Chamberlain LiftMaster PROFESSIONAL SECURITY+ 2500C Manuel Du Propriétaire page 29

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 24 and 25 refer to the limit and force
adjustments. Only a screwdriver is required. Follow
the instructions carefully.
UP
Force
9
kg
7 3
5
FORCE CONTROLS
(BACK PANEL)
Repeat the safety reverse test (Adjustment
Step 3, page 26) after any adjustment of limits or
force.
THE REMOTE CONTROL BATTERY
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.
Having a Problem?
1. The opener doesn't operate from either the
Door Control or the remote control:
• Does the opener have electric power? Plug a lamp
into the outlet. If it doesn't light, check the fuse box
or the circuit breaker. (Some outlets are controlled
by a wall switch.)
• Have you disabled all door locks? Review
installation instruction warnings on page 7.
• Is there a build-up of ice or snow under the door?
The door may be frozen to the ground. Remove
any restriction.
• The garage door spring may be broken. Have it
replaced.
2. Opener operates from the remote, but not from
the Door Control:
• Is the door control lit? If not, reverse the wires. If
the opener runs, check for a faulty wire connection
at the door control, a short under the staples, or a
broken wire.
• Are the wiring connections correct? Review
Installation Step 6, page 14.
DOWN
Force
1
kg
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 24
and 25.)
• 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.
WARNING
To prevent possible SERIOUS INJURY or DEATH:
• NEVER allow small children near batteries.
CAUTION
• If battery is swallowed, immediately notify doctor.
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.
3. The door operates from the Door Control, but
not from the remote control:
• Is the door push bar flashing? If your model has
the Lock feature, make sure it is off.
• Program the opener to match the remote control
code. (Refer to instructions on the motor unit
panel.) Repeat with all remotes.
4. The remote control has short range:
• Change the location of the remote control in your
car.
• Check to be sure the antenna on the side or back
panel of motor unit extends fully downward.
• Some installations may have shorter range due to
a metal door, foil backed insulation, or metal
garage siding.
5. Opener noise is disturbing in living quarters of
home:
• If operational noise is a problem because of
proximity of the opener to the living quarters, the
Vibration Isolator Kit 41A3263 can be installed.
This kit was designed to minimize vibration to the
house and is easy to install.
29