GILGEN BF-760 Instructions De Montage Et D'exploitation page 14

4 Start-up
Perform the following steps in the order given to ensure trouble-
free gate operation:
4.1 Adjustment of anti-crushing system
The drive unit BF-760 with deceleration ramp is equipped with an
anti-crushing safety system that stops the gate should an obstacle
be encountered and thus prevents persons and obstacles from
being squeezed.
Warning:
Adjust the anti-crushing system's torque according
to applicable standards, but do not exceed 150 N of
force at the outer edge of the gate. Use a spring
balance to ensure that the force at the outer edge
of the gate is measured accurately.
Turn the bypass valve screws as shown in Fig. 19 to set the anti-
crushing system's threshold. The red screw adjusts torque for anti-
clockwise leaf movement. The green screw adjusts torque for
clockwise leaf movement.
- Turn the screws clockwise to increase torque.
- Turn the screws anti-clockwise to decrease torque.
4.2 Adjustment of internal travel stop screws
The BF-760 drive unit has adjustable deceleration ramps both in
opening and closing positions for use with gates which open to
angles of 90° or more.
Deceleration starts at 10° from the setting of the internal travel stop
adjusting screws (A/B; Fig. 20).
Note:
The drive unit is delivered with the travel stop
screws screwed fully in, which corresponds to the
maximum leaf opening angle.
Proceed as follows to set the internal travel stop adjusting screws.
- Release the operator (see chapter 6).
- Manually move the leaf to the closed position limit stop.
- Slacken off the lock nut from the closed travel stop adjusting
screw (A; Fig. 20).
- Slacken off the closed travel stop adjusting screw (Fig. 21) until
the leaf starts moving (anti-clockwise).
- Screw in the closed travel stop adjusting screw again by two
turns (clockwise).
- Tighten the lock nut.
- Manually move the leaf to the opened position limit stop.
- Slacken off the lock nut from the open travel stop adjusting
screw (B; Fig. 20).
4680-999-02_04.97.p65
E
- Slacken off the open travel stop adjusting screw (Fig. 21) until
the leaf starts moving (anti-clockwise).
- Screw in the open travel stop adjusting screw again by two turns
and tighten the lock nut (clockwise).
Note:
Make sure that the leaf always strikes the mechanical
limit stops on the ground.
- Re-lock the drive unit (see chapter 6).
If you wish deceleration to start at a lead angle of less than 10°,
screw in the corresponding travel stop adjusting screw a couple of
turns.
4.3 Adjustment of deceleration ramp
The deceleration ramp can be adjusted on both opening and
closing by turning the relevant adjusting screws as shown in Fig.
22.
- Turn the screws anti-clockwise to reduce the intensity of the
deceleration.
- Turn the screws clockwise to increase the intensity of the
deceleration.
Attention:
Reduce deceleration action to a low setting if the
system normally has to work in ambient tem-
peratures above 20 °C. This avoids deceleration
becoming too abrupt when the temperature drops.
5 Angles of opening 90°
If the total angle of opening of the leaf is less than 90°, the 760 drive
unit allows deceleration to be active only on the closing cycle. To
ensure trouble-free operation, before you fix the operator inside
the foundation box, move the leaf manually to a distance D from
its fully closed position:
D = L x 0,76 (Fig. 23)
See chapter 4.2 above for details on how to set the internal closed
position travel stop adjusting screws. Adjustment of the internal
open position travel stop has no effect.
6 Manual operation
If the gate ever has to be operated manually as a result of a power
failure or malfunction, release the gate with the key release device.
The release device itself, without the release lock, is supplied
within the operator's skinpackaging. The key lock is available as
accessory. See Fig. 24 to fit the key lock to the release device.
The release device must be fixed to the operator as shown in Fig.
25 to ensure that the gate can be released from the inside and the
outside.
4680-999/02
BF-760
13-22
L = leaf length