Operation; Using Your Garage Door Opener - Chamberlain 4142DC Owner's 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 until completely closed.
NO ONE SHOULD CROSS THE PATH OF THE MOVING
DOOR.
5. NO ONE SHOULD GO UNDER A STOPPED, PARTIALLY
OPEN DOOR.
6. If possible, use emergency release handle to disengage
trolley ONLY when garage door is CLOSED. Weak or broken
springs or unbalanced door could result in an open door
falling rapidly and/or unexpectedly.
7. NEVER use emergency release handle unless garage
doorway is clear of persons and obstructions.

Using Your Garage Door Opener

®
Your Security✚ opener and hand-held remote control have been
factory-set to a matching code which changes with each use,
randomly accessing over 100 billion new codes. Your opener will
operate with up to 64 Security✚
®
Security✚ Keyless Entry System. If you purchase a new remote,
or if you wish to deactivate any remote, follow the instructions in
the Programming section.
Activate your opener with any of the following:
• The hand-held Remote Control: Hold the push button down until
the door starts to move.
• The wall-mounted Door Control: Hold the push button or bar
down until the door starts to move.
• The Keyless Entry (See Accessories): If provided with your
garage door opener, it must be programmed before use.
See Programming.
When the opener is activated
1. If open, the door will close. If closed, it will open.
2. If closing, the door will reverse.
3. If opening, the door will stop.
4. If the door has been stopped in a partially open position, it will
close.
5. If obstructed while closing, the door will reverse.
6. If obstructed while opening, the door will stop.
WARNING
IMPORTANT SAFETY INSTRUCTIONS
®
remote controls and one
WARNING WARNING
8. NEVER use handle to pull garage door open or closed. If
rope knot becomes untied, you could fall.
9. If one control (force or travel limits) is adjusted, the other
control may also need adjustment.
10. After ANY adjustments are made, the safety reversal
system MUST be tested.
11. Safety reversal system MUST be tested every month.
Garage door MUST reverse on contact with 38 mm
obstacle on the floor.
12. 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.
13. 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.
14. ALWAYS disconnect electric power to garage door opener
BEFORE making ANY repairs or removing covers.
SAVE THESE INSTRUCTIONS .
15.
7. The optional Protector System
when broken by an obstruction, causes a closing door to open
and prevents an open door from closing. It is STRONGLY
RECOMMENDED for homeowners with young children.
The opener lights will turn on under the following conditions:
when the opener is initially plugged in; when power is restored
after interruption; when the opener is activated.
They will turn off automatically after 4-1/2 minutes or provide
constant light when the Light feature on a Multi-Function Door
Control is activated. Bulb size is A19. Bulb power is 100 watts
maximum.
32
®
uses an invisible beam, which,