DONATI SOLLEVAMENTI S.r.l. - Via Quasimodo,17 - 20025 Legnano (MI) - Tel. 0331 14811 - E: [email protected]
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B) - Internally restoring the brake play:
•
To reset the correct axial stroke on the motor shaft
(
≅
1mm), proceed as follows
:
1. Operating above ground level, remove the plastic grid (aerator), unscrewing the four screws completely,
as shown in (fig. 16);
2. Completely unscrew the three screws form the locking ring nut on the brake block (fig. 21);
3. Remove the ring nut from the brake block, if necessary using a screwdriver in the slot (fig. 22);
4. Turn the ring nut counter-clockwise 360° (1 complete turn), considering that a complete turn of the ring nut
generates an axial shifting of the brake block of 1 mm;
5. Draw the brake block in towards the ring nut, matching up the boreholes;
6. Reset the three screws into their original housings on the ring nut, fastening them onto the block (fig. 23);
7. Reassemble the grid (aerator), fastening the four screws back on completely (fig. 24).
When these steps have been completed, control the brake setting and play, to make certain they are correct,
verifying (firstly on empty and subsequently with a nominal load) that:
•
the motor rotates freely, without irregular noises, brake chaffing or the brake cover overheating.
•
the brake operates silently, and the
“DGT”
drive units
and
endcarriages
brake without any obvious
slipping.
fig. 21
fig. 22
fig. 23
fig. 24
If the brake adjustment has been performed several times and the desired braking is not
achieved, replace the motor cover as outlined at sect. 6.6.1, ordering original spare parts
EXCLUSIVELY.
