Technical data

Rev. 9/27/2009 Manual #001451 32
Operation
High Speed Doors
Instructions for Using Over-Travel Brake System.
About the Over-Travel Brake System
Your UltraSecure door is fitted with an over-travel
brake system to stop your door in a controlled man-
ner in the event a condition should arise leading to
the door traveling past its upper limits. The system
terminates the open command and immediately en-
gages the gear motor brake. But, due to the high ro-
tational inertia of the barrel, an additional mechani-
cal brake is utilized, catching the bottom slat for a
controlled deceleration. This addendum shows how
to reset the system to get your door operational.
Prior to resetting the brake, you must lower the door
to the open position. Follow electrical instructions
for lowering process.
Notice: Inspect the door
for damage prior to putting
it back in service. Repair
door where necessary.
Failure to perform inspec-
tions and repairs can lead
to personal injury, property
damage or death.
Fig 2. Safety brake de-
ployed.
If an over-travel event occurs, hooks mounted on the
bottom slat engage the brake yoke. The yoke is then
dragged through the pair of brake clamps finally com-
ing to rest at the end of the clamp (fig 2.).