User's Manual
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normally when the Barrier opens or closes.
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Check whether the transmission part is loose and therefore affecting the running of the Barrier.
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Check whether there is any abnormal noise during the operation of the motor. If so, contact
after-sales service.
4.3.3 Maintaining the Angle Sensor
The angle sensor is connected to the main shaft to detect the real-time position and speed of the
barrier arm when it is running. Check the angle sensor when the Barrier jitters obviously.
Step 1
Cut off power supply to the Barrier, and remove the three leads of the angle sensor
(labeled 4, 5, 6).
Step 2
Use a multimeter (20 KΩ resistance), and connect the red and black test leads to 4, 5
respectively.
Step 3
Manually make the barrier arm move slowly from the opening status to the closed status.
Step 4
The resistance reading should change between 5 KΩ ± 2% and 7.4 KΩ ± 2%, and the
reading becomes smaller when the arm is raised and larger when the arm falls. In the
changing process of resistance, there is no jumping phenomenon. If anything is abnormal,
adjust the angle sensor to make the resistance fall within the specified range.
4.3.4 Adjusting the Balance Spring
When changing the barrier arm, you need to adjust the balance spring to fit the new barrier arm.
When the barrier arm is at an angle of about 5° from the horizontal line, release the barrier arm, and
the arm will slowly rise to the vertical position.
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The balance spring is adjusted according to the model of the Barrier. Do not change the model or
length of the arm without professional instructions.
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The length of the balance spring might differ depending on the model.
Figure 4-1 Adjust balance spring