Do not tighten a ring hanger until the pipe becomes the clamp shape.
Check
Look for ovalized duct, dents, crushed insulation, or joint gaps.
Check whether the ring is bearing evenly.
Loosen hardware before the pipe is permanently deformed.
Use jam nuts/approved locking method after adjustment.
Verify centerline and slope after reset.
Steps
Look for ovalized duct, dents, crushed insulation, or joint gaps.
Check whether the ring is bearing evenly.
Loosen hardware before the pipe is permanently deformed.
Use jam nuts/approved locking method after adjustment.
Verify centerline and slope after reset.
Say this to your foreman
The split ring at [location] is squeezing the round duct out of shape. I checked the shell/insulation. Do you want it reset or the damaged section replaced?