Normstahl Prominent Notice De Montage Et De Fonctionnement page 6

EN
[D000334] 16. FREQUENtLy ASKED QUEStiONS
The door opens difficultly/ suddenly drops. The door leaf is not balanced
(the door drops or opens by itself).
High resistance is observed during door operation. The door leaf does not
open smoothly.
The lock does not open/ close. Incorrect operation of the lock.
Bolts do not latch the door.
Bolts do not lock the door, in case of door with drive.
In case of any doubts, or if a cause remains unsolved, please contact the authorized service centre.
6
Assembly and Operating Instructions – Up and over garage door
Cause
• Check the spring tension. For this purpose, open the door to its half open
position, the door should remain in this position. If the door clearly drops,
increase the spring tension. If the door clearly rises, decrease the spring
tension.
• Check the rollers during opening and closing for correct and smooth rota-
tions. If the rollers put resistance or fail to rotate, they should be adjusted and
lubricated.
• Check the guides for dirt that may cause incorrect door operation.
• Check the proper mounting of guides (diagonals).
• Lubricate the barrel insert with graphite grease.
• Check the operation of a bolt. Lubricate, if any resistance is observed.
• Check the correct mounting of the lock connector with bolt.
• Check the operation of lock blocking latch.
• Check the operation of bolts, and lubricate, if necessary.
• Check the connection of latches with the door lock. In case of doors
equipped with rope, increase the rope tension, if necessary. In case the door
is equipped with rod, replace the rod.
• Check the limit switch.
• Check the position of microswitch for the mode of up and over door.
• Check the tension of the rope between the lock and drive, and adjust, if
necessary.
IIiO/BGU/12/2012/ID-93551
Solution
Technical documentation
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