What are the handling methods for automatic telescopic doors when they malfunction

In the past few days, some fans have left me messages one after another, asking the same question. So, when the automatic telescopic door we use malfunctions again, how should we operate it? So today, the editor is also well prepared. Using his spare time, he has organized some solutions for the malfunction of the telescopic door for everyone, which was also developed by our teacher Fu based on practical experience on site:

The basic methods commonly used in the design of retractable doors can be summarized as: asking, looking, listening, touching, and testing. Below, the editor will explain one by one for reference. It can be summarized into five points in total.

One question: That is to inquire. When communicating with customers, first inquire about the model, product name, cause of damage, and fault phenomenon, and then analyze them in detail based on this, in order to achieve targeted and targeted treatment, and avoid detours. The main inquiries include: when it was damaged, whether it was submerged, whether it was hit, whether the voltage was too high, whether it was modified, whether it was operated improperly, whether it was hit by lightning, whether there was smoke, whether there was abnormal noise, etc. Only after inquiring about the cause can the next maintenance method and handling measures be determined. For faulty models such as lightning strikes, water immersion, smoke, and fuse burning, do not rashly power on and test the machine, otherwise it will cause the machine to be damaged again and the fault will expand.

Second look: observe carefully whether there are any components damaged on the circuit board after opening the telescopic door control housing. Such as component breakage, black and yellow hair, pin collisions, loose components, incorrect wiring, etc. Experienced personnel will accurately inspect the suspicious parts of the telescopic door based on the relevant information and fault symptoms provided by the user, and quickly identify the fault location. Some poor contact faults can be determined by observing suspicious components in dim light for sparks (note: certain poor contact faults, especially sparks caused by poor contact at the fault point after power is applied).

Three listening: namely listening, in control systems, electromagnetic relays are mostly used as control devices, which produce a clear "clicking" sound when the relay contacts switch. If there is no sound or abnormality, it can be determined that the relay is faulty after confirming that there is no fault in the relay driving device.

Four touch: That is, touch. During the process of the telescopic door, it is also common to touch (sniff) certain components with your hands after power is applied. Integrated devices such as voltage stabilizing ICs, lightning protection tubes, transformers, drive diodes, etc. can be detected to see if their temperature is normal. If the heating is fast, the temperature is high, and there is no short circuit fault in the circuit, it can be determined that the device is faulty (note: for high voltage components such as thyristors and high-voltage area components, they should be powered on for a period of time and then quickly touched after power outage. Do not touch them when powered on to avoid electric shock accidents).

Five measurements: Refers to the use of a universal meter to rotate to a suitable gear and perform relevant measurements on the control circuit. The commonly used methods include voltage measurement, circuit resistance measurement, current measurement, etc. This is a comprehensive logical analysis method that can identify the cause of faults and damaged devices based on various measurement data preparation.