【Document】Emergency Rescue Method for Unexpected Safety Gear Activation

Scope of Application: Vertical elevators equipped with safety gears, incidents of passengers trapped due to unexpected safety gear activation.

Notes:

A This appendix is for reference only; all units should develop corresponding emergency rescue methods based on actual conditions;

B Members of the emergency rescue team should hold the "Special Equipment Operator Certificate" issued by the competent authority for special equipment;

C At least 2 rescue personnel are required;

D Emergency rescue equipment and tools: landing door unlocking key for emergency opening, hand wheel or re-leveling device, brake release wrench, common hardware tools, lighting equipment, communication equipment, internal emergency organization contact list, safety protective gear, hand grinder/cutting equipment, crowbar, warning signs, etc.;

E Ensure personal safety while carrying out the rescue.

0. General Principles

0.1 First, disconnect the main switch of the elevator to prevent accidents caused by sudden power restoration during the rescue process.

0.2 Maintain communication with trapped passengers through the elevator emergency alarm device or other communication means, and reassure them. The following reassurance language may be used: "Dear passengers, hello! We apologize that the elevator has temporarily malfunctioned. Please remain calm and wait inside the car for rescue. Professional rescue personnel have begun their work. Please follow our instructions. Thank you for your cooperation."

0.3 If it is confirmed that a passenger is injured or there is a possibility of injury, immediately notify the 120 emergency center so that appropriate actions can be taken.

1. Rescue Operation Procedure

1.1 Inform the trapped passengers inside the elevator car that rescue operations have begun, and instruct them to cooperate with the rescue activities, not to pry open the doors, and not to attempt to leave the car;

1.2 Cut off the main power supply of the elevator in the machine room, check whether the steel wire ropes and traction sheave are normal, and meet the requirements for manual re-leveling operation;

1.3 Confirm the positions of the elevator car and counterweight, and select the landing floor where the elevator is to be stopped;

1.4 Rescue Plan 1:

1.4.1 Rescue personnel reach the top of the elevator car;

1.4.2 Set the inspection switch on the car top to the inspection position, placing the elevator under inspection control;

1.4.3 Restore the main power supply of the elevator, reset the safety switches on the overspeed governor and safety gear, restore the safety circuit to normal, and ensure the landing door lock safety circuit is normal;

1.4.4 Rescue personnel on the car top may release the safety gear through the following operations:

a. If the safety gear is activated during downward travel of the car, operate the elevator upward in jog mode to release the safety gear;

b. If the safety gear is activated during upward travel of the car, operate the elevator downward in jog mode to release the safety gear;

c. If the counterweight overspeed safety gear is activated, operate the elevator car downward in jog mode to release the counterweight safety gear;

1.4.5 Once the safety gear wedges are disengaged from the guide rails, the rescue personnel on the car top operate the elevator in jog mode to bring the elevator to a stop at the selected landing floor. After confirming leveling, notify other rescue personnel to cut off the main power supply of the elevator in the machine room;

1.4.6 After confirming that the elevator car is leveled, rescue personnel on the car top manually operate the door opening mechanism to open the landing door/car door and rescue the trapped passengers;

1.4.7 If Rescue Plan 1 cannot complete the rescue, Rescue Plan 2 may be selected to continue the rescue operation.

1.5 Rescue Plan 2:

Emergency operation may be adopted to level the elevator car, then open the landing door/car door to complete the rescue. Depending on the type of faulty elevator, the following methods may be referenced for rescue operations:

1.5.1 Traction elevator with machine room

1.5.2 Machine-room-less elevator

1.5.3 Hydraulic elevator

1.6 Request for Support:

When the above rescue methods cannot complete the rescue operation, the leader of the emergency rescue team shall report to the unit's emergency command center and request support.

2. Fill in the "Emergency Rescue Record" and archive it.