Overhead Door Entrapment Protection

And b for use only with vertically moving garage doors.

Overhead door entrapment protection.

2 the doors by manufacturer model and maximum and minimum door width and height required for compliance to the entrapment protection requirements. In alberta the applicable standards are part 3 12 d of the code4 which. Injuries to workers who are struck or crushed by commercial overhead doors are always a concern in industrial workplaces. The door will require a manual override before any automatic actuation device like a timer can be used after the reversing function occurred.

I shall be provided with an inherent secondary entrapment protection device as described in 1211 8 a and f 1211 10 and 1211 12 and is. Warning signals such as audible alarms or flashing lights represent the third line of defense. Fortunately injuries from overhead doors and roll up doors can be avoided. A a combination sectional overhead garage door operator system as described in 1211 6 c.

3 the hardware required to. Sensing edges provide entrapment protection for motor operated doors by offering an auto reverse or auto stop feature. The criteria for an inherent entrapment protection system is that the system shall sense an obstruction and stop the motion of the door or gate and initiate reversal of the door gate within two seconds. By and crushing incidents1 2 3 involving overhead doors that are avoidable given regular door maintenance inspections and the inclusion of recommended safety entrapment devices.

Additionally the revised ul standard requires that the instructions for combination sectional overhead gdos must specify. For soft leading edge doors the flexibility of the edge itself helps prevent entrapment. The bottom sensing edge stops and reverses the door upon contact with an obstruction.