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Installation and Operations Manual — Model 400 Series
Symptom
HPU pump will not turn on
Gate makes noise during operation
Hydraulic unit is excessively hot
Gate moves too slowly
Traffic indicator light does not change
Locking pins are moving but not giving
signals up or down to I3
B&B ARMR
A Division of B&B Roadway and Security Solutions
TROUBLESHOOTING
Actions
1. Check power
2. Check motor overload, press start
3. Check motor starter
4. Check low level switch
5. Check pressure switch
1. Check that roller wheel bearings are
greased
2. Check that gate is not moving too fast
3. Check that the guide wheels are properly
adjusted
4. Check that the spur gear is properly
adjusted to the gear rack
1. Check that the pressure relief valve is
closed (fully clockwise)
2. Check that the pressure switch is adjusted
to shut the motor off before 1850psi
3. Check for correct voltages
1. Check for mechanical binds (guide wheels
out of adjustment, debris under the wheels
or on the inside of gate
2. Check flow control valve
1. Check proper limit switch operation
2. Check bulbs
3. Check PLC outputs
1. Check the proximity switches at the
locking pin mechanism
22
04X0 Rev G
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