LiftMaster LA400 Residential DC Linear Gate Operator - Manual (Page 31)

30
When gate is in the desired closed position,
press the LEARN LIMITS button.
When gate is in the desired position, press
the LEARN LIMITS button again. Control
board will beep.
When gate is in the desired closed position,
press the LEARN LIMITS button again.
ADJUSTMENT
» LIMITS
LIMITS
The limits are internal settings that indicate when the gates are in the fully open position and the fully closed position. For proper functionality, the limits must be
programmed during the installation process. The programming uses a combination of buttons on the control board.
The specific buttons used for programming depends on which side of the gate the control box is mounted and how many operators the installation includes.
Refer to pages 11 and 12 to determine if the gate is Left-handed or Right-handed.
If a mistake is made during programming press the RESET button on the outside of the control box to start over. The programming times-out automatically after
60 seconds of inactivity.
SINGLE ARM LEFT-HAND SIDE
R2
K2
D4 D2
U4
SET
OPEN
LIMIT
RESET
BUTTON
Press the Gate 1
right button to
move gate to the
desired OPEN
position.
Press the Gate
1 left button to
move gate to
the desired
CLOSED position.
Press the Gate 1 left button to move gate to
the desired OPEN position.
When the SET CLOSE LIMIT LED blinks, press
the Gate 1 right button.
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.
R1 R2
K2 F3
D4 D2
D9 Z3 Z4 U3
D1 D6
OFF SET
OPEN
LIMIT
EN
T
RESET
BUTTON
SET
CLOSE
DIAGNOSTIC
GATE 1
SET
CLOSE
DIAGNOSTIC
GATE 1
SET
CLOSE
DIAGNOSTIC
GATE 1
SET
CLOSE
DIAGNOSTIC
GATE 1
Press the LEARN LIMITS button (SET OPEN LIMIT LED will blink).
Press the LEARN LIMITS button (SET OPEN LIMIT LED will blink).
LEARN LIMITS button
PROGRAM OPEN
PROGRAM CLOSE
PROGRAM OPEN
PROGRAM CLOSE
3
4
5
6
7
3
4
5
6
7
LEARN LIMITS button
SINGLE ARM RIGHT-HAND SIDE
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
When gate is in the desired position, press
the LEARN LIMITS button again. Control
board will beep.
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
OR
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
Close the gate.
1
Engage the operator by turning the release lever clockwise 180°, then turning
the key clockwise 180°.
2