How to repair the villa elevator line

Update:01-06-2021
Summary:

Maintenance method and fault inspection of villa elevat […]

Maintenance method and fault inspection of villa elevator line.Common marine elevator faults of electrical control system.From the perspective of elevator electrical faults, the most common faults are door system faults and poor contact of electrical components. The main reasons for the failure of door systems and electrical components are component quality, installation and commissioning quality, and maintenance quality.Judging from the nature of electrical faults, it is mainly short-circuit and open-circuit.The short circuit is due to some reason, the circuit connection should not be disconnected or the resistance in the circuit after disconnection is very small.

 

Common short-circuit faults in elevators include mechanical and electronic interlock faults of directional contactors or relays, which may cause short circuits caused by contactors or relays; when the main contact of the contactor is opened or closed, the arc will be Cause surrounding dielectric equipment. The dielectric of the component is broken down and short-circuited; the insulating layer of the electrical component is aging and damp and short-circuited; the dielectric breakdown of the electrical component caused by the intrusion of external factors and external materials will cause the short-circuit. The open circuit is caused by some reason, and the circuit should be connected. The main reason for the open circuit is that the lead-in wires of the electrical components are loose. Solder points or contact faults are used as connection points in the circuit; the contacts of the relay or contactor are burned by the arc; the contact surface is covered by an oxide layer. The connected reed is connected to the current.

 

The arc generated when it is switched on or off is heated, and the elasticity disappears after cooling, and the contact pressure is insufficient. When the relay or contactor is pulled or disconnected, the contact point of the contact will deteriorate due to jitter. The contact surface is covered by an oxide layer. The connected reed is connected to the current. The arc generated when it is switched on or off is heated, and the elasticity disappears after cooling, and the contact pressure is insufficient. When the relay or contactor is pulled or disconnected, the contact point of the contact will deteriorate due to jitter. The contact surface is covered by an oxide layer. The connected reed is connected to the current. The arc generated when it is switched on or off is heated, and the elasticity disappears after cooling, and the contact pressure is insufficient.

 

When the relay or contactor is pulled or disconnected, the contact point of the contact will deteriorate due to jitter.Secondly, the judgment and elimination of electrical control system faults are based on elevator control principles. Therefore, to quickly troubleshoot, you must master the circuit diagram of the area control system, and clarify the working principle of the entire elevator process from the aspects of starting, accelerating, running at full speed, and reaching prediction. The mutual control relationship between each electrical component, such as speed change, liquid level, door opening and closing, each electrical component, relay contactor and its contact function. Before judging the elevator electrical control failure, it is necessary to thoroughly understand the failure phenomenon, in order to quickly and accurately analyze the cause of the failure, and find the failure point according to the failure phenomenon of the circuit diagram.

0