Operation Safety Instructions; Important Safety Instructions; Care Of Your Opener; Maintenance Schedule - Chamberlain 3500 - 1/2HP Series Owner's Manual

IMPORTANT SAFETY INSTRUCTIONS

WARNING
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 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.
8.
Limit and force adjustment controls
Limit Controls
Adjustment Label
(Located on the left side panel)
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.
Once a Month
Manually operate door. If it is unbalanced or
binding, call for professional garage door service.
Check to be sure door opens and closes fully.
Adjust limits and/or force if necessary. (See pages
28 and 29.)
Repeat the safety reverse test. Make any
necessary adjustments. (See page 30.)

Care of Your Opener

Force Controls
9 9
1 1
7 3 7 3
5 5
KG
KG
Adjustment Label
(Located on the back panel)

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 green test light will glow and the opener should
operate when the remote control is activated.
If the test light is dim or off , replace the battery.
The 12V battery should produce power for at least a
year.
Dispose of your old battery properly.
Twice a Year
Check chain tension. Disconnect trolley first.
Adjust if necessary (See page 11).
Once a Year
Oil door rollers, bearings and hinges.
The opener does not require additional
lubrication.
Do not grease the door tracks.
31
WARNING