RIB NORMAL Operating And Installation Instructions page 19

ADJUSTING THE LIMIT SWITCHES
The barrier is normally supplied to you with its limit switches already adjusted to allow an
Ideal movement of the boom. If the base plate has not been cemented correctly on level,
the boom may not be perfectly horizontal or vertical, therefore producing a poor aesthetic
result for the system. In order to avoid this, you can modify the mechanical trajectory of
the boom, adjusting the limit switches with two wrenches n.9.
The electric limit switches can be adjusted, modifying the position of the pawls A
mounted on the disk. To do so, unloose the bolts that fix the pawls to the disk with a
setscrew wrench n.10.
ADJUSTING THE SAFETY CLUTCH
To adjust the safety clutch, use a ring nut wrench n.30-32, release the ring nut E and
tighten the ring nut D clockwise, in order to increase the power transmitted by the motor
to the boom.
Make sure the boom stops and slightly resists movement when it comes down. Block the
ring nut E again when you have finished the adjustment.
ADJUSTING THE BALANCING SPRING
The barrier is supplied with its balancing springs already adjusted.
If extra weights are added to the barrier boom (e.g. pneumatic or photocell-type safety
strips), you need to balance the boom again. If the boom tends to drop quickly when it
moves down, modify the balancing springs.
To do so, raise the boom by hand or by means of the electric devices until it reaches its
vertical position. Then use a setscrew wrench n°24.
You just need to release the check nuts and screw the nuts under the springs clockwise,
so as to Increase the lifting power of the boom.
If the boom tends to stop during its upward movement, adjust the external clutch of the
operating device using a ring nut wrench n. 30-32 (check the movement of the boom
before tightening the springs).
L=6mt
ACG8511
ACG8511 + ACG8281
ACG8511 + ACG7090 + ACG7095
ACG8511 + ACG7090 + ACG7095 + ACG8281
ACG8511 + ACG7090 + ACG7095 + ACG8070
ACG8511 + ACG8070
ACG8547
ACG8547 + ACG8281
ACG8547 + ACG8070
*
a 0 cm
a - Boom
a + b 0 cm
a + c 0 cm
b - Hanging support
a + b + c 0 cm
a + c + d 0 cm
c - Safety strip equipped with a photocell ´Fotocosta´
a + d 0 cm
e 0 cm
d - Column with magnet
e + b 0 cm
e + d 0 cm e - Boom with rack
Fig.7
Fig.8
Fig.9
Pag. 19 di 36
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