Electric retractable gate repair skills
Retractable gate
Electric retractable gate circuit control system mainly includes: operation key box, CPU as the core of the control board, remote control and some sensors constitute the detection control circuit. In the maintenance of the retractable gate commonly used methods can be summarized as: one question, two look, three, four touch, five test:
Ask: asked, in communication with customers, first asked the type, name, damage causes, failure phenomenon, and then according to detailed analysis, in order to do more than ease, the right medicine, less detours. The main contents of the inquiry include, but are not limited to, whether it is damaged, whether it is flooded, whether it is hit, whether the voltage is too high, whether it is altered, whether it is improperly operated, whether it is struck by lightning, whether there is smoke, and whether there is any abnormal sound. Only after clarifying the reasons, to determine the next step of the maintenance program and approach. For lightning, flooding, smoke, burning insurance and other fault machine, do not rush to power test machine, otherwise it will cause the machine again hit, failure to expand.
Second look: that is, observe, open the telescopic gate control shell, you should carefully check the circuit board is damaged components. Such as component fracture, black and yellow, pin collision, device loosening, connection errors and so on. Experienced maintenance personnel will be based on user-provided information and fault phenomena, accurate view of suspicious parts of the retractable gate, deftly find out where the fault. Some of the bad faults can be observed in the darker parts of the suspect if there is a spark to determine
Three listen: that listen, in the control system, most of the use of electromagnetic relay as a control device, the relay contacts will produce a clear "drop" sound. Such as silent or abnormal, in determining the relay drive electrical failure, you can determine the relay bad.
Four touch: that touch, in the retractable gate repair process, often after the power of hand touch (nose sniffing) some of the components. Such as the regulator IC and other integrated devices, lightning protection, transformers, drive diodes, etc., in order to feel the temperature is normal, such as fever fast, high temperature, no short circuit fault circuit can determine the device is bad (Note: for high voltage components Such as thyristor, high pressure area of the components, should be energized for a period of time and then quickly touch the power, do not touch when the power to avoid electric shock accident).
Five measurements: the measurement, refers to the use of universal table screwed to the appropriate gear, the control circuit for the relevant measurement. Usually used to measure the voltage, measured circuit resistance, measured current and so on. This is a comprehensive logic analysis means, according to a variety of measurement of electric retractable gate data to accurately identify the cause of failure and damage to the device.
