Care Of Your Garage Door Opener - Chamberlain 3280-390 1/2 HP User Manual

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 first year of
operation.
Pages 23 and 24 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 25) 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 and closes fully. Adjust
limits and/or force if necessary. (See pages 23 and 24.)
• Repeat the safety reverse test. Make any necessary
adjustments. (See Adjustment Step 3.)
Once a Year
• Oil door rollers, bearings and hinges. The opener does
not require additional lubrication. Do not grease the door
tracks.
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 fire, 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 (IC) rules, 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.
28
Battery
positive
side up (+)