Chamberlain ‎C450 C450 Smart Garage Door Opener

User Manual - Page 34

For C450.

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34
Operation
Using your Garage Door Opener
l The garage door opener can be activated with a wall-mounted door control, remote control,
wirelesskeylessentry, MyQ
®
Smartphone Control app or MyQ
®
Garage Door Monitor. When
the door is closed and the garage door opener is activated the door will open. If the door
senses an obstruction or is interrupted while opening the door will stop. When the door is in
any position other than closed and the garage door opener is activated the door will close. If
the garage door opener sensesan obstruction while closing, the door will reverse.If the
obstruction interruptsthe sensor beam the garage door opener lightswill blink 10 times. If the
door is fully open,and the safety reversing sensors are not installed, or are misaligned, the
door will not close from a remote control, TTC,or the MyQ
®
Smartphone Control app.
However, you can close the door by holding the button on the door control or the ENTER
button on the keyless entryuntil the door is fully closed.
l The garage door opener light bulbs will turn on when the opener is initially plugged in; power
is restored after interruption, or when the garage door opener is activated. The lightswill turn
offautomatically after 4-1/2 minutes. The lights will turn on when someone enters through the
open garage door and the safetyreversing sensor infrared beam is obstructed, see page 35.
Use an incandescent A19 lightbulb (100 watt maximum) or for maximum energy efficiencya
26W (100W equivalent) compact fluorescent light (CFL) bulb. NOTE: Do not use halogen,
short neck, or specialty light bulbs as these may overheat the end panel or light socket. Do not
use LED bulbs as they may reduce the range or performance of your remote controls.
To Open the Door Manually
To prevent possible SERIOUS INJURY or DEATHfrom a falling garage door:
l If possible, use emergencyrelease handle to disengage trolley ONLY when garage door is
CLOSED. Weak or broken springs or unbalanced door could resultin an open door falling
rapidly and/or unexpectedly.
l NEVER use emergencyrelease handle unlessgarage doorway is clear of persons and
obstructions.
l NEVER use handle to pull door open or closed.If rope knot becomesuntied, you could fall.
DISCONNECT THE TROLLEY
1. The door should be fully closed if possible.
2. Pull down on the emergencyrelease handle so the trolley release arm snaps to the vertical
position. The door can now be raised and lowered as often as necessary.
TO RE-CONNECT THE TROLLEY
1. Pull the emergencyrelease handle toward the garage door opener so the trolley release arm
snaps to the horizontal position. The trolley will reconnecton the nextUP or DOWNoperation,
either manually or by using the door control or remote control.
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