A manual damper handle on a sloped 45-degree run keeps slipping closed
Gravity and vibration can walk a loose damper quadrant on a sloped run. Reset the blade, tighten/lock the quadrant hardware, and mark the final position.
Do not leave a loose damper handle on a sloped run where gravity can walk it closed.
Check
Verify the damper blade actually moved, not just the handle.
Check the quadrant nut, washer, and faceplate condition.
Reset to the balancer/foreman requested position.
Lock the handle so vibration cannot walk it.
Mark the final blade position for punch/TAB review.
Steps
Verify the damper blade actually moved, not just the handle.
Check the quadrant nut, washer, and faceplate condition.
Reset to the balancer/foreman requested position.
Lock the handle so vibration cannot walk it.
Mark the final blade position for punch/TAB review.
Say this to your foreman
The manual damper on this sloped 45 run is walking closed from vibration. I reset the blade to [position]. Do you want me to lock and mark the quadrant for TAB?