Confirm escalator handrail speed monitoring and entry safety device requirements
domain: asme.org — A17.1 Part 6, Section 6.1 · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Confirm A17.1 Part 6, Section 6.1 governs escalator safety devices, including handrail-speed monitoring and handrail entry (newel) devices.
Confirm a handrail entry safety device is required at each newel and must stop the unit (via dynamic braking or power removal) if entry into the balustrade is obstructed.
Confirm handrail-to-step speed synchronization monitoring is required to stop the unit if the handrail speed deviates from step speed beyond a code-specified tolerance and duration — treat specific percentage/second values found in secondary sources as unconfirmed until checked against the adopted edition's primary text.
Confirm comb-plate safety switches are a distinct safety system from newel/handrail devices, designed to stop the unit when an object is trapped at the step/comb intersection.
Verify which specific device triggered a given stop event during troubleshooting, since multiple independent safety circuits can each halt the escalator for different reasons.
Known gotchas
Specific numeric tolerance/duration values for handrail-speed monitoring varied across the non-primary sources found this session — do not present a specific percentage or second count as confirmed without checking the adopted A17.1 edition directly.
Comb-plate devices and newel/handrail-entry devices are separate systems; do not conflate them when diagnosing a stoppage.
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