Shanxi Electric retractable door using the process will inevitably fail, but generally most of them are nothing more than those cases, it is necessary to learn how to handle these common faults, here are two common faults of electric retractable door approach. 1, the microcomputer operating electric retractable door and local operations have no reaction, but did not lose power electric retractable door; for this failure should first check whether the heavy machinery, the limit switch is normal, remote, on-off switch is a good place inner door head off items protection switch is normal. If the green light is normal, red for the missing items, if the red and green are bright, it is off the term of protection failure. Red light, three electricity is not missing items, broken items belong protection device quality management issues. The solution is to break the term of protection that is normally-closed contacts shorted, resume normal operation. 2, switch electric retractable door can be operated, but the switching direction of the electric retractable door error, observation local operation, find the direction of the door sometimes right, sometimes wrong, I guess the reason the motor phase sequence. When replacing the phase sequence, the failure still have not discharged. Then check the electric retractable door motor resistance is balanced three straight, opening and closing stroke is correct, electric retractable door machinery is heavy; if electric retractable door motor is one less direct resistance, motor rotation belong to a free state, which direction it towards lighter Which direction is rotated, so that the direction of electric retractable door switch can not be fixed, the fault belongs to Gap actions, the motor missing items returned to normal, the failure to resolve. 

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