RIB SUPER 4000 Dibujos Técnicos página 31

ELECTRIC SAFETY DEVICES
For a sliding gate weighing more than 300 kg it is obligatory to fit 2 pairs of photocells and
mobile sensors in such a way as to protect any potentially dangerous openings in the gate
(fig. 6). The photocells must be located at a height of between 40 cm and 60 cm. One pair
of photocells must be located inside the premises and adjusted so that they cover the
entire travel distance of the gate, while the other pair must be located externally between
the gateposts. In order to avoid the risk of personal injury the gate and the railings must
be covered with fine metal mesh for a distance along the railings such as to cover the full
travel distance of the gate) and in any event there must be no openings of sufficient size to
introduce a hand. Any other shear points or entanglement/crushing points must be protected
or covered (see mechanical safety strip) (EN 12453 norm).
Gate movement can be signalled by a flasher unit installed nearby.
Use L1/R2 electronic control board.
For connections and technical data of accessories refer to the appropriate booklets.
EMERGENCY RELEASE
To be undertaken after disconnecting power supply.
The operator is irreversible and keeps the door closed even without a lockset.
To open the gate manually, in open the motor cover and turn the knob «A» anti-clockwise.
To restore electric working you have to turn the lever clockwise (Fig. 7).
LIMIT SWITCH ADJUSTMENT (Fig. 8)
To adjust the assembly: release nuts G, after establishing the direction of movement of cam
H for opening and closing, position the two limit switches, F, by turning knobs P and judging
by sight.
After checking for correct operation of the two microswitches, precisely adjust their positions
so that the gate will stop in the desired position during opening and closing.
Then fasten nuts G.
N.B. The standard limit switch is used for gates of a max. Iength of 13 meters.
If the gate is longer, «Special» limit switches for gates of up to 18 meters can be supplied.
ADJUSTMENT OF THE SAFETY CLUTCH (Fig. 9)
N.B.: These operations must be executed only after the power supply has been suspended.
To adjust, lock the motor shaft (A) with a n° 17 hex unrech, unscrew the locking nut (B) with
a n° 22 wrench.
To increase thrust force, tighten the grub screw, C, with a n° 6 hex wrench.
Let the gate move electrically a number of times, holding it with your hands so that the thrust
force is slightly higher than that actually required to move the gate (UNI 8612 REGULATIONS).
When adjustment has been completed, remember to fasten the nut at the motor shaft.
MAINTENANCE
To be undertaken only by specialized staff after disconnecting power supply.
Clean the sliding guide of stones and dirt periodically only when the gate does not move.
ALWAYS USE AN OPEN/CLOSE PUSH BUTTON WHICH IS DESIGNED TO PREVENT THE
POSSIBILITY OF SIMULTANEOUSLY SENDING THE OPPOSITE COMMAND OF OPENING
AND CLOSING AND AVOID SO A DAMAGE TO THE MOTOR.
A) Sliding gate
B) External photo-electric cells
L) Safety strip fixed to column
I) Photo electric cells (internal)
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G
B
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7
8
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