LiftMaster DDO8900W Owners Manual - Page 1

Light-Duty Dock Door Operator for Sectional Doors Model DDO8900W For Light Duty Commercial Use Install On High-Lift and Vertical Sectional Doors With Torsion Assemblies Only NOT FOR RESIDENTIAL USE After Installation, Please Leave with Customer This product is to be installed and serviced by a trained door systems technician only. This product may require adjustments to door springs and/or track configurations. This product is not intended for use on low headroom tracks with outside pickup drum or doors utilizing extension springs. • Please read this manual and the enclosed safety materials carefully! • The door WILL NOT CLOSE unless the Protector System® and cable tension monitor are connected and properly aligned. • Periodic checks of the operator are required to ensure safe operation. • The model number is located on the front cover of the operator. • DO NOT exceed 10 complete cycles of door operation per hour. Register your door operator to receive updates and offers from LiftMaster SM Take a photo of the camera icon including the points ( ). Send it in by texting the photo to 71403 (US) or visit www.liftmaster.photo (Global) 2 YEAR WARRANTY LiftMaster 300 Windsor Drive Oak Brook, IL 60523