FSD FSD Troubleshooting & Repair

Question 1

What is the most common cause of fire damper failure during an inspection?

Accepted Answer

Corroded or seized blades preventing full closure

Answer

Oversized ductwork dimensions

Answer

Excessive airflow velocity

Answer

Improper thermostat calibration

Question 2

When a smoke damper fails to close upon activation signal, what should be checked first?

Accepted Answer

The actuator and its power supply connection

Answer

The ductwork insulation

Answer

The building's main circuit breaker

Answer

The HVAC filter condition

Question 3

A bent or damaged blade on a fire damper most commonly indicates what condition?

Accepted Answer

Previous improper access or mechanical impact during maintenance

Answer

Normal thermal expansion over time

Answer

Manufacturer defect in the blade alloy

Answer

Over-pressurization of the supply duct

Question 4

If a fusible link has activated but the damper still did not close, what is the most likely cause?

Accepted Answer

The damper blades are seized due to corrosion or debris

Answer

The fusible link was the wrong temperature rating

Answer

The duct was under negative pressure

Answer

The fire alarm panel was not notified

Question 5

What is the correct action when a damper is found stuck in the open position during inspection?

Accepted Answer

Tag it as deficient, notify the building owner, and initiate corrective work

Answer

Manually force it closed and document the repair

Answer

Leave it open until the next scheduled inspection cycle

Answer

Install a temporary bypass duct around the damper

Question 6

Which condition requires immediate replacement of a fire damper rather than repair?

Accepted Answer

Cracks or holes in the damper frame that compromise the fire-rated assembly

Answer

Minor surface rust on the exterior of the frame

Answer

A missing access door label

Answer

Slightly stiff blade operation that resets manually