Key Automation ALT3KF Instrucciones Y Advertencias Para Su Instalación Y Uso página 53

9 - MAINTENANCE
The automation systems for ALTK road barriers are designed and
manufactured to high quality standards. However, like any other ma-
chine, regular maintenance is required to ensure safety and maxi-
mise durability.
System maintenance must be carried out by qualified techni-
cians, in full compliance with the safety standards required by
current laws.
9.1 - Maintenance schedule
We recommend to carry out a general ALTK automation system
check every 6 months or every 50,000 opening/closing cycles. In
the case of systems submitted to intensive use, the frequency of
inspections should be doubled.
Please note the following points, which should be intended as a ge-
neral guide to the operations to be performed at regular intervals
in order to keep the automation system efficient, safe and in good
operating conditions:
1. Perform a general external inspection of the automation system,
checking the state of wear of the materials, paying particular at-
tention to signs of corrosion and/or cracks in the outer casing.
2. Check for bar integrity, making sure that there are no deforma-
tions
and/or cracks, particularly in the area where the bar is attached
to the barrier support plate. Check the integrity of the "omega"
shaped bar-holding bracket and the tightening of the bracket fixing
screws to the plate connected to the output shaft. Make sure that
there is no clearance such as to affect safety.
3. Check the integrity and efficiency of the PROFT rubber shock
protection profile with respect to the bar. A rubber profile partially
damaged or cracked, or not adequately fixed, will not effectively
ensure shock protection, affecting the safety of the automation
system.
4. In versions of bars formed by segments joined together by a joint,
check for perfect fastening and alignment of the two segments.
You may want to adjust the expansion bolts of the joint to restore
the correct interference and alignment. If, despite the adjustment,
it is no longer possible to return the bar to its optimal condition,
replace it altogether (kits ASTL4J, ASTL6J, ASTL8).
5. After removing the door of the barrier body, carry out a general
internal inspection of the system, checking the state of wear/
damage of all the materials making up the automation system,
paying particular attention to corrosion and/or cracks in the struc-
tural parts: replace any components showing signs of wear.
6. Check the ground anchoring stability of the automation system;
check the tightness of the nuts of the anchoring clamps/tie-rods
of the base plate of the cabinet and the integrity of the perimeter
welds of the outer casing with respect to the plate.
7. Check that all screw-down connections are tight as required.
In particular, check:
- The tightening of the bolts and nuts securing the ball joint heads
of the top spring tensioners with respect to the balancing lever
- on ALT3KF/ALT6K, the tightening of the top and bottom articu-
lated
heads of the vertical hexagonal lever connecting the motor lever
to the balancing lever
- the tightening of the lock nuts of the top spring tensioner
articulated heads with respect to the threaded bars
- on ALT4, the tightening of the balancing lever fixing screw with
respect to the drive shaft
Before carrying out maintenance disconnect any electrical po-
wer supply, including any backup batteries.
A few precautions and checks to be carried out at regular intervals
will ensure efficiency, longer working life and reliable operation of
safety systems.
- on ALT3KF/ALT6K, the tightening of the motor lever fixing screw
with
respect to the drive shaft
- tightening of the gearmotor fixing screws to the cabinet
- on ALT3KF/ALT6K, the tightening of the fixing screws of the sup-
port
flanges of the output shaft rear bearing
- ALT3KF/ALT6K, the tightening of the fixing screws of the support
collars of the output shaft front bearing
8. On ALT6K, check the tightening of the countersunk screw fixing
the
bar support plate to the square shaft (Fig. 14)
9. On ALT3KF/ALT6K check the articulated heads of the connecting
rod
M12 and of the tensioners M10, making sure that they are not
worn and that there is no slack in their movement. If this is the
case, replace them
10. Lubricate the articulated heads of the spring tensioners and the
vertical hex lever with fluid oil or spray grease.
11. Check the integrity and adjustment of the bar end stops (see
paragraph 5.4 "Bar angle adjustment"). If the screws are worn
and/or deformed, replace them with hex head screws M10x35.
12. With the bar in the closed position, check that the pitch between
the turns of the balancing spring(s) is regular and constant, wi-
thout any deformation suggestive of yield stress. If this is the
case, replace the spring(s) (see also paragraph 9.2 "Replace-
ment schedule").
13. Remove the plastic cover of the control unit box and check that t
here are no signs of overheating/burning of the connecting ca-
bles, connectors and electronic components making up the bo-
ard.
14. Check the function of the unlocking system: with the bar in a
closed position, manually release the gearmotor (see paragraph
5.3 "Bar unlocking") checking that this is done easily. When the
bar is released, check that it is easy to shift it by hand between
its open and closed positions, without experiencing any jam-
ming. Check that the strength required to move the bar during
opening, measured perpendicularly to the bar and 1 m from the
axis of rotation, does not exceed 220 N (about 22 kg).
15. When the bar is released, check that it is correctly balanced at
45°, adjusting the tension of the spring(s) if necessary by loose-
ning the lock nut and working the tensioner (see paragraph 5.10
"Bar balancing"). After completing the balancing operations,
re-tighten the lock nut to prevent unintentional loosening of the
tensioner.
16. After locking the bar again, using the control devices (control
button, transmitter, selectors, etc.), carry out tests for opening,
closing and stopping the bar, making sure that the movement
matches the expectations. Check that the angle of the bar is
EN
53