Chamberlain D2101 Installation Manual - English Spanish - Page 5

Preparation Check the Door To prevent possible SERIOUS INJURY or DEATH:  ALWAYS call a trained door systems technician if garage door binds, sticks, or is out of balance. An unbalanced garage door may NOT reverse when required.  NEVER try to loosen, move or adjust garage door, door springs, cables, pulleys, brackets or their hardware, ALL of which are under EXTREME tension.  Disable ALL locks and remove ALL ropes connected to garage door BEFORE installation and operating garage door opener to avoid entanglement.  DO NOT install on a one-piece door if using devices or features providing unattended close. Unattended devices and features are to be used ONLY with sectional doors. To prevent damage to garage door and opener:  ALWAYS disable locks BEFORE installing and operating the opener.  ONLY operate garage door opener at 120V, 60 Hz to avoid malfunction and damage. Before you begin: 1. Disable locks and remove any ropes connected to the garage door. 2. Lift the door half way up. Release the door. If balanced, it should stay in place, supported entirely by its springs. 3. Raise and lower the door to check for binding or sticking. If your door binds, sticks, or is out of balance, call a trained door systems technician. 4. Check the seal on the bottom of the door. Any gap between the floor and the bottom of the door must not exceed 1/4" (6 mm). Otherwise, the safety reversal system may not work properly. 5. The opener should be installed above the center of the door. If there is a torsion spring or center bearing plate in the way of the header bracket, it may be installed within 4 feet (1.2 m) to the left or right of the door center. See page 13. Before You Connect with Your Smartphone* Monitor and control your garage door from anywhere using the myQ® App. You will need a router with Wi-Fi® and a smartphone or other mobile device. Make sure your mobile device is connected to your Wi-Fi® network. Hold your mobile device in the place where your garage door opener will be installed and check the Wi-Fi® signal strength. Check Signal Strength. If you see: Wi-Fi signal is strong. You're all set! Install your new garage door opener. Wi-Fi signal is weak. The garage door opener will likely connect to your Wi-Fi network. If not, try one of the options below. No Wi-Fi signal. Try one of the following: • Move your router closer to the garage door opener to minimize interference from walls and other objects • Buy a Wi-Fi range extender Visit support.chamberlaingroup.com for more details. See myQ® App Control page 37 to connect your garage door opener to your Wi-Fi® network. *Smartphone control is not available on models C2102 and D2101. Torsion Spring Extension Spring 5