Linear LDCO850 - Chain Adjustment; Replacing the Back-Up Battery

12
Chain Adjustment
If necessary, use the following steps to adjust the chain.
1 Hold the turnbuckle with a at blade screwdriver and
loosen the two locknuts with a 7/16” end wrench.
2 Twist the turnbuckle to adjust the chain tension. Adjust
the chain until the turnbuckle is sightly above the rail.
3 Hold the turnbuckle with a at blade screwdriver and
tighten the two locknuts with a 7/16” end wrench.
Every Year
Check the door hardware for lubrication needs. Lubricate door hinges, rollers and bearings according to door
manufacturer’s recommended procedures.
TURNBUCKLE
LOCKNUTS
TO HEAD
LOCKNUTS
TIGHTEN
LOCKNUTS
LOOSEN
HOLD TURNBUCKLE
WITH FLAT BLADE
SCREWDRIVER TO
BACKUP LOCKNUTS
TWIST
TURNBUCKLE
CHAIN
TIGHTEN
CHAIN
LOOSEN
ADJUSTING A CHAIN-DRIVE
Replacing the Back-Up Battery
IMPORTANT: Unplug operator before proceeding.
1 Loosening the four housing screws and remove the
housing.
2 Remove the three screws holding the battery box and
remove.
3 Insert the new 12 Volt, 5.4 Amp hour battery into the
battery box and re-install the box using the three
battery box screws.
4 Connect the battery terminal wires to the battery
terminals. Make sure the RED wire is connected to the
POSITIVE terminal and the BLACK wire is connected
to the NEGATIVE terminal.
5 Replace the operator housing and tighten the 4 screws
to secure the housing.
To remove housing just loosen the
screws, not necessary to remove.
12 Volt,
5.4 Amp hour
Battery
Battery
Box