Chamberlain 3800E User Manual
®
GARAGE DOOR OPENER
Model 3800E
Model 3800E
For Residential Sectional Doors With
Torsion Assemblies Only
Torsion Assemblies Only
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Owner’s Manual
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Please read this manual and the enclosed safety materials carefully!
■
Fasten the manual near the garage door after installation.
■
The door WILL NOT CLOSE unless The Protector System
®
and cable tension monitor are
connected and properly aligned.
■
Periodic checks of the opener are required to ensure safe operation.
■
The model number label is located behind the hinged door of your opener.