11/2015
NT BEA-G6EVO
V3.0
EN
p. 44/58
6.4. STANDARD HYDRAULIC MOTORIZATION CORRECTIVE ACTION DETAILS
6.4.1. Limitswitch sensors replacement – Task N°10
The bollard is equipped with two limit-switch sensors (one at the top and one at the bottom) mounted into the casing
using the components bracket. Each sensor transmits to the management system's PLC the information on the
bollard’s position and contributes to the access safe functioning. The limit-switch is a normally open contact.
The bollard head is equipped with a detection magnet.
See appendix N° NT-REG for more detail.
Check the fastening and positioning of each limit-switch sensor: they must never touch the magnet. Check that they
properly detect the top and the bottom of the bollard.
In case of malfunction, check the connections on the technical control unit and in the bollard and, if the problem
continues, replace the limit switch sensor.
6.4.2. Hydraulic cylinder replacement – Task N°11
To perform this task, the bollard head must be cover free. See §6.2.1. for more details.
See appendix NT-RVH for more detail
Figure 83: Removing components bracket
Figure 84: Limit-switch sensor assembling
Figure 85: remove the central
screw that holds the cylinder
