3 the hardware required to.
Overhead door entrapment protection.
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.
1 the operator by manufacturer and model.
The bottom sensing edge stops and reverses the door upon contact with an obstruction.
Additionally the revised ul standard requires that the instructions for combination sectional overhead gdos must specify.
In alberta the applicable standards are part 3 12 d of the code4 which.
The door will require a manual override before any automatic actuation device like a timer can be used after the reversing function occurred.
Sensing edges provide entrapment protection for motor operated doors by offering an auto reverse or auto stop feature.
Ohs compliance overhead doors systems are subject to ohs compliance requirements.
For soft leading edge doors the flexibility of the edge itself helps prevent entrapment.
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.
2 the doors by manufacturer model and maximum and minimum door width and height required for compliance to the entrapment protection requirements.
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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.
