What methods are used to simulate failure during the testing of safeties and buffers?

Simulating failure during the testing of safeties and buffers is essential for ensuring the reliability and effectiveness of these critical components in elevators. Bypassing or jumping out circuits allows technicians to create a specific condition under which a safety or buffer might operate in an undesired or failure state.

This method involves deliberately bypassing certain circuits to observe how the safety devices or buffers respond without their normal operational conditions, thereby allowing for a comprehensive assessment of their functionality under duress. It provides insight into how well these components can handle scenarios they are designed to protect against, helping to identify any weaknesses or points of failure.

Other methods listed, such as rewiring or shutting down circuits, might disrupt normal operation but do not effectively simulate a failure scenario that replicates real-world conditions. Monitoring or adjusting circuits focus on observing rather than testing the failure response, while isolating or disconnecting circuits may stop operation but does not emulate the real failure conditions that need to be tested. Hence, bypassing circuits directly simulates the conditions that may lead to a failure, making it the most suitable method for this purpose.