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8
Note: The spring must be able to compress and bounce
TIGHTEN THE BELT
during operation. Final tensioning can be performed after
installation if necessary. Over tightening the belt may
overload the system and cause excessive wear.
1.Tension the belt by adjusting the nut (1), on the pulley
assembly, clockwise until the spring is engaged.
2.Continue tightening to compress the spring and remove all the
slack in the belt. DO NOT OVERTIGHTEN but ensure belt is
firm.
3.36-38 mm as indicated in the diagram is normal.
9
FASTEN RAIL TO OPENER
1.Slide the RAIL BRACKET (1) onto the powerhead end of the
rail (A) around 200 mm.
2.Position the rail drive spocket (2) over the opener motor shaft
(3) and push down to install.
3.Secure the rail on the opener with two C-Rail brackets (4) and
the screws (5)Note: Only use 18mm Screws (item 9 in
Hardware Provided - Section 5).
This completes the assembly of the door opener to the rail.
ASSEMBLY SECTION
6
36 - 38 mm
1
1
5
4
2
A
3
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