Wednesday, 11 December 2019 02:53

Automatic door fault diagnosis and repair

When using the automatic door, the user will inevitably encounter the problem that the automatic door is faulty. Once the automatic sensor door goes wrong, the user's first thought is to find the relevant automatic door repair company, which is not completely wrong. After all, normal users can't repair it themselves. But it must be a professional automatic door maintenance personnel to do inspection and maintenance. Even simple automatic door repairs require a certain cost. If the users know what is wrong with the parts, they can avoid some unnecessary costs.

Let me teach you some basic troubleshooting now.

Before analyzing and diagnosing the cause of the failure of the automatic sensing door, the users must understand the basic structure and operating principle of the automatic door unit.  The main components of the automatic door unit are mainly four parts: drive motor, controller, transformer (power supply), pulley hanger. The driving motor is a power structure that drives the door body to move back and forth; the controller is the brain part of the automatic door, and controls various functions and motion modes; the transformer is simply a power that accepts voltage range of 100-240V; the pulley hanger drives the door body to move back and forth on the rail.

The operation principle of the automatic door is generally simple: the transformer supplies power to the drive motor, the motor drives the pulley hanger with the belt, and the controller accepts the command to control the operation mode (opening and closing).

After understanding the basic structure and principle of the automatic sensing door,  we can make some simple fault diagnosis analysis:

  1. The automatic door is generally operated for a long time with power. If the automatic door has a running fault such as unable to sense movement or repeats the door opening and closing, the first thing is to immediately power off and restart the system. After a restart, you can see whether the automatic door still has the same fault problem.
  2. If the problem is not solved, then power off and try to manually pull the door. If the door can be manually pulled, the fault of the drive motor can be excluded.
  3. After excluding the drive motor failure factor, power on to see the state of the sensor. if the red light on the automatic door sensor is always on or no response is abnormal when people access, and the remote controller work normally, it can be basically diagnosed as a sensor failure. If the remote control does not work, it can basically be diagnosed as a controller failure problem.

To understand the four components and working principle of the automatic door, and gradually analyze and eliminate the state of the four major components, we can basically diagnose the fault of automatic door operators.

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