Elevator is most afraid of water, umbrella dripping will cause elevator short circuit. Experts say that in fact, elevators also have shortcomings. If the elevator is regarded as a person, then he is most afraid of water. Once the water in the elevator enters the circuit, it is easy to cause a short circuit in the elevator control system. If the elevator suddenly short-circuits during operation, people will be trapped inside. Therefore, when people take the elevator, it is best to pack their umbrellas in plastic bags when it rains, so as not to let water drop into the elevator. If there is an accident when transporting drinks or bottled water and the water falls into the elevator car, it is necessary to inform the property management in time and ask the elevator maintenance personnel to check. It's actually safer to be trapped in the elevator. Some people will also be trapped in the elevator: when the elevator encounters sudden power failure or other unexpected situations, the protection device may be started to temporarily stop the elevator. Experts say that the safest place for trapped people is the elevator car. At this time, you should calmly call for help and try your best to let the outside world know that you are trapped and waiting for help. The most dangerous action at this time is to open the elevator door by yourself. Once the elevator door is opened by itself, it is likely to fall into the well or get stuck, which is life-threatening. If you are sleepy for a long time, don't you want to suffocate due to lack of oxygen? Experts say that in fact, there are many air circulation points in the elevator car, and even if people stay in it for a long time, they will never suffocate due to lack of oxygen. If a citizen trapped in an elevator feels bored, a big factor is nervousness. The elevator will fall freely? If the elevator breaks down and falls from dozens of floors to the ground floor at once, it is almost impossible for that person not to be killed? In response to this public panic, experts explained that it is almost impossible for the elevator to fall freely and fall from a height to the ground. This is because the elevators produced by regular manufacturers will set up three levels to prevent the elevators that suddenly overspeed from falling. The first floor is the electrical switch of the elevator. Once the running speed of the elevator exceeds 15% of the normal speed, the electric switch will automatically stop the elevator temporarily. If the elevator continues to descend, the speed exceeds the normal speed.