TinnerFlow™2nd YearGREEN · Standard CorrectionDamper Handle on Sloped Run
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.
A manual damper mounted on an angled travel piece can let the handle drift if the quadrant hardware is loose or the faceplate is oily. Vibration can slowly walk the blade away from the balancer’s setting.
Clean the quadrant, reset the blade to the marked position, tighten the lock hardware, and add approved locking hardware if needed. Mark the final setpoint so future drift is obvious.
Do not leave a loose damper handle on a sloped run where gravity can walk it closed.
A slipping damper can starve a zone and make the air balance look like an equipment problem.
Final direction belongs to the foreman, approved drawings/specs, manufacturer instructions, pressure/material schedule, employer policy, and AHJ/code requirements.