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ENGLISH
ENGLISH
9. ADJUSTING THE SPRING
9.1. SPRING PRELOADING
If door movement is not uniform (e.g.: door not closing
completely or closing with too much force) proceed as follows
to adjust the spring preloading:
1) Cut power to the automated system and release from the
door the arm secured directly on the transmission shaft;
2) Rotate the arm until the stop-point screw (fig. 21 ref.4) is in
line with the inspection slot (fig. 21 ref. 3) ;
3) Remove the screw, while keeping the arm in position;
4) To increase preloading: rotate the arm in opening direction
until the next fixing position of the stop-point screw (fig.21
ref.5) is in line with the inspection slot and fix the screw
again.
To reduce preloading: rotate the arm in closing direction
until the next fixing position of the stop-point screw (fig.21
ref.5) is in line with the inspection slot and fix the screw again.
5) Reinstall the arm correctly (see par.3.3.);
6) Run a new SETUP cycle.
9.2. CHECKING SPRING EFFICIENCY
We advise you to periodically check the efficiency of the spring
- this is the procedure:
1) Select the Manual function;
2) Remove the protective device of the drive system (see fig. 1
ref. 6);
1) With the door closed, trace a vertical line on the spring (fig.
22 ref.1 );
2) Open the door completely;
3) Check the line you had traced.
If distortion is not uniform along the whole spring height (fig.
22 ref.2 ), but is irregular (fig.22 ref.3 ), lubricate the spring
with specific sliding grease.
Fig. 22
Closing limit-switch
Opening limit-switch
Slot for inspection of stop-point screw
Stop-point screw
Fixing positions of stop-point screw
Fig.21