i n s t a l l a t i o n o f g a r a g e a n d i n d u s t r i a l s e c t i o n a l d o o r s
65
9
suPPLEmEnt
install the sprocket on the shaft, having
inserted the bushing key in the key slot
before . fix the sprocket on the shaft using
fastening bolts М8х25 mm . fasten the
sprocket on other side of the shaft in a similar
manner .
Position the support bracket close to the wall
so, that vertically it is in one line with the
bottom bracket, fastened to the corner support
and to the wall . the center-to-center distance
between the shafts (a) can vary from 240 up
to 393 mm depending on the lintel height .
install the top support bracket according to
these dimensions . the dimension is indicated
in the mounting card . in a similar manner
fasten the support bracket for the second
shaft on other side of the embrasure .
install the second shaft with a spring in the
top support brackets bearings .
А
А
