How do I troubleshoot a fire damper that won't drop during a drop test?

Inspect the external damper sleeve and interior blade channel tracks for any accidental tek screw penetrations driven in too deep by the installation crew. Check for any thick accumulations of hardened mastic sealant or drywall dust packing inside the track groove rails. Clean out the track using a wire brush, spray it lightly with an approved dry-lubricant (never wet grease that catches dust), and replace any twisted or deformed link hardware components.

['Inspect the external damper sleeve and interior blade channel tracks for any accidental tek screw penetrations driven in too deep by the installation crew. Check for any thick accumulations of hardened mastic sealant or drywall dust packing inside the track groove rails. Clean out the track using a wire brush, spray it lightly with an approved dry-lubricant (never wet grease that catches dust), and replace any twisted or deformed link hardware components.']

Stop if

• Use this as training guidance. The foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, and AHJ/code requirements always control the final answer.

Check

• Inspect the external damper sleeve and interior blade channel tracks for any accidental tek screw penetrations driven in too deep by the installation crew. Check for any thick accumulations of hardened mastic sealant or drywall dust packing inside the track

Steps

• Stop and verify the approved detail, manufacturer instructions, foreman direction, and project specs before touching it.
• Inspect the external damper sleeve and interior blade channel tracks for any accidental tek screw penetrations driven in too deep by the installation crew. Check for any thick...

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