8
If pillar dimensions or hinge position do not allow the installa-
tion of the operator, cut a niche into the pillar (as shown in Fig.
6) in order to maintain the proper A dimension. The dimen-
sions of the niche should enable easy installation, rotation
and operation of the manual release device. .
6½
4⅞
4⅛
4¼
2⅞
2
2½
3¼
1½
2½
Dimensions in Inches
The rear bracket can be assembled in different configurations
to give an array of options to acheive the proper values of
the dimensions
A
and
B
.
Fig. 7 shows some of different assembly options of the
bracket; all the intermediate positions can also be obtained.
The configuration chosen must permit the assembly of the
bracket using both securing bolts.
2.2.1 General Rules for Determining Installation Values
• To obtain opening of the leaf to
90°:
A+B=C.
• To obtain opening of the leaf more than
90°:
A+B<C.
• Lower A and B values produce higher peripheral leaf speeds.
• Limit the difference between value A and value B to within
1
½
inches, greater differences may cause variations in
speed during opening and closing gate movements.
• Maintain a Z value that keeps the operator from hitting the
pillar.
• The mechanical stops intervene during the first and final 1
½
inches of the stroke. Not utilizing the entire operator stroke
could limit the possible adjustments or reduce them to zero.
2.3 Installing The Operator
To correctly install the operator, follow the procedure below:
1. Secure the fixed part of the rear bracket in the position
determined previously, using a suitable assembly method
depending on the material of the pillar. In case of steel
pillars the bracket may be welded directly to the them,
see Figures 8 and 9.
IMPORTANT: make sure that the bracket is perfectly horizontal
using a level.
Fig. 6
Fig. 7
Fig. 8
Fig. 9
