Elevator Failure Mainly In The Following Aspects

1. Electrical safety device failure;

2. Braking torque is insufficient;

3. insufficient traction;

4. Speed limiter failure;

5. Safety gear failure.

In addition, do not comply with the elevator rated load (occupants) serious overload down, or the load on the estimated deviation of the larger overload and so on may lead to the occurrence of the elevator squatting.