5
2.5
Switch the opener into manual operation mode by pulling the manual release handle to enable the opener
drive to rotate freely.
2.6
Raise the door carefully, insert the opener into the door axle and ensure the two opener forks hold the door drum
wheel support. Push the opener inside the door roll as deep as possible (Fig. 4). In cases where the drum spokes
do not match the drive fork, fasten a block of wood or similar material to the drum that will hold firm when driven.
(Fig 6). Use washers to prevent the fasteners tearing out of the drum wheel.
2.7
Re-position the door shaft on the door support bracket and fit the specially supplied U-bolt (Fig. 5) over the axle /
drive assembly and tighten firmly.
2.7.1
In cases where the unit is installed where it can not be fastened to the door support bracket as in Fig.7,
the addition of a self drilling tech screw through the base of the clamp into the torsion bar, may be
necessary after clamping the U bolt to the torsion bar. This will prevent the motor drive unit slipping
around the torsion bar which will cause the limit positions to drift.
2.8
Remove the supporting prop, untie the rope and insert the door curtain back into its guides.
2.9
Manually open and close the door a few times to ensure the door runs freely and does not interfere with
unmoving parts of the opener.
NB! Ensure the manual release cord is free from snagging and can be activated
easily. Care must be taken that the cord does not snag and become tangled in the drum as the door travels up
and down. Protect the cord from slicing and wear, if routed over the edge of the mounting bracket.
Fig. 4
Fig. 5
Fig. 6
Fig. 7
