Canvas connector tears on startup

A torn flexible connector means the material, slack, pressure, weather exposure, vibration, or alignment is wrong. Shut down if needed and replace it with the approved connector material/detail.

['A flexible connector is there to absorb vibration and isolate movement, not to act like a stretched drumhead. If it tears on startup, check whether it was installed tight, misaligned, wrong material, wrong pressure/weather rating, or rubbing on metal.', 'The recovery is to verify the fan/equipment detail and replace the connector with the specified material, proper slack, clean clamping/fastening, and weather protection if outdoors. Do not patch a ripped connector and leave the root cause.']

Stop if

• Use this as training guidance. The foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, and AHJ/code requirements always control the final answer.

Check

• A failed flex connector can dump air, transmit vibration, let water/weather in, and shut down startup.

Steps

• Shut down or secure the system before working near fan discharge if required.
• Check connector material, rating, outdoor/UV exposure, pressure, temperature, and manufacturer/project requirement.
• Look for no slack, misalignment, sharp edges, rubbing, vibration, or fan movement.
• Inspect duct/plenum supports so the flex connector is not carrying duct weight.
• Replace/repair per approved detail and recheck on startup.

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