China Elevator Lifts Factory Shares Knowledge On Handling Elevator Failures

China Elevator Lifts Factory Shares Knowledge On Handling Elevator Failures

A Book by huzhoufuji
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With the advancement of science and technology, the level of design, manufacture, installation, inspection, repair, maintenance and use of elevator technology and management has been continuously impr

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© 2020 huzhoufuji


Author's Note

huzhoufuji
With the advancement of science and technology, the level of design, manufacture, installation, inspection, repair, maintenance and use of elevator technology and management has been continuously improved, and the reliability of its operation has increased significantly. However, during maintenance, there are still some typical elevator failures. China Elevator Lifts Factory will share how to deal with the elevator shutdown caused by phase failure:

When the three-phase power supply fails, the phase sequence relay acts to cut off the safety circuit and stop the elevator. This kind of fault mostly occurs in elevators controlled by relay logic. Because it is an old-style elevator, the power switch is mostly a knife type. The power passes through the limit switch, and then is sent to the elevator control cabinet and the two switches through which the power flows. A total of six fuses. The elevator is running and starting, and the current is very large. After a period of operation, if the maintenance personnel do not check in time, the connection between the fuse and the screw is very easy to burn out, the elevator is out of phase, causing the elevator to stop.

Main preventive measures:
a. Maintenance personnel should conduct frequent patrol inspections, find suspicious places, repair them in time, and replace them immediately if they become hot or sparking.

b. It is recommended that the user replace the knife switch with an equivalent capacity air switch.

c. Currently designed elevators do not have power limit switches. The author believes that the safety circuit can be slightly modified, that is, the upper and lower limit electrical switches are installed in series in the safety circuit, and the original limit switch is removed.

After the b.c. process, this fault can be completely eliminated.

The above content is organized and shared by the China Passenger Elevator manufacturer, hoping to help those in need.


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Added on July 1, 2020
Last Updated on July 1, 2020
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huzhoufuji
huzhoufuji

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phone:15067268746 tel:+86-0572-3018159 fax: +86-0572-3569810 e-mail:[email protected] [email protected] Add:41-2 South Jiaye Road,Nanxun,Huzhou,Zhejiang,China. &.. more..

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