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Apprentice Q&A · #173

What should I check mechanically before the start-up tech powers on the RTU?

4th YearTAB / Startup PrepRED · Stop / Verify

Verify that all internal construction shipping tie-down braces are completely cut out from the fan motor frames. * Check that the drive belt alignment between the pulleys is straight and has the correct tension. * Verify that the manual system balancing dampers are locked wide open, all building fire dampers are set open, clean air filters are installed, and the internal fan wheel turns freely by hand without scraping the casing.

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Plain-English answer

Verify that all internal construction shipping tie-down braces are completely cut out from the fan motor frames. * Check that the drive belt alignment between the pulleys is straight and has the correct tension. * Verify that the manual system balancing dampers are locked wide open, all building fire dampers are set open, clean air filters are installed, and the internal fan wheel turns freely by hand without scraping the casing.

Field checklist

Ask Foreman

Hey boss, I’m on tab / startup prep and need verification before I touch this: What should I check mechanically before the start-up tech powers on the RTU? Do you want me to stop here and check the approved detail, submittal, or inspector/manufacturer requirement first?

Open Ask Foreman

Verify before acting

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.

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Related Field Rescue routes

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Related mistakes & recovery checks

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