Using The Wall-Mounted Door Control; Care Of Your Opener; To Open The Door Manually - Chamberlain POWER DRIVE 7920KD Assembly & Installation Manual

Chamberlain garage door opener user manual
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USING THE WALL-MOUNTED DOOR CONTROL

The Multi-Function Door Control
Press the push bar/push button to open or
close the door. Press again to reverse the
door during the closing cycle or to stop the
door while it's opening.
Light Feature
Press the Light button to turn the opener
light on or off. It will not control the opener
lights when the door is in motion. If you turn it on and then
activate the opener, the light will remain on for 4-1/2
minutes. Press again to turn it off sooner. The 4-1/2 minute
interval can be changed to
1-1/2, 2-1/2, or 3-1/2 minutes as follows:
1. Press and hold the Lock button until the light blinks
(about 10 seconds). A single blink indicates that the
timer is reset to 1-1/2 minutes.
2. Repeat the procedure and the light will blink twice,
resetting the timer to 2-1/2 minutes.
3. Repeat again for a 3-1/2 minute interval, etc., up to a
maximum of four blinks and 4-1/2 minutes.
Lock Feature
Designed to prevent operation of the door from hand-held
remote controls. However, the door will open and close
from the Door Control, the Outside Keylock and the
Keyless Entry Accessories.
To activate, press and hold the Lock button for 2 seconds.
The push bar light will flash as long as the Lock feature
is on.
To turn off, press and hold the Lock button again for
2 seconds.The push bar light will stop flashing. The Lock
feature will also turn off whenever the "Learn" button on
the motor unit panel is activated.

TO OPEN THE DOOR MANUALLY

The door should be fully closed if possible. Pull down on
the emergency release handle and lift the door manually.
To reconnect the door to the opener, press the door
control push bar.
The lockout feature prevents the trolley from reconnecting
automatically, pull the emergency release handle down
and back (toward the opener). The door can then be
raised and lowered manually as often as necessary. To
disengage the lockout feature, pull the handle straight
down. The trolley will reconnect on the next UP or DOWN
operation.

CARE OF YOUR OPENER

Push
Bar
Limit and Force Adjustments
Lock
Weather conditions may cause some
Button
minor changes in door operation requiring
Light
some readjustments, particularly during
Button
the first year of operation.
Push
Pages 20 and 21 refer to the limit and
Button
force adjustments. Only a screwdriver is
required. Follow the instructions carefully.
Repeat the safety reverse test (page 22) after any
adjustment of limits or forces.
Maintenance Schedule
Once a Month
• Manually operate door. If it is unbalanced or binding, call
a trained door systems technician.
• Check to be sure door opens and closes fully. Adjust
limits and/or force if necessary.
• Repeat the safety reverse test. Make any necessary
adjustments.
Twice a Year
• Check chain tension. Disconnect trolley first. Adjust if
necessary.
Once a Year
• Oil door rollers, bearings and hinges. The opener does
not require additional lubrication. Do not grease door
tracks.
To prevent possible SERIOUS INJURY or DEATH from a falling
garage door:
• 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.
• NEVER use emergency release handle unless garage
doorway is clear of persons and obstructions.
• NEVER use handle to pull door open or closed. If rope knot
becomes untied, you could fall.
Trolley
Trolley
B9
Release Arm
(In Manual
Disconnect
Position)
Manual disconnect position
24
LIMIT CONTROLS
Open Force
FORCE CONTROLS
WARNING
WARNING
CAUTION
Trolley
Emergency
Release Handle
(Down and Back)
Lockout position
9
9
1
1
7
3
7
3
5
5
KG
KG
Close Force
Trolley
Release
Arm
B9

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