INSTALLATION
MANUAL
MODEL 773 SERIES
REINFORCED CRASH ARM
B&B ARMR: A Division of B&B Roadway and Security Solutions
Page 9 of 38
0773-9001 Rev D
B&B ARMR reserves the right to change any information concerning product or specification without notice or obligation.
2.2.
Arm
The arm is an aluminum extrusion and is marked with red and white safety tape (alternate
colors available). The energy absorption material is contained inside the arm and
anchored with retention pins at either end. The impact energy is absorbed by the internal
material and transferred to the foundation through the drive and receiver stanchion
assemblies.
Figure 2 – Arm Assembly
2.3.
Stanchion
The drive and receiver stanchions are constructed using heavy gauge steel.
The drive stanchion
Figure 3 - Drive Stanchion (Model 773HD Shown)
with internal bearings on a steel hinge pin that allows the arm to open vertically.
The receiver stanchion
arm when it is lowered. The receiver stanchion has a removable security latching
device to prevent unauthorized operation when the barrier is unattended.
Do not attempt to operate the barrier when the latch device is installed.
Carriage
Receiver Side
Retention Pin
Pivot Point
Reflective
Safety
Tape
