11
Assembly Instruction
KSA - T
WIN
S12 24V DC
I
NSTALLATION
STEP
3:
A
DJUSTING
THE
INITIAL
CHAIN
TENSION
AND
SMOOTH
RUNNING
04
I
NSTALLATION
STEP
3:
A
DJUSTING
THE
INITIAL
CHAIN
TENSION
AND
SMOOTH
RUNNING
Adjust the initial chain tension on site
(bottom-hung casements only)
The smooth running of the drive can be optimised under low
load by screwing in the studs (clockwise).
At the factory setting the studs protrude with 3.5 mm out
of the housing. In this position the chain is fully tensioned.
¢
The initial chain tension (pre-tension) is reduced by
screwing in the stud (max. 5 mm = 7 complete screw
rotations).
Bottom-hung casements only! Do not ch-
ange the factory setting for other types of
casements!
Optimise the smooth running carefully and
check the chain tension. The two studs must
have the same setting. Otherwise, the chain
can buckle (backlash) during operation in the
thrust (push) direction.
Soft run setting after manual unlocking of the
chain
The drive has an electronic position detection. Just before
the CLOSED position the chain retracts with reduced speed
in the soft run mode, to protect the window and the drive.
¢
If the chain is unlocked manually and is completely
pulled out by hand, on starting up ensure that the
chain moves with reduced speed in soft run mode
from approx. 40 mm before the CLOSED position.
¢
If necessary repeat this step several times.
Manual unlocking of chain
If soft run mode is
not
achieved on retracting the chain:
¢
Use the Chain unlocking key
y
to unlock both chains and
completely pull them out manually.
¢
Re-close the drive completely electrically and note
the soft run mode of app. 40 mm before the CLOSED
position.
¢
Insert cover caps
x
.
If the soft run mode begins too early, it is adjusted auto-
matically by the drive‘s electronics the next time the
window is closed.
The manual chain unlocking function may
only be used for
installation
purposes!
3
,5
Chain relaxed
(stud screwed in)
SW2,5
Note the rigidity of the chain!
Factory setting =
chain fully tensioned
Chain fully tensioned
(stud protrudes by
3.5mm)
Always note the force-path diagram (see „KSA-T
WIN
S12
24V DC“
DATA
SHEET
“ chapter) and rigidity of the chain,
depending on the installed position!
In inclined and vertical uses, ensure that the chain becomes
rigid automatically. This is secured if the drive is instal-
led with the motor side (cable outlet) at the top (e.g. for
side-hung windows with drive installed at the main closing
edge).
Rigid back side of the chain
Curved chain path
If the chain does not retract in soft run mode,
the drive‘s transmission can be damaged,
resulting in drive failure!
!
!
!
Soft run
CLOSED position
13,5
13,5
max.
ca.
40
!
4
5
