Chamberlain SECURITY 4620 - Manual (Page 31)

Once a Month
Manually operate door. If it is unbalanced or binding,
call for professional garage door service.
Check to be sure door opens & closes fully. Adjust
limits and/or force if necessary. (See pages 28 & 29.)
Repeat the safety reverse test. Make any necessary
adjustments (See page 30).
Once a Year
Oil door rollers, bearings and hinges. The opener does
not require additional lubrication. Do not grease the door
tracks.
Weather conditions may cause some minor changes in
door operation requiring some re-adjustments,
particularly during the first year of operation.
Pages 28 and 29 refer to the limit and force adjustments.
Only a screwdriver is required. Follow the instructions
carefully.
Repeat the safety reverse test (page 30) after any
adjustment of limits or force.
Care of Your Opener
31
IMPORTANT SAFETY INSTRUCTIONS
To reduce the risk of severe injury or death to persons:
1. READ AND FOLLOW ALL INSTRUCTIONS.
2. Do not permit children either to operate or to play with the opener. Keep remote control in a location
inaccessible to children.
3. Operate opener only when the door is in full view and free from any obstruction. Keep the door in sight until
it is completely closed. NO ONE SHOULD CROSS THE PATH OF THE MOVING DOOR.
4. Check safety reversal system monthly. See page 30. The garage door MUST reverse on contact with a one
inch object (or a 2x4 board laid flat) placed on the floor. If an adjustment is made to one of the controls
(either force or limits of travel), the other control may need to be adjusted also, and the safety reversal
system must be checked. Failure to properly adjust the opener may result in severe injury or death.
5. If possible, use the manual release only when the door is in a closed position. Caution should be taken
whenever the disconnect cord is actuated with the door open. Weak or broken springs may cause the door to
fall rapidly, causing injury or death to persons.
6. KEEP GARAGE DOORS PROPERLY BALANCED. See page 3. An improperly balanced door may not
reverse when required, and could result in severe injury or death. Repairs to cables, spring assemblies and
other hardware must be made by a professional garage door person.
7. Disconnect the electric power to the garage door opener before making any repairs or removing the covers.
SAVE THESE INSTRUCTIONS
FORCE CONTROLS
Kg Kg
1
3
8
7
5
1
3
8
7
5
LIMIT CONTROLS
+
+
WARNING WARNING
Force and Limit Adjustment Controls
Maintenance Schedule
The remote control transmitter
The opener must learn the code of any new remote
control. Page 33 explains how to program your receiver
and how to erase all codes if required. Self service of
your receiver and remote control is not recommended. If
service is needed, call the toll-free number listed on the
back page.
The remote control battery
The lithium battery should produce
power for up to 5 years. To replace the
battery, pry open case with visor clip
or screwdriver, as shown. Insert
battery positive side up.
Dispose of your old battery properly.
WARNING
Keep batteries away from small children. If
swallowed, promptly notify doctor.