What are the symptoms when an old elevator is scrapped?

If the elevator is very old, it needs to be scrapped and remodeled. Then there will be some symptoms when the elevator is old. Many people think that the elevator should be replaced if it has been used for a long time. In fact, this is not the case. We still need to open the elevator and some parts. Let's take a look at the symptoms when the old elevator is scrapped.

1. Status of use

Whether the elevator needs to be repaired or replaced depends not on the time limit, but on the usage status of the various parts of the elevator. The country does not yet have a mandatory scrapping standard for old elevators, but a risk assessment of old passenger elevators in use. "The evaluation results are formed through the evaluation of risk sources, which are divided into general maintenance, renovation, and scrap replacement. For elevators that are very risky and do not have the value of renovation, they need to be scrapped and replaced.

2. Look at the parts

The elevator is an ‘assembly’ like the main computer box. "Chen Fengwang, Secretary-General of the National Standardization Technical Committee for Top Ten Elevator Brands, said. In the new national standard, whether the elevator is scrapped or not is based on its "assembly parts." The technical conditions for scrapping of these components in the standard are also specified in detail, including Mechanical damage, abnormal wear, corrosion, material aging, electrical failure, electrical component damage and other 6 failures or potential failure modes that affect safe operation. "If the elevator components are judged to be serious according to these technical conditions, the whole machine can be considered scrapped. .

3. Transformation issues

Generally more than 10 years can be put on the agenda of old ladder renovation. The overhaul generally treats the symptoms rather than the root cause. It is an update and maintenance on the basis of the original elevator and replacement of new parts without changing the specifications and functions of the original elevator. Reconstruction is a functional upgrade on the basis of the original elevator. After the renovation, the elevator is equal to the new specification and needs to be re-inspected and received an elevator certificate. Overhaul refers to the replacement of the main engine, or the steel wire rope. Overhaul cannot change the brand of the original elevator, but the renovation can change the brand of the original elevator.

Now the elevator needs to be scrapped after it has been used for a long time. If it is scrapped, it also needs to look at some symptoms, and many people don't know how to look at it. In fact, you can see whether the elevator needs to be scrapped or remodeled according to the usage of the elevator and the usage of the components.