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1. Slide the linkage tubes on the appropriate stub
arms and use the tapped holes for adjustment
purposes. Tighten the hex-head bolts to hold
the arms in place. Refer to Figure 10.
2. Verify the A and B dimensions on the arm
linkage tubes. For short gate applications,
the linkage arms must be cut to achieve the
required lengths. See Figure 8. If your operator
position does not fit the chart specs, use the
Custom Gate Installation formula to determine
the proper length.
Table 4. Operator Placement & Gate Arm
Geometry for 100° through 130° opening
X
Y
20"
24"
100°
(51cm)
(61cm)
26"
24"
110°
(66cm)
(61cm)
32"
20"
120°
(81cm)
(51cm)
38"
18"
130°
(97cm)
(46cm)
NOTE: Maximum A = 38" (97cm)
NOTE: Maximum B = 47.5" (121cm)
NOTICE
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" on page 35.
32
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Xg
A
36"
24"
36"
(91cm)
(61cm)
(91cm)
39"
28"
40.5"
(99cm)
(71cm)
(103cm)
41"
31.5"
44"
(104cm)
(80cm)
(112cm)
44"
36"
47.5"
(112cm)
(91cm)
(121cm)
SWINGSMART DC PROGRAMMING AND OPERATIONS MANUAL
3. To verify appropriate arm length, manually push
the gate to the full open and close positions.
Maximum torque is accomplished in the open
position when the B-arm is approximately 90°
with the gate. See Figure 9.
CORRECT
alignment with
gate in the open
position.
B
INCORRECT
alignment.
Linkage arm (B)
needs to be
shortened.
Figure 9. Correct and Incorrect Linkage Arms
INSTALLATION
B + 3"
B + 7.6 cm
A
B
MX3640-01 REV. D ©2018
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