0639-990-21---30j_2010.07.indd
SLA
m6
0630-637
6,4/12 x 1,6
M6 x 8
LB
500 g
10...20
=
=
B
A
hSk
0639-990/22j
Page 30 of 46
Operating instructions
7.2
Toothed belt ZARI
1. Check the tension of the toothed belt (by means of 500 g): measure 10...20 mm.
2. if required correct the tension: with des-
place the guide unit.
Attention:
Proceed carefully when tigh-
tening the toothed belt. An
obliquely mounted guide unit
respectively an insufficient or
an excessive tension of the too
-
thed belt increases its wear and
causes a noisy operation.
3. Setting the door center:
Slightly loosen both belt connection
pieces on the running carriage, shift
the sliding wings together until the
distances A and B are equal, then re-
tighten the belt connection pieces.
Attention:
Checking the OPen stop pi-
eces: in the OPen position, the
sliding doors must touch both
stop pieces.
