11/2015
NT BEA-G6EVO
V3.0
EN
p. 33/58
5.2.4. Limit-switch sensors control – Check point N°4
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 point 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 at the top and bottom.
In case of malfunction, check the connections on the technical control unit and inside the bollard and, if the problem
continues, replace the limit switch sensor.
5.2.5. Solenoid valve control – Check point N°5
The solenoid-valve must work. Check the wiring and connections into the Bollard and inside the technical control unit.
See appendix NT-REVB.
5.2.6. Drainage efficiency control – Check point N°6
The drainage system must be able to evacuate 20 liters of water in five minutes.
To run the test:
Remove the cover and the bollard head, check that the inside of the casing is free of any sand, dirt or other foreign
bodies (if necessary, clean it). Pour 20 liters of water into the casing and check that it evacuates in five minutes.
If any drainage problem occurs, clean the drainage conduit by liquid suction and repeat the operation several times
until the drainage system works correctly.
Figure 39: Components bracket
Figure 40: Limit-switch sensor assembling
