The broken traction rope of the elevator main engine is a serious fault, which needs to be repaired in time to ensure the safe operation of the elevator. There are several reasons why the original manufacturer of the elevator is needed to replace the traction rope:

1. The traction rope of the elevator is one of the core safety components of the elevator, which is directly related to the operation safety of the elevator. Only the original elevator manufacturer has professional technical knowledge and experience in the selection, installation, detection and maintenance of the traction rope, which can ensure the quality and reliability of the traction rope.

2. The parameters such as the material, size and strength of the traction rope need to match the design and requirements of the elevator main engine to ensure the safe operation of the elevator. Only the original elevator manufacturer has the relevant technical standards and specifications, and can provide the traction rope that meets the requirements for replacement.

3. The replacement of the traction rope is a complicated project, which requires the disassembly and installation of the elevator main engine. The original elevator manufacturer has a full understanding and familiarity with the elevator main engine, which can ensure that no other faults or damages occur during the replacement process.

4. according to the requirements of relevant laws and standards, the replacement of main elevator components should be carried out by the original elevator manufacturer or a maintenance unit with corresponding qualifications to ensure the quality and reliability of replacement.

therefore, in order to ensure the safe operation of the elevator and meet the requirements of relevant laws and standards, it is generally necessary to replace the traction rope of the elevator main engine by the original elevator manufacturer or a maintenance unit with corresponding qualifications.