Care Of Your Garage Door Opener; Maintenance Schedule; The Remote Control Battery; Having A Problem - LiftMaster MERIK SECURITY+ 790LMK Manual Del Propietário

Care of Your Garage Door Opener

MAINTENANCE SCHEDULE

Every 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 29 and 30.)
• Repeat the safety reverse test. Make any necessary
adjustments. (See page 31.)
Two Times a Year
• Check chain tension. Disconnect trolley fi rst. Adjust if
necessary. (See page 15.)
Every Year
• Oil door rollers, bearings and hinges. The opener does not
require additional lubrication. Do not grease the door tracks.
Every Three to Four Years
• Use a rag to wipe away the existing grease from the garage
door opener rail. Reapply a small layer of white lithium grease
to the rail
.
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 212°F (100°C)
or incinerate.

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.
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.

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 15.
• 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.
• Repeated operation may have tripped the overload protector
in the motor. Wait 15 minutes and try again.
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.
3. The door operates from the Door Control, but not from the
remote control:
• Is the door push bar fl ashing? 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:
Battery
positive
• If operational noise is a problem because of proximity of the
side up (+)
opener to the living quarters, the Vibration Isolator Kit 89LM
can be installed. This kit was designed to minimize vibration
to the house and is easy to install.
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