Marantec 115694 Manuel d'instructions télécharger pdf (Page 27)

21. TENSION ADJUSTMENT

Your preassembled rail comes with the tension adjusted to factory

specifications. There should be no need for further adjustment.

However, if exposed or subjected to unusually harsh operating

conditions, the tension may need to be readjusted during the life

of the opener.

CHECK PROPER TENSION (Fig. 58):

 Release trolley from belt or chain, then examine the setting of

the tension adjustment at the header end of the rail.

 Proper tension is set when the tension nut is tightened just

enough so that the washer will be spaced approximately 21mm

or 53/64" from the stationary rail end-stop arch.

 If the gap between the washer and the rail end-stop arch is too

big or too small, the tension needs to be adjusted.

ADJUST THE TENSION:

 To increase the tension and tighten the belt or chain, turn the

tension nut clockwise with 7/16” wrench until the washer is

spaced properly from the rail end-stop arch.

 Once the washer is spaced correctly, any additional tightening

will overtighten the belt or chain and may cause damage to the

system.

 To loosen the tension, turn nut counterclockwise.

 Reattach trolley.

Fig. 58

Proper Tension Adjustment

Proper Space 21mm + 0.5 or approximately (53/64”)

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Marantec 115694 Manuel d'instructions Page 27