Apprentice answer

How do I ensure all VAV damper blades are in the open position before system blow-down

4th YearDampers, Fire/Smoke & Life SafetyStop / Verify

Coordinate with the temperature controls technician to command all digital VAV box actuator motors to drive into their 100% full open position overrides via their central software control board. * If the controls aren't powered on yet, you must manually decouple the actuator shaft set-screws and rotate the damper blades by hand to full open before starting the primary fans.

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Plain-English answer

Field checklist

Stop and verify the approved detail, manufacturer instructions, foreman direction, and project specs before touching it.
Coordinate with the temperature controls technician to command all digital VAV box actuator motors to drive into their 100% full open position overrides via their central software...

Ask Foreman

Hey boss, I’m on tab / startup prep and need verification before I touch this: How do I ensure all VAV damper blades are in the open position before system blow-down? Do you want me to stop here and check the approved detail, submittal, or inspector/manufacturer requirement first?

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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