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ASTTBC RFPT — Fire Alarm Systems (AL) · Question

During a verification, how is an ancillary function relay (e.g., for fan shutdown) tested?

Ancillary functions (like fan shutdown) must be verified to ensure the relays operate as intended by the design sequence.

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Question: During a verification, how is an ancillary function relay (e.g., for fan shutdown) tested?

Answer options:

  • Bypassing the relays to save time
  • Visual inspection of the fan motor only
  • Measuring the voltage at the fan terminal only ✅ Verifying the actual operation of the ancillary function (e.g., fan stops)

Correct answer: Verifying the actual operation of the ancillary function (e.g., fan stops)

Explanation: Ancillary functions (like fan shutdown) must be verified to ensure the relays operate as intended by the design sequence.

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