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How to change a Damper Actuator

Call us on 01634 729 690

Before You Begin
  • Isolate the AHU at the control panel isolator and confirm the panel is de-energised.
  • Obtain the correct replacement actuator and manufacturer’s data sheet.
  • Access the AHU asset tag and retrieve the relevant wiring diagram.
  • Ensure the replacement cable and terminations match the approved wiring arrangement.
Quick Overview
  • Isolate the AHU and obtain the correct replacement actuator.
  • Access the wiring diagram through the asset tag.
  • Remove the faulty actuator and fit the new unit to the spindle.
  • Wire, power up and confirm correct damper operation.
Keep This Guide On Hand

This guide demonstrates the safe replacement and wiring of a motorised damper actuator so the damper operates correctly within the AHU control strategy. It combines mechanical replacement with wiring verification and alarm confirmation.

Video guide | 8 minutes 07 Seconds | Booklet included

Download Guide

Written Guide Overview

This written summary mirrors the booklet and gives users a quick reference to the key steps show in the video.

1
 Isolate the AHU, obtain the correct replacement actuator, and review the terminal layout and AHU wiring diagram.
2
 Disconnect the faulty actuator wiring, remove the unit from the spindle and inspect the spindle and linkage.
3
 Install and secure the replacement actuator, prepare the control cable, and terminate the wiring correctly in the junction box.
4
 Restore power, confirm smooth damper movement, and check that the Damper Fail alarm is no longer present on the HMI.
What this guide covers
  • Safe isolation before electrical work.
  • Checking the actuator specification and terminal layout.
  • Accessing the AHU wiring diagram via the asset tag.
  • Removing the faulty actuator from the spindle.
  • Preparing and terminating the new actuator cable.
  • Verifying damper movement and alarm clearance.

Need further assitance?

If the portal does not load, re-check the internet connection, QR scan and 18-digit reference number. If access still fails, contact ECE support and quote the unit’s reference number. You can reach our team on 01634 729 690 or sales@eceuk.com.

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