Operation, Using your garage door opener, Save these instructions – Chamberlain 3130M 1/3 HP User Manual
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OPERATION
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 eight 
Security✚
®
remote controls and one 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 large 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 (with the safety reversing 
sensor correctly installed and aligned)
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. If the
obstruction interrupts the sensor beam, the opener 
lights will blink for fi ve seconds.
6. If obstructed while opening, the door will stop.
7. If fully open, the door will not close when the beam is 
broken. The sensor has no effect in the opening cycle.
If the sensor is not installed, or is misaligned, the door 
won’t close from a hand-held remote. However, you can 
close the door with the Door Control, the Outside Keylock, 
or Keyless Entry, if you activate them until down travel 
is complete. If you release them too soon, the door will 
reverse. 
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 the 
Multi-Function Door Control is activated. Bulb size is A19. 
Bulb power is 100 watts maximum.
Security✚
®
light feature: Lights will also turn on when
someone walks through the open garage door. With a 
Multi-Function Door Control, this feature may be turned 
off as follows: With the opener lights off, press and hold 
the light button for 10 seconds, until the light goes on, 
then off again. To restore this feature, start with the 
opener lights on, then press and hold the light button for 
10 seconds until the light goes off, then on again.
IMPORTANT SAFETY INSTRUCTIONS
To reduce the risk of SEVERE INJURY or DEATH:
WARNING
WARNING
WARNING
WARNING
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
OPEN 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.
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 1-1/2" high 
(3.8 cm) object (or a 2x4 laid fl at) on the fl oor. Failure 
to adjust the garage door opener properly increases 
the risk of SEVERE INJURY or DEATH.
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.
15.
SAVE THESE 
INSTRUCTIONS.
