M8
locknut
M8 adjusting
screw
ADJUSTING THE MECHANICAL CLUTCH
With all MEC 200 LB motors, torque ie. the force the motor can develop is controlled by a mechanical clutch.
To increase the torque, unlock M8 nut, tighten the dedicated screw and lock M8 back.
Pic. 9
Pic. 10
En
g
lis
h
External limit switch
fixed to the wall
External limit switch
fixed to the wall
Limit switch striking
plate (to get locally
made) fixed to the
upper section of the
chain
EXTERNAL LIMIT SWITCHES
MEC 200 LB with external limit switches (recommended for doors wider than 8 meters) does not require any adjustment: the open
and close limit switches are to be positioned in a way they correspond to the actual open and closed positions of the door.
The contact striking bracket in this case is to be fitted on to the upper chain section.
IMPORTANT: with this solution, it is no longer required that the door be brought back to the original position in
which it was disengaged from the motor; the action of the external limit switches always occurs in coincidence
of the opening and closing positions of the door.
!
MEC 200 LB
8
Chain-drive electromechanical operator
for sectional, folding and industrial doors