Installation and Operations Manual
— Model 890 Series
TROUBLESHOOTING
10
4 TROUBLESHOOTING
4.1 Model 730 Troubleshooting Guide
The table below provides guidance on identifying and correcting any problems with your
Model 730 Series vehicle barrier. Please refer to the HPU O&M manual for more
detailed troubleshooting guides referring to the pumping unit. If you encounter problems
that you cannot fix, contact B&B ARMR and we will gladly work with you to correct
them.
Symptom
Actions
Barrier does not raise up
when commanded on
control panel
1.
Check power
2.
Check for binding between beam and frame. Check
connection of linkage between beam and frame. Check
for foreign debris.
3.
Check pressure gauge(option not standard on all units)
4.
Check overload protector
5.
Manually raise the barrier by using the manual hand
crank to see if problem is mechanical or electrical.
6.
Check PLC input on pumping unit.
7.
Check that safeties are clear.
8.
Check PLC output on pumping unit
9.
Check push button operation
Barrier does not close
when commanded on
control panel
1.
Check power
2.
Check for binding between beam and frame. Check
connection of linkage between cylinder and beam. Check
for foreign debris.
3.
Check pressure gauge(option not standard on all units)
4.
Check overload protector
5.
Determine if it is electrical or mechanical by manually
lowering the barrier arm. Open the cartridge valve located
below the motor on the pump. Push in and turn the blue
knob counter clockwise. This will manually dump the
pressure in the lines and lower the barrier arm. When
finished, push in the blue knob and turn clockwise to
engage the cartridge valve to its normal state.
6.
Check PLC input on pumping unit.
7.
Check that safeties are clear.
8.
Check PLC output on pumping unit
9.
Check push button operation
HPU pump will not build
up pressure but is running
1.
Check power
2.
Close pressure relief valve
