Frequently Asked Questions - Chamberlain Motorlift ML700 Anleitung

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Frequently asked questions

1. Door opener doesn't work with remote control:
• Is the opener connected to the power supply? If a lamp connected to
the power socket does not turn on, check fuse or circuit breaker.
(Some sockets are enabled via a wall switch).
• Are all door locks disabled?
See safety instructions!
• Try operating with a new battery.
• If you have two or more transmitters, of which only one works,
check programming of the receiver.
• Is there snow / ice under the door? If yes, the door may be frozen
onto the ground. Remove all obstacles.
• Perhaps the door spring is defective. This must be replaced by
a specialist.
2. Transmission range of the device is too low:
• Is a battery inserted? Put a new battery.
• Try radio control in the car at another location.
• The transmission range diminishes for metal doors, aluminium or
metal panels.
3. Door reverses for no apparent reason:
• Is the door hindered by anything? Pull manual release and operate
door by hand. In case of unbalanced or stuck gate, please contact
the service department.
• Re-programme operating power and stretch of way of the opener.
• Clear ice or snow in the closing area of the door.
• If the door reverses upon reaching the door position 'Closed',
the limit switch must be set for this door position.
After completing every setting, the automatic safety reverse
must be checked again:
• An occasional resetting of the end positions is not unusual.
In particular, the weathering can shift the doorway.
4. The garage door opens and closes by itself:
• Delete all transmitters and then re-programme them.
See „Programming of other handheld transmitters".
• Is the remote control button jammed in position „ON"?
• Use only original remote controls! The use of third-party products
leads to disturbances.
• The remote control button was pressed accidentally (pocket).
• Cable of the wall switch is damaged (remove for testing purposes).
• An accessory connected to the opener causes the drive (remove
for testing purposes).
5. Door does not close completely:
• Re-programme stretch of way of the opener. Check for alterations
in the mechanical components, e.g. door arms and fittings.
After each new setting of the door position 'Closed',
the automatic safety reverse should be checked for function.
6. The door opens, but does not close:
• If installed, the light barrier should be checked. If the LED at the light
barrier blinks, the alignment should be checked.
• Check transmitter or wall switch for function.
7. Operator light doesn't turn on:
• Open or close door. The light remains switched on for 2.5 minutes.
• Disconnect opener from the mains and connect again.
The light comes on for a few seconds.
• No power.
8. Operator light doesn't turn off:
• Disconnect the power from the mains supply for a short time
and try again.
• The 2.5 minutes are not yet over.
9. Motor hums and runs very briefly, but does not function:
• Garage door springs are defective. Close the door and disconnect
from the opener by pulling on the handle of the carriage (manual
release). Open and close door manually. If the door is properly
balanced, it is held at each point of the doorway by the door springs
alone. If this is not the case, contact your service centre.
• If this problem appears during the first use, the door may be locked.
Deactivate door lock.
• Release opener from the door and try without door. If the door is fine,
re-programme operating force and stretch of way.
10. Opener works only in one direction:
• Door springs may be defective or the door is stiff in one direction.
• If the door is fine, re-programme operating power and stretch of way
of the opener.
11. The chain rattles on the rail:
• Adjust the chain tension. The cause is usually a very tight chain.
The spring on the clamping device of the rail must not be
compressed completely.
• The door runs unevenly and makes the drive vibrate. Improve door
run.
12. Opener will not start due to power failure:
• Disconnect from the opener by pulling on the handle on the carriage
(manual release). The door can now be manually opened and
closed. If the opener is re-activated, the carriage also gets
re-connected.
• If installed, the carriage is detached from the drive in case of power
failure by an external emergency release from outside the garage.
13. Door reverses after the force was programmed:
• See if the rail bends. The opener requires a lot of power to move the
door. Repair or install door correctly.
• Door is very heavy or in poor condition. Call a specialist.
14. Rail bends on the opener:
• Door is heavy, very heavy, stiff or in poor condition. Call a specialist.
• A swing of the rail while moving is a sign of an unevenly functioning
door with constantly changing power requirements. Call specialist,
possibly lubricate door. An additional suspension on the rail can be
a remedy.
15. The opener „runs" (audible turning of motor) but the carriage
does not move:
• The carriage is released from the opener.
• In a new installation: During the assembly of motor and rail, the
pre-assembled adapter sleeve between the motor shaft and the rail
was not installed. This sleeve is pre-assembled at factory, but can
be removed. Standing behind the opener it can be observed whether
the gearwheel turns in the rail or just the motor.
• In a new installation: The chain has come off from the gearwheel in
the rail. Standing behind the opener, you can see the gearwheel.
• After years of use: Is the release defective or continuously dis-
engaged?
• After years of use: The sleeve between rail and motor or the motor
control gear is defective.
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