FAAC A952, Руководство пользователя, Страница: 35 / 94

A952 33 532310 - Rev.A
14
1
2
15
1
2
3.9 INSTALLING THE SHOE ARM
L
Depending on the application, the shoe arm may be upside down compared to the following diagrams. This does not
alter the sequence of operations.
The assembly instructions are valid for both types of arm (standard or short).
■
PRELOAD THE SPRING (ONLY FOR OPENING BY SPRING APPLICATIONS)
1. Install the arm on the shaft of the operator (
14
-1 ) and turn it in the opposite direction to that of door
opening (
14
-2 ), as far as the maximum permitted rotation set by the internal stop (do not force it further).
2. If space does not allow the maximum rotation to be reached in a single attempt, you can repeat the operation
several times: to lock the preload reached and prevent the arm from moving backwards when released,
insert the cam (
15
-1 ) onto the shaft, as close as possible to the mechanical stop (
15
-2 ).
3. Remove the arm from the shaft, reinsert it in the initial position and rotate it again.
4. At the end, after having reached the maximum rotation, keep the arm in position, remove the cam and
reinsert it, moving it back by two shaft teeth with respect to the mechanical stop, in order to leave some
space (about 20°).
5. Remove the arm.