FAAC 760, Installation Manual, Page: 23 / 31

23
Warning ! Do not increase the pressure adjustments
excessively in an attempt to speed up the gate. Doing so
can increase the risk of serious injury.
Adjust the Beginning of
the Braking Phase
You need to adjust the start of the braking phase for
opening and closing. You adjust the braking to no more
than 10 deg before fully closed and fully opened. Figure
23 shows the location of the adjustment screws for the
beginning of the braking phase.
Note : The 760 Operator ships from the factory with the
braking phase adjustment screws turned all the way
clock-wise. This position of the screws corresponds to
no braking phase whatsoever.
If you have a CBAC model with hydraulic locking, you
first need to use the Manual Release to disengage
hydraulic operation of the 760 Operator before you
adjust the screws for defining the beginning of the
braking phase.
To adjust the start of the braking phase, first make sure
the deceleration adjustment screws are not tightened
completely. Unscrew them at least a couple of turns (see
Figure 24).
A
D
C
B
A Brake adjustment bolt for closing
B Brake adjustment bolt for opening
C Opening bleed screw on CR models
D Closing bleed screw on CR models
Figure 23. The location of the brake
adjustment bolts for the beginning of the
braking phase and the bleed screws.
Then, place the gate leaf in the fully closed position
against the closed limit stop. Next loosen the brass lock
nut from the brake adjustment bolt for closing. Then,
using an 8mm open end wrench, turn the square-headed
brake adjustment bolt for closing counterclockwise until
the gate leaf begins to move (see Fig. 12 or 23). Then
turn the bolt one half of a turn clockwise and retighten
the brass lock nut.
Manually move the gate leaf to the fully opened position
against the opened limit stop. Loosen the brass lock nut
for the opening brake adjustment bolt. Next, turn the
square-headed opening brake adjustment bolt
counterclockwise until the gate leaf starts moving. Then
turn the bolt one half of a turn clockwise and retighten
the lock nut.
Note: If your gate leaf opens less than 90 deg, setting
the beginning of the braking phase may have no effect
on the gate leaf. The only way to adjust the beginning of
the braking phase is with the position of the gate leaf
and the rack when you mate the rack and pinion. Call us
for details.
Note : If you wish the braking of the operator in the
opening or closing direction to start at less then 10 deg,
turn the corresponding bolt another couple of turns.
There is no way to begin braking at more than 10 deg.
Adjust the Braking Intensity
Figure 12 shows you the location of one of the
deceleration adjustment screws; the other is similarly
located on the other end of the operator. Figure 24
shows that you turn the adjustment screws clockwise to
increase the intensity of the braking and
counterclockwise to reduce the intensity of the braking.
Assemble and Install
the Manual Release
The parts for the Manual Release are shipped in the
shrink-wrapped package with other small parts.
To assemble the Manual Release, lay open the black
plastic Manual Release housing so that the FAAC logo
faces downward. You need to place in the ribbing on
one side of the black plastic the brass gear assembly and
the plastic gear assembly. The gears themselves for both
parts sit within the middle of the housing and engage
one another (see Figure 25).
Then you can gently fold the black plastic housing
around the gear assemblies. The black plastic housing
should snap shut if you have the access doors to the key
holes out of the way.