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OPERATION OF YOUR OPENER
Your opener can be activated by any of the following
devices:
• The GREEN start button
Hold the button down until door starts to move.
• The wall control, outside keyswitch or keyless
entry system (if you have installed any of these
accessories).
• The transmitter or wireless wall
control (84330AML)
Hold the push button down until the door starts to move.
When the opener is activated by transmitter, green start
button or wall control:
• If open, the door will close. If closed, the door will open.
• If closing, the door will stop.
• If opening, the door will stop (allowing space for entry and
exit of pets and for fresh air).
• If the door has been stopped in a partially open or closed
position, it will reverse direction.
• If an obstruction is encountered while closing, the door
will reverse.
• If an obstruction is encountered while opening, the door
will reverse and stop.
• The optional Protector System™ (IR Beams) uses an
invisible beam which, when broken by an obstruction,
causes a closing door to open and prevents an open door
from closing. It is STRONGLY RECOMMENDED for
homeowners with young children.
Allow a 15 minute cooling period after 4 minutes of
continuous operation of the opener.
Opening the door manually:
Door should be fully closed if possible. Weak
or broken springs could allow an open door to
fall rapidly. Property damage or serious personal
injury could result.
The door can be opened manually by pulling the release cord
down firmly.
To re-engage door, pull the release cord down firmly (refer
section 11).
The opener light will turn on:
• when opener is initially plugged in;
• when the power is briefly interrupted;
• when the opener is activated.
(the light turns off automatically after 2-1/2 minutes).
SPECIAL NOTE: Chamberlain strongly recommends that the Protector System
garage door openers.
CARE OF YOUR OPENER
When properly installed, your opener will operate with
minimal maintenance. The opener does not require additional
lubrication.
Limit and force settings: These settings must be checked
and properly set when the opener is installed. Weather
conditions may cause some minor changes in the door
operation, requiring some re-adjustments, particularly during
the first year of operation. Refer to limit and force setting in
sections 12 & 13.
Follow the instructions carefully and repeat the safety
reverse test after any adjustment.
Transmitter: Additional transmitters can be purchased at any
time. Refer to accessories. Any new transmitters must be
programmed into the opener.
Transmitter battery: If transmission range decreases,
replace the battery .
MAINTENANCE OF YOUR OPENER
Once a Month:
• Repeat safety reverse test.
Make any necessary adjustments (refer section 12 & 13).
• Manually operate door. If it is unbalanced or binding, call
for professional garage door service.
• Check to be sure door opens and closes fully.
Set limits and/or force if necessary.
SPECIFICATIONS MLR500
Input Voltage:
Rated Load:
Max.Pull Force:
Max. Door Mass
Standby Power:
Drive:
Max. Drum Rotations:
Memory Registers:
Operating Frequency:
SPECIFICATIONS MLR750
Input Voltage:
Rated Load:
Max.Pull Force:
Max. Door Mass
Standby Power:
Drive:
Max. Drum Rotations:
Memory Registers:
Operating Frequency:
(IR Beams) be installed on all
TM
14
230-240~, 50Hz, 85W
15Nm
450N @ O 300mm
60kg (spring balanced)
3 watts (nominal)
DC gearmotor
permanent lubrication
4.5
64
433.92MHz
230-240~, 50Hz, 90W
20Nm
500N @ O 300mm
80kg (spring balanced)
3 watts (nominal)
DC gearmotor
permanent lubrication
4.5
64
433.92MHz
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