Controlled Products Systems Group SWINGSMART DC 20 - Manual (Page 32)

Gate Bracket and Linkage Arms
1-10 SwingSmart DC Installation and Reference Manual Revision E
Figure 1-10.
NOTE
The linkage tubes used for the arm can be drilled and bolted or welded together. Do the finishing
work AFTER the arm and gate adjustments are complete. See
Completing Gate Arm Installation .
3. To verify appropriate arm length, manually push the gate to the
full open and close positions. Maximum security is obtained
when the elbow on the linkage arms is slightly bent with the gate
closed and at an approximate 90° angle with the gate in the open
position. See Figure 1-11. Refer to NOTE on page 1-11.
4. During the open and close process:
• Verify all pivot joints rotate smoothly without binding. At
the full open position, linkage arms must not scissor or
bind.
• Make sure the longer arm (B) does not collide with the top
cap cover.
• See Figure 1-10 and make adjustments to arm lengths by:
• loosening the set screws
• telescoping the arms
• retightening the set screws
Note: The elbow pivot bolt must be parallel with the vertical axis of the operator. If the pivot
bolt is not vertical, binding of the arm assembly may occur during operation.
Elbow
Pivot bolt must run
parallel with the vertical
axis of the operator.
Tapped hole used for
linkage arm adjustments.
Set screw
Use the set screw to fine-
tune the vertical orientation
of the pivot bolt and prevent
the arm from locking.
Over-extension stop
Figure 1-11.
CORRECT
alignment with
gate in the open
position.
INCORRECT
alignment.
Linkage arm (B)
needs to be
shortened.
B
A
B + 3"
B + 7.6cm