Operation; Using Your Garage Door Opener - Chamberlain C2405C Istallation Manual

Operation

To reduce the risk of SEVERE INJURY or DEATH:
1. READ AND FOLLOW ALL WARNINGS AND INSTRUCTIONS.
2. ALWAYS keep remote controls out of reach of children. NEVER permit children to operate
or play with garage door control push buttons or remote controls.
3. ONLY activate garage door when it can be seen clearly, it is properly adjusted, and there
are no obstructions to door travel.
4. ALWAYS keep garage door in sight and away from people and objects until completely
closed. NO ONE SHOULD CROSS THE PATH OF THE MOVING DOOR.
5. NO ONE SHOULD GO UNDER A STOPPED, PARTIALLY OPENED DOOR.
6. If possible, use emergency release handle to disengage trolley ONLY when garage
door is CLOSED. Use caution when using this release with the door open. Weak or
broken springs or unbalanced door could result in an open door falling rapidly and/or
unexpectedly and increasing the risk of SEVERE INJURY or DEATH.
7. NEVER use emergency release handle unless garage doorway is clear of persons and
obstructions.
8. NEVER use handle to pull garage door open or closed. If rope knot becomes untied, you
could fall.

Using your Garage Door Opener

The garage door opener can be activated through a wall-mounted door control, remote control, wireless keyless
entry or myQ ® App.
When the door is closed and the garage door opener is activated the door will open. If the door makes contact
with an obstruction while opening, the door will stop, opener beeps and lights flash 5 times. 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
makes contact with an obstruction while closing, the door will reverse, opener beeps and lights flash 5 times.
However, you can close the door if you hold the button on the door control or keyless entry until the door is fully
closed.
The safety reversing sensors do not affect the opening cycle. The safety reversing sensor must be connected
and aligned correctly before the garage door opener will move in the down direction.
IMPORTANT SAFETY INSTRUCTIONS
9. After ANY adjustments are made, the safety reversal system MUST be tested.
10. Safety reversal system MUST be tested every month. Garage door MUST reverse on contact with
1-1/2" (3.8 cm) high object (or a 2x4 laid flat) on the floor. Failure to adjust the garage door opener
properly increases the risk of SEVERE INJURY or DEATH.
11. ALWAYS KEEP GARAGE DOOR PROPERLY BALANCED (see page 3). An improperly balanced
door may NOT reverse when required and could result in SEVERE INJURY or DEATH.
12. ALL repairs to cables, spring assemblies and other hardware, ALL of which are under EXTREME
tension, MUST be made by a trained door systems technician.
13. ALWAYS disconnect electric power to garage door opener BEFORE making ANY repairs or
removing covers.
14. This operator system is equipped with an unattended operation feature. The door could move
unexpectedly. NO ONE SHOULD CROSS THE PATH OF THE MOVING DOOR.
15. 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.
16. SAVE THESE INSTRUCTIONS.
The garage door opener lights will turn on when the opener is initially plugged in, the opener is activated, or
power is restored after interruption. The garage door opener lights automatically turn off after a set length of
time. To adjust the light settings, see Using your Door Control.
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