Dual gate (left-side primary operator), Adjustment, Limits – LiftMaster LA400 Residential DC Linear Gate Operator User Manual
Page 32: Program open program close

31
NOTES:
• The gate with the longer travel span (opening) must be set as the primary gate (GATE 1).
• If one gate is overlapping the other, the gate that is overlapping must be connected to GATE 1 so it will start moving before the other gate; GATE 2 may need to be closed
first if there is overlap or a gate lock is being used.
• The programming can be exited at any time by pressing the RESET button. Programming times-out automatically after 60 seconds of inactivity.
FORCE
GATE 2
SET
CLOSE
LIMIT
LE
LIMITS
When the SET CLOSE
LIMITS LED blinks,
press the GATE 2
left button to close
the right operator.
FORCE
GATE 2
SET
CLOSE
LIMIT
LE
LIMIT
SET
CLOSE
DIAGNOSTIC
GATE 1
The control board beeps and the SET OPEN LIMIT and SET CLOSE LIMIT LEDs stop blinking, programming is now complete. (If the SET OPEN LIMIT LED continues to blink,
repeat programming. If the problem continues, see Troubleshooting section.)
Test the limits by pressing the SBC to open and close the gate.
DUAL GATE (LEFT-SIDE PRIMARY OPERATOR)
Press the GATE 2
right button to move
the right operator into
the OPEN position.
Press the LEARN LIMITS
button. Control board
will beep.
Press the
GATE 1 left
button to
close the left
operator.
Press the LEARN LIMITS button.
PROGRAM OPEN
PROGRAM CLOSE
Press the LEARN LIMITS button
(SET OPEN LIMIT LED will blink).
ADJUSTMENT
» LIMITS
3
5
6
7
8
9
LIMITS
R2
K2
D4
D2
U4
SET
OPEN
LIMIT
RESET
BUTTON
LEARN LIMITS button
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
Press the GATE 1
right button to open
the left operator.
SET
CLOSE
DIAGNOSTIC
GATE 1
4
Close the gate.
1
Engage the operator by turning the release lever clockwise 180°, then turning
the key clockwise 180°.
2