FSD Troubleshooting & Repair Flashcards
6 cards from real FSD practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 FSD Troubleshooting & Repair flashcards as text
What is the recommended corrective procedure when a smoke damper actuator fails?
Answer: Replace the actuator with an identical UL-listed unit and retest operation
A failed actuator must be replaced with an identical UL-listed replacement unit and the damper fully retested to confirm proper operation before the repair is accepted.
How should a technician address light surface corrosion found on fire damper blades that do not affect operation?
Answer: Document the corrosion, clean the affected area, and monitor at next inspection
Light corrosion that does not impair operation should be documented, cleaned, and flagged for monitoring at the next inspection cycle per NFPA 80 maintenance guidance.
After replacing a fusible link on a fire damper, what is the correct next step?
Answer: Manually cycle the damper to verify it closes fully and latches correctly
After replacing a fusible link, the technician must manually cycle the damper to confirm it closes fully and latches, verifying the repair restored proper function.
If a fire damper closes but leaves a visible gap and does not fully seal, which component is most likely defective?
Answer: A worn or missing blade seal or stop
A gap when the damper is closed typically indicates worn, damaged, or missing blade seals or blade stops that prevent the blades from forming a tight closure.
What is the proper test method to verify a smoke damper is operational after completing a repair?
Answer: Send an activation signal from the control panel and confirm full closure and position feedback
After repair, the smoke damper must be tested by sending an actual activation signal and confirming full closure with correct position feedback to the control system.
When troubleshooting an electrically-operated smoke damper that will not respond, what is the first diagnostic step?
Answer: Verify that control voltage is present at the actuator terminals
Confirming control voltage at the actuator terminals first establishes whether the problem is electrical supply or the actuator itself, directing all further troubleshooting.