LDCO 841/863
Smart WI-FI Garage Door Opener
DC motor with LED lighting and belt- or chain-drive rail
Battery Backup Capable
IMPORTANT SAFETY NOTES
Please read the instructions carefully! This garage door
operator is designed to provide safe and reliable service
if installed and tested as described in these instructions.
A garage door is the largest mechanical appliance in a
residence. Care must be taken to prevent injury or death
during installation and operation of the garage door and
garage door operator.
WARNING
This type of warning note is used to indicate
possible electrical shock hazards that may cause
serious injuries or death.
IMPORTANT INSTALLATION SAFETY INSTRUCTIONS
TO REDUCE THE RISK OF SEVERE INJURY OR DEATH TO PERSONS,
REVIEW THESE INSTALLATION SAFETY STEPS BEFORE PROCEEDING
1
READ AND FOLLOW ALL INSTALLATION INSTRUCTIONS.
2
Install only on a properly balanced sectional garage door. An improperly balanced door could result in severe injury or
death. Repairs to cables, spring assemblies, and other hardware must be made by a qualified service person before
installing the opener.
3
Disable all locks and remove all ropes connected to the garage door before installing the opener. Ropes connected to a
garage door can cause entanglement and death.
4
If possible, install door opener 7 feet or more above the floor with the manual release handle mounted 6 feet above the
floor.
5
Do not connect the opener to the power source until instructed to do so.
6
Locate the wall station or push button within sight of the door at a minimum height of 5 feet so that small children
cannot reach it. Locate the wall station or push button away from all moving parts of the door.
7
Install the User Safety Label on the wall adjacent to the wall station or push button.
8
Upon completion of the installation, the door must reverse when it comes in contact with a 1-1/2" high object (or a 2x4
laid flat at the center of the door) on the floor and when the infrared safety beam is blocked.
9
Do not wear watches, rings or loose clothing while installing or servicing an opener. Jewelry or loose clothing can be
caught in the mechanism of the garage door or the opener.
10 DISCONNECT THE ELECTRIC POWER FROM THE GARAGE DOOR Opener BEFORE MAKING ANY REPAIRS OR REMOVING
THE COVER.
11 Disconnecting the Door from the Opener: With the door in any position (preferably closed), carefully pull the red release
handle. USE CAUTION IF THE DOOR IS OPEN. An open or partially open door may fall rapidly if disconnected from the
opener. Do not allow anyone in the path of the door.
12 Use this operator only with sectional overhead door no more than 10FT tall.
1 Check the Door Balance
1 From outside the garage, slowly open the door all
the way, and then close it all the way. Notice if there
is any binding, sticking or rubbing. The door should
move smoothly in both directions.
2 Raise the garage door about halfway up. Carefully
release the door and see if the door balances. It
should stay in place. Close the door.
IMPORTANT: If the garage door is unbalanced or
the door travel isn't smooth, have a qualified garage
door professional adjust or repair the door.
2 Attach the Rail to the Operator
1 Place the operator head on the garage floor with
cardboard underneath it to protect the finish.
2 Align the rail over the center of the operator head.
3 Be sure the flat on the sprocket lines up with the flat
on the drive shaft.
4 Slide the sprocket onto the shaft.
5 Attach the rail to the operator head by installing four
¼-20 x ¾" bolts.
6 Tighten the four bolts in the order shown with a
7/16" socket.
Installation instructions
For Sectional Type Doors
WARNING
THE FOLLOWING FORMATS ARE USED FOR SAFETY
NOTES IN THESE INSTRUCTIONS.
WARNING
This type of warning note is used to indicate
possible mechanical hazards that may cause
serious injuries or death.
CAUTION
This type of warning note is used to indicate
the possibility of damage to the garage door or
garage door operator.
CHECKING THE DOOR BALANCE
ALIGNING THE RAIL
LINE UP THE RAIL OVER THE DRIVE SHAFT
ON TOP OF THE OPERATOR HEAD
CHAIN DRIVE
BE SURE THE FLAT ON THE SPROCKET
LINES UP WITH THE FLAT ON THE DRIVE SHAFT
MATING THE SPROCKET AND SHAFT
CHAIN DRIVE
TABS FIT INTO SLOTS
ATTACHING THE RAIL
TIGHTEN THE RAIL-TO-HEAD BOLTS IN THIS ORDER
1
2
Manufactured by:
Nortek Security & Control LLC
USA & Canada (800) 421-1587
www.nortekcontrol.com
THE DOOR SHOULD
BALANCE WITHOUT
GOING UP OR DOWN
BELT DRIVE
SLIDE THE SPROCKET
INTO THE SHAFT
BELT DRIVE
INSTALL FOUR 1/4-20 x 3/4"
RAIL-TO-HEAD BOLTS
USING A 7/16" SOCKET
PULL THE CHAIN OR BEL
AWAY FROM THE RAIL TO
FIT THE SOCKET ON TH
FRONT BOLTS
R
3
4
T
E
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