
The basic protection used by KRISPOL in the rolling steel grilles is the bolting lock, operated from two sides, installed in the armour lower strip from the internal side. The application of the lock makes it impossible for intruders to raise the bolted grille from the outside.
THE LOCK SAFETY SWITCH used in the grilles with an electric drive. Thanks to it, the grille will not start working when the lock is shut.EMERGENCY BRAKE preventing the grille from sudden, uncontrolled falling down.
EDGE PROTECTIONS – optical and pneumatic, being the additional equipment of the grilles with an electric drive. Their application protects against crushing. When the grille closed encounters any obstacle (e.g. regular cardboard) it stops automatically and then raises.
PROTECTION AGAINST ROLLING ONTO THE SHAFT – used in the grilles with an electric drive. Owing to this protection, the grille automatically stop when any unwanted element gets to it.
PROTECTION WHEN SPRING BREAK DEVICE CRACKS – used in the steel grilles. Thanks to this protection the grille does not fall down violently if a spring break device cracks.
PHOTOCELLS – the grilles additional equipment. Their application protects against crushing. The grille raises automatically when any obstacle appears at the level of the photocells.