Since elevator is of metal structure, why should we keep it far from water?
In daily life, dirty water or other liquids may be dumped in the elevator car. When cleaning the corridor, some people will sweep the water into the elevator shaft because they think it just an empty well.
In fact, not only on the roof and bottom of elevator car but also on the bottom of landing door there are equipped with many mechanical and electrical components. when water or other liquid flow into these places, it will cause corrosion of the components, even make them cannot work orderly.
In addition, the elevator car and landing door are arranged many wires and circuit board. Water will cause poor performance of electrical insulation and even electric leakage. It may cause more serious damage to the elevator control system.