12
GDO-11v1 SecuraLift
®
Owner Installation Instructions
09
fi g
08
fi g
10
fi g
Knockdown C-Rail Assembly
Note: Use the 12 teeth sprocket with Gdo-11v1 opener.
h. Engage the shuttle with the chain index and move
shuttle assembly to the centre of track. Make sure
the chain is engaged into the sprocket and also
wrapped around the centre of the pulley.
i. Use a spring scale to measure required force to pull
the shuttle, adjust 1/2” tension hex bolt (Fig. 09) to
tension the chain.
j. Move the shuttle back to the centre of the track to
re-test the force with spring scale (Fig. 10).
k. Continue to adjust adjust the tension hex bolt until a
force of 8kg to 8.5 Kg is achieved.
Door end Opener end
Door end Opener end
Tension hex bolt
Centre of the track
9 teeth sprocket
12 teeth sprocket
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