Operating instructions
– LBA4/6/7 – 2017 Version
58
•
Lubrication of the counterbalance unit (chain, quick link
and spring) to prevent oxidation
•
Check the position and condition of the counterbalance
spring
17 Malfunctions
17.1 Manual opening in the event of no voltage (LBA4/6/7)
A-
Open the barrier hatch using the key (standard key 405)
B-
Take the crank fixed on the side of the board
The crank is positioned on a contactor for cutting off the power supply of the electronic board (user
protection).
C- Insert the crank into the hole located on the side of the barrier
D- Rotate in the clockwise direction to raise the barrier or rotate in the anti-clockwise direction
to lower the barrier
17.2 Manual opening in the event of no voltage (LBA6R/63PK/7R/74)
In the e
vent of a power cut, the barrier opens automatically or the boom is “free” and can be lifted
manually.
To adjust the automatic lifting, see paragraph “9.4 Adjustment of the counterbalance”
Opening
Closing
B
C
D