Emergency electric operation control: For elevator drive hosts that require a force greater than 400N to manually lift a car with a rated load capacity, an emergency electric operation switch that meets the requirements should be installed in the machine room. The elevator drive host should be powered by a normal power source or a backup power source (if available). At the same time, the following conditions should also be met:

1. Emergency electric operation switches should be allowed to be operated from the machine room, and the car operation should be controlled by continuously pressing buttons with anti misoperation protection. The direction of operation should be clearly indicated;

2. After the emergency electric operation switch is operated, all movements of the car should be prevented except for those controlled by the switch. Once the maintenance operation is implemented, the emergency electric operation should fail;

3. The emergency electric operation switch itself or through another compliant electrical switch should cause the following electrical devices to fail:

1) Electrical safety devices on safety clamps;

2) Electrical safety devices on speed limiters;

3) The electrical safety device on the up speed protection device of the elevator car;

4) Limit switch;

5) Electrical safety devices on the buffer.

4. The emergency electric operation switch and its control button should be located in a place where it is easy to directly observe the elevator drive host during use;

5. The speed of the elevator car should not exceed 0.63m/s.

Emergency measures for operation:

1. All operational commands are ordered by the team leader.

2. The deputy supervisor must keep a record of receiving orders and report to the team leader, who will then order the operation. In special circumstances, the secondary value can be ordered to operate according to the program, ensuring error free operation.

3. After each operation is ordered by the team leader, the operator must repeat and confirm the work location and specific equipment. Only after the operating program is correct can it be operated.

4. Operations involving close connection with the host shall be carried out by the secondary operator. Before operation, the equipment shall be checked and confirmed to be correct before operation.

5. No one is allowed to bypass the squad leader and independently command the operators to carry out electrical operations. Electrical operations should be temporarily carried out by personnel above the deputy shift level to avoid mistakes. It is necessary to first seek approval and confirm correctness before proceeding with the operation.

6. If the equipment is unclear, the location is unclear, the defects have not been eliminated, the boundaries are unclear, the operation is uncertain, or there are hidden dangers, first confirm whether it can be operated. After confirming that there are no errors, proceed with the operation.

7. When receiving orders, it is necessary to clarify who the other party is, whether they are the commanding personnel, and whether they have the right to command desulfurization, ash removal, and slag removal. Otherwise, they can refuse to operate.

8. Before taking over the shift, the team leader should conduct a thorough inspection of all equipment before entering the control room for shift handover. The team leader should be present in the control room and at the site of equipment start-up, shutdown, inspection, and abnormalities, rather than at the site of equipment maintenance.

9. When an accident occurs on site, if it involves the main engine, it should be immediately reported to the shift supervisor, and then reported to the operation specialist, project manager, and production department specialist. For general accidents, it should be reported to the operation specialist, and for those that require maintenance, it should be reported to the maintenance specialist for handling.