Controlled Products Systems Group SWINGSMART DC 20 - Manual (Page 34)

Gate Bracket and Linkage Arms
1-12 SwingSmart DC Installation and Reference Manual Revision E
Completing Gate Arm Installation
Figure 1-14.
1. To determine whether you should drill & bolt or weld the linkage arms, you should take into consideration
site planning and future impact to gate arm installation. Check whether fire bans exist at your site. Fire bans
do not permit outdoor welding.
2. Paint exposed areas to prevent rusting.
CAUTION
For sites where incident of gate strikes are high, HySecurity recommends setting the elbow with
a slight offset at the full close position. Use the supplied set screw to prevent the arm from lock-
ing. The intent of the offset is that, upon gate strike, the elbow will bend and the taper clamp
will slip, minimizing damage to the gearbox and operator. Be aware if the elbow is set straight
and a gate strike does occur, the full force of the impact will be transferred through the linkage
arms and into the gearbox causing possible damage to the gearbox and operator.
DRILL & BOLT: If you plan to use fasteners, drill holes through the linkage arms. Refer to Figure 1-14.
WELD: If you plan to weld the linkage arms, weld a 1/8-inch fillet around the tubing joint. Only weld at
sites where outdoor welding is permitted.
To weld the linkage arms:
Weld a 1/8-inch fillet
around the tubing joint.
To use fasteners: Drill holes with a 17/64-inch drill bit and connect
arms with 1/4 - 20 UNC fasteners.
1/8"
1/8
"
DRILL & BOLT (2x)
WELD
1A
1B
1A
1B