Craftsman 139.18451DM Manuel D'instructions page 32

Care of Your Opener
LIMIT AND FORCE ADJUSTMENTS:
Weather conditions may cause some
minor changes in door operation
requiring some re-adjustments,
particularly during the fi rst year of
operation.
Pages 27 and 28 refer to the limit
and force adjustments. Only a
screwdriver is required. Follow the
instructions carefully.
Repeat the safety reverse test
(Adjustment Step 3, page 29) after
any adjustment of limits or force.
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 & closes fully. Adjust limits and/or
force if necessary (See pages 27 and 28).
• Repeat the safety reverse test. Make any necessary adjustments
(See Adjustment Step 3).
Twice a Year
• Check chain tension. Disconnect trolley fi rst. 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.
FORCE CONTROLS
LIMIT CONTROLS
32
THE REMOTE CONTROL BATTERY
To prevent possible SERIOUS INJURY or DEATH:
• NEVER allow small children near batteries.
• If battery is swallowed, immediately notify doctor.
To reduce risk of fi re, explosion or chemical burn:
• Replace ONLY with 3V2032 coin batteries.
• DO NOT recharge, disassemble, heat above 100° C (212° F)
or incinerate.
The lithium battery should produce
power for up to 5 years.
To replace battery, use the visor clip or
screwdriver blade to pry open the case
as shown. Insert battery positive side
up (+).
Dispose of old battery properly.
Replace the battery with only 3V2032
coin cell batteries.
NOTICE: To comply with FCC and or Industry Canada rules (IC), adjustment or modifications of this
receiver and/or transmitter are prohibited, except for changing the code setting or replacing the
battery. THERE ARE NO OTHER USER SERVICEABLE PARTS.
Tested to Comply with FCC Standards FOR HOME OR OFFICE USE. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired operation.
Open this end
first to avoid
cracking
housing