Installation and Operations Manual
— Model 730 Series
TROUBLESHOOTING
11
B&B ARMR
A Division of B&B Roadway and Security Solutions
0730-9001 Revision C2
Symptom
Actions
HPU pump will not turn
on
1.
Check power
2.
Check motor overload, press start.
3.
Check motor starter.
4.
Check low level switch.
5.
Check pressure switch.
Barrier makes noise
during operation
1.
Check linkage between beam and frame. Be sure it is
secure and properly lubricated (dry graphite spray).
2.
Check hinge area for debris and proper lubrication (dry
graphite spray).
3.
Check hydraulic cylinder clevis pins for lubrication
(multi-grade grease).
4.
Check bearing grease.
Hydraulic unit excessively
hot
1.
Check that the pressure relief valve is closed (fully
clockwise).
2.
Check that the limit switch is adjusted correctly and not
allowing the HPU to run excessively.
3.
Check for correct voltages.
Barrier moves too slowly
1.
Check for mechanical binds.
2.
Check flow control valve.
3.
In extreme cold temperatures, a higher grade hydraulic
fluid may be required to keep viscosity constant.
Traffic indicator light
does not change
1.
Check proper limit switch operation.
2.
Check bulbs.
3.
Check PLC outputs.