Bernal G 501, User Manual

Page: 11 / 62

11
GB
3.2.2 INSTALLATION OF THE RAIL ON THE CEI-
LING
Measure the door width and trace the middle of the door on the
upper edge of the door as well as the lintel.
Recommendation for alignment of the drive in the longitudinal
axis of the door (Picture 20): Open the door fully and transfer
the marking from the upper edge of the door to the ceiling.
Open and close the door once fully to determine the highest
door running point TLP (a). The TLP is the point of least distance
between the upper edge of the door and the ceiling.
The lower edge of the door fastening bracket / the rail is opti-
mally placed about 10-20 mm above the TLP (b).
For a maximum angle α = 30° (c) the rail should not be fastened
higher than 50-70 mm (d) above the closed door.
Observe horizontal alignment of the rail (e). A minimum clea-
rance between the upper edge of the door of 35 mm above the
whole area of movement of the door is needed for orderly func-
tioning.
If the above-mentioned dimensions are not complied with, ad-
ditional fastening material is necessary (push rod extension
and/or a suspension bracket).
Trace the lintel fastening bracket in the middle of the door
based on the previously determined height (a).
Protect the drive and rail from drilling dust.
Drill the holes (b) and clean the area–if necessary use a diffe-
rent drill diameter according to a suitable fastening material!
Put the dowel in place (c).
Not shown: as an alternative the lintel fastening can also be
fastened to the ceiling turned upwards through 90°.