Installing elevators in old buildings: What symptoms will appear when the old elevator is scrapped?

If the elevator is very old, it needs to be scrapped and renovated. Then there will be some symptoms when the elevator is old. Many people think that the elevator should be replaced after a long time. In fact, it is not the case. We still need to look at the use of the elevator and some parts. Let's take a look at what symptoms will appear when the old elevator is scrapped?

1. Use status

Whether the elevator needs to be repaired or replaced does not depend on the age, but on the use of the parts of the elevator. At present, the country does not have a mandatory scrapping standard for old elevators, but conducts risk assessment on old passenger elevators in use. "Through the assessment of risk sources, the assessment results are divided into general maintenance, renovation and scrapping and replacement. For elevators with great risks and no renovation value, they need to be scrapped and replaced.

2. Look at the parts

The elevator is like a computer mainframe, an 'assembly'." In the new national standard, whether the elevator is scrapped is based on its "assembly parts". The technical conditions for scrapping these parts are also specified in detail in the standard, including mechanical damage to parts, abnormal wear, rust, material aging, electrical failure, damage to electrical components and other 6 failure or potential failure modes that affect safe operation. "If the problem of elevator parts is serious according to these technical conditions, the whole machine can be considered scrapped.

3. Renovation issues

Generally, the renovation of old elevators can be put on the agenda after more than 10 years. Overhaul generally treats the symptoms but not the root cause. It is to update and repair the original elevator and replace new parts without changing the specifications and functions of the original elevator. Renovation is to upgrade the functions on the basis of the original elevator, such as adding floor stations, adding functions, changing specifications, changing systems, etc., that is, the elevator with the new specifications after renovation needs to be re-inspected and the elevator certificate is obtained. Overhaul refers to the replacement of the main engine, or wire rope, etc. Overhaul cannot change the brand of the original elevator, while renovation can change the brand of the original elevator.