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8) Manually check that the gate opens freely and completely,
stopping on the external positive stops and that the movement
of the leaf is smooth and without irregular friction.
9) Place the drive unit protection cover on the box as shown in
fig.21.
10) Complete the concrete pouring around the box. To avoid
possible deformation make sure that the box cover.is in place
3. FINAL OPERATIONS
3.1. ADJUSTING THE BYPASS VALVES
The 750 operators features a built in anti-crushing system that
guarantees to stop the gate movement in the presence of an
obstacle. The anti-crushing system is adjusted using two bypass
valves, one for the opening movement and one for the closing..
It’s recommended to adjust the bypass valves so that the
operator doesn’t creat more pressure on the gate than what’s
necessary to reliably move it.
The screws shown in fig. 22 are used to set of the bypass valve
tripping threshold:
The red screw adjusts the closing pressure of the leaf.
The green screw adjusts the open pressure of the leaf.
To increase pressure, turn the screws clockwise.
To reduce pressure, turn the screws counterclockwise.
4 MANUAL OPERATION
Should manually operating the gate be required due to power
outage or operator’s problems, use the release lever as shown
in fig.23.
To lock the system again move the lever back in its original
position until it reaches its internal stop point.
5 MAINTENANCE
Periodically check the oil level using the references on the oil
filler cap rod (fig.15).
Check the gate structure every 6 months.
When required, top up oil using only FAAC HP OIL.
Periodically check both the correct setting of the by-pass screws
and the efficiency of the manual release system (see the
corresponding paragraphs).
Periodically check the gate structure and in particular ensure
that the top hinge is in perfect working condition.
The system’s safety devices must be checked every 6 months.
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23
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