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
57
9
suPPLEmEnt
insert a dowel and fix the manual chain
operator fastening bracket to the wall using
tapping screws and to the operator with
washers and nuts .
install the tension roller with the chain holder
at 1 m height and on the same axis with the
operator . Mark and drill the holes in the wall
for the tension roller fastening .
insert dowel in the drilled holes and fasten the
tension roller using tapping screws .
run the chain through the operator and the tension roller .
fasten the chain links using combination
pliers .
