Bernal G 501, User Manual

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GB
Place the locking element (1) as shown on the end of the track.
Pull the locking bolt (3) of the guide roller unit through the lo-
cking element; put the locking spring (2) with its washer on to
the locking bolt and fix with the washer and self-locking nut (a).
If the nut does not fit (toothed belt / chain seems too short),
check that the toothed belt / chain is sitting cleanly on the gui-
de roller and the toothed belt pulley / chain pinion and check
the correct seating of the locking bolt.
Do not yet fully tighten the toothed belt or chain (b; note Figure
11 and Figure 12).
To facilitate fitting the drive head, the toothed belt should be
tensioned after fitting the gate / door attachment bracket (Fi-
gure 29).
When tensioning a toothed belt observe / ensure the correct
tension is set by means of a slight finger pressure in the midd-
le of the rail. The tensioning spring must not be fully pressed
together.
Press the lever for emergency release system on the pulley and
pull the pulley from the drive dog.
Check for ease of movement of the pulley over the full path tra-
versed by the door.
Lock the pulley again with the drive dog (pull over) and position
pulley in the middle of the rail.