Flex cannot make a sharp unsupported turn off a collar without choking. Use a smoother path, hard elbow/boot where needed, and support the flex so the core stays open.
The flex off this plenum collar is kinked tight around [obstacle]. I checked the core and support. Do you want a hard elbow/boot added or the flex rerouted for a smoother bend?
Watch out
Do not pull flex tight around an obstacle and leave the core flattened at the collar.
Check
Look at the flex core shape, not just the outer jacket.
Check if a light, grid, pipe, or wire is forcing the bend too tight.
Verify the start collar is secure and not tearing the plenum.
Use rigid elbow/boot or supported sweeping bend if approved.
Recheck airflow/noise after the kink is removed.
Steps
Look at the flex core shape, not just the outer jacket.
Check if a light, grid, pipe, or wire is forcing the bend too tight.
Verify the start collar is secure and not tearing the plenum.
Use rigid elbow/boot or supported sweeping bend if approved.
Recheck airflow/noise after the kink is removed.
Say this to your foreman
The flex off this plenum collar is kinked tight around [obstacle]. I checked the core and support. Do you want a hard elbow/boot added or the flex rerouted for a smoother bend?