in its upper end
limit position.
The drive was reset when
the EVB was very close to
the mushroom.
Mechanically
disconnect the drive,
unwind the apron to
the lower end limit,
then reassemble
the drive.
One of the EVBs
controlled by a
building controller
is no longer
synchronised.
The EVB met an obstacle
when rising and reversed to
relieve the stress.
Lower the EVB to
the lower end limit
to resynchronise
the drive with
the controller.
