Turning vanes were assembled backwards in an elbow

Turning vanes steer air through a sharp elbow. If the vane profile is backward, the air hits the wrong side and creates turbulence instead of smoothing the turn.

Stop if

• Those turning vanes are backwards. The air is going to smash straight into the hollow back cups and choke the line. Flip the track around so the curved nose glides the air around the bend cleanly.

Watch out

• Do not screw vane tracks in just because they physically fit.

Check

• Confirm airflow direction before fastening vane rails.
• Look at the vane nose/profile and how it will meet incoming air.
• Dry-fit the track before screwing it down.
• Check both side rails match orientation.
• Ask before closing the elbow if airflow direction is unclear.

Steps

• Confirm airflow direction before fastening vane rails.
• Look at the vane nose/profile and how it will meet incoming air.
• Dry-fit the track before screwing it down.
• Check both side rails match orientation.
• Ask before closing the elbow if airflow direction is unclear.

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