Application Limits; Operating Limits; Preparatory Work For Installation; Installing The Limit Barrier System - Comunello LIMIT 500 Instrucciones De Uso

• If necessary, create a pedestrian entrance well clear of the operating
range of the barrier arm.

4.2 APPLICATION LIMITS

LIMIT 500:
• Use an end rest for arms more than 3 m long
• If you wish to install a skirt, it should be no more than 4 metres long
LIMIT 600/800:
• Use an end rest for arms more than 3 m longo
• If you wish to install a skirt, it should be no more than 7 metres long
LIMIT 500/600/800:
• Before installing the operator check that its specifications are within the
operating limits shown in the chapter "Product Technical Specifications"

4.3 PREPARATORY WORK FOR INSTALLATION

• Assemble counterplate and anchor bolts (FIG. 2A for LIMIT 500, FIG. 2B
for LIMIT 600-800)
• Embed counterplate and anchor bolts in concrete (FIG. 3A)
• In the case of an existing concrete footing drill 4 holes for the screw
anchors as shown in FIG. 3B.

4.4 INSTALLING THE LIMIT BARRIER SYSTEM

4.4.1 INSTALLATION:

• Remove the front cover using the supplied key (FIG. 4)
• Place the pedestal on the counterplate, routing the power and
accessories cables through the cable inlet hole. Secure the pedestal
with the nuts and washers supplied (FIG. 5)
Arm assembly:
• To create an arm of 7 or 8 metres long, assemble 2 sections (available
in 3-4-5 metre lengths)
• When using a round arm (LIMIT 800) use the specific joint as shown in
FIG. 6A
• When using a rectangular section arm (LIMIT 500 and 600) use the
specific joint as shown in FIG. 6B
• Where required, attach the adhesive LED strip in the channel over the
full length of the arm (FIG. 7A)
• Insert the impact protection strip in the specific guides, stopping at a
distance of 175 mm from the opposite end FIG. 7B. The rubber impact
protection strip cannot be fitted on round section arms.
• Secure the end cap to one end of the arm, as shown in FIG. 8A
for LIMIT 500/600 with impact protection strip, FIG. 8B for LIMIT
500/600 without impact protection strip, and FIG. 8C for LIMIT 800.
If the arm is composed of several parts, the end cap must be fitted
to the shortest section.
Installing the arm:
• Release the operator as described in heading 4.4.3
• Fix the arm support to the protruding pivot at the rear of the frame and
ensure it is in the "arm horizontal" position (FIG. 9A) and that the internal
mechanism is in the position shown in FIG. 9C. Smear threadlocker on
the 4 central screws as shown in FIG. 9A and FIG. 9B
• When using a round arm, use the specific support as shown in FIG. 9B
• Make sure the arm is fully inserted into the support.
• Close the support by fitting the cover (FIG. 9A – FIG. 9B).
Assembly of the linkages:
• In the case of LIMIT 600 and LIMIT 800 couple rocker arm A to the drive
shaft via linkages B and C (FIG.10A) appropriately assembled for RH
units (FIG.11A) and LH units (FIG.11B) with the addition of threadlockers
(FIG.10A)
• In the case of LIMIT 500 the linkages are not present.
Fitting the springs:
• If the barrier system is locked, to release it proceed as illustrated in
heading 4.4.3
• Bring the arm to the vertical position (FIG. 12)
• Secure the spring (single or double) at the top and at the bottom as
shown in figures 13A, 13B and 13C
• When installed, make sure the arm is counterbalanced by the spring as
shown in figures 14A and 14B
• Choose the appropriate spring by referring to the following table
24
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LIMIT 500
BAR ASSEMBLY
AND SPRING CHOICE
Bar
Bar with bar cover kit
Bar with bar cover kit and led
Bar with swing down support
Bar with bar cover kit and swing down support
Bar with bar cover kit, led and swing down support
Bar with curtain
Bar with upper bar cover and curtain
Bar with upper bar cover, led and curtain
Bar with upper bar cover,
led, curtain and swing down support
Small spring AC 530 Medium spring AC 540
LIMIT 600
BAR ASSEMBLY
AND SPRING CHOICE
Bar
Bar with bar cover kit
Bar with bar cover kit and led
Bar with swing down support
Bar with bar cover kit and swing down support
Bar with bar cover kit, led and swing down support
Bar with curtain
Bar with upper bar cover and curtain
Bar with upper bar cover, led and curtain
Bar with upper bar cover,
led, curtain and swing down support
Small spring AC 530 Medium spring AC 540
LIMIT 800
BAR ASSEMBLY
AND SPRING CHOICE
Bar
Bar with swing down support
Bar with joint
Medium spring AC 540 Double spring AC 550
Spring pull adjustment:
With the operator released (heading 4.4.3), bring the arm manually to
approximately the mid-point of its excursion (45°) FIG. 14 and release it.
If the arm tends to rise or fall, the spring must be adjusted, rotating it as
shown in FIG. 15.

4.4.2 LIMIT SWITCH ADJUSTMENT

The LIMIT barrier system is equipped with electromechanical limit switches and
two bumpers that damp the impact against the limit switches (FIG. 16A).
It is essential to make sure the bumpers are adjusted in such a way that the
limit switches can be operated. Make sure the limit switches trip correctly; if
necessary, adjust the actuator cams as shown in FIG. 16B
Proceed as follows to adjust the bumpers:
• Release the arm as described in heading 4.4.3
• Screw or unscrew the bumper pads on the plate as shown in FIG. 16A
• Secure the bumpers with the locknuts

4.4.3 MANUAL RELEASE

• To release the operator, so that the barrier arm can be moved by hand,
turn the key counter-clockwise and open the front hatch as shown in
FIG. 17.
5 PREPARATION FOR ELECTRICAL
CONNECTIONS
• Remove the front cover using the supplied key (Fig.4)
• Connect the yellow/green wire (protective earth) to the terminal eye as
shown in FIG. 18A for LIMIT 500/600, or connect the protective earth to
the board as illustrated in heading 10.1 for LIMIT 800
• Bring the wiring to the electronic circuit board located at the top of the
operator, routing the cables along the rear wall as shown in FIG. 19A
and FIG. 19B.
LENGTH (meters)
1,5 2,0 2,5 3,0 3,5 4,0 4,5 5,0
LENGTH (meters)
2,0 2,5 3,0 3,5 4,0 4,5 5,0 5,5 6,0
Double spring AC 550
LENGTH (meters)
6,0 6,5 7,0 7,5 8,0