Page 1
WARNING
WARNINGWARNING
The 915GA Automatic Gate Lock is compatible with Chamberlain® Gate
Access Systems GA400D and GA420D. The purpose of the automatic
gate lock is to securely lock the gate in the closed position.
CARTON INVENTORY
Gate Lock
Gate Bracket
Watertight Connector (1)
®
To avoid SERIOUS personal INJURY or DEATH from electrocution:
• Disconnect ALL electric and battery power BEFORE performing
ANY service or maintenance.
• This device is for use ONLY with Chamberlain
®
models GA400D and GA420D.
• Read and follow ALL instructions.
• Have gate in full closed position BEFORE installing the gate lock.
GATE LOCK
MODEL 915GA
gate operator
Gate Bracket Pin
Washer
Cable Ties (6)
Cotter Pin
Keys (2)
Label (1)
BEFORE STARTING
Read and follow all instructions. Check the carton inventory.
Mounting hardware is not provided. Refer to a local hardware store for
necessary mounting hardware.
• The gate lock is designed to use 5/16" diameter mounting hardware.
• For tubular gates, the following items are needed: carriage bolts,
washers, and nuts.
• For chain link gates, the following items will be needed: U-bolts,
carriage bolts, washers, and nuts.
Ensure that the gate closes properly. When the gate lock and gate bracket
are properly aligned, the gate lock will latch onto the gate bracket pin.
NOTE: Some installations may require the gate bracket to be recessed in
the mounting post so the bracket and lock will be flush and lock properly.
Instead of recessing the gate bracket, a spacer may be added between the
gate lock and the gate.
Size the spacer before attempting to mount the gate lock. If installing the
gate lock on a Push-to-Open gate, the gate lock must be installed on the
opposite side of the gate.
Gate bracket must be
recessed so that the
gate lock sits flush.
Gate Bracket
Mounting Post
PUSH-TO-OPEN GATE
PULL-TO-OPEN GATE
1
Open
Spacer
Spacer
Mated Lock
and Bracket
Page 2
INSTALLATION
1818
R93R93
L1L1
D42D42
K2K2
D1D1
Ø
Z22Z22
P1P1
F2F2
MOV1MOV1
D1D1
Q12Q12
U4U4
OFFOFF MAXMAX
OPENOPEN
SINGLE BUTTONSINGLE BUTTON
RESETRESET
STOPSTOP
CHGRCHGR
OVLDOVLD
COMCOM
COMCOM
D129D129
Z4Z4
U3U3
D2D2
D44D44
C11C11
C13C13
C12C12
D16D16
F9F9
R1R1Ø1
R1R1
ØØØØ
K1K1
Q22Q22
F3F3
K3K3
K4K4
R196R196
F1F1
Z12Z12
GATE 2GATE 2
GATE 1GATE 1
MAGRMAGR
SOLSOL
GRGR
WHWH
YLYL
BLBL
RDRD
BRBR
GRGR
WHWH
YLYL
BLBL
RDRD
BRBR
F7F7
24V24V
CTRLCTRL
OVLDOVLD
TIMERTIMER
RUNNINGRUNNING
GATE 2GATE 2
SETSET
OPENOPEN
LIMITLIMIT
SETSET
CLOSECLOSE
LIMITLIMIT
LEARNLEARN
LIMITSLIMITS
GATE 1GATE 1
LEARNLEARN
XMITTERXMITTER
LOCK /LOCK /
ONON OFFOFF
C69C69
OFFOFF MAXMAX
J2J2
Ø
PWRPWR
AC PWRAC PWR
/SOLAR/SOLAR
D8D8
D4D4
R9R9
R329R329
R27R27
BIPART DELAYBIPART DELAY
LOCKLOCK
GNDGND
Z1Z1
R1R1
R2R2
K5K5
F12F12
Q9Q9
R9R9
Ø
F8F8
Q6Q6
Q1Q1
J19J19
R182R182
C1C1
Ø1Ø1
C75C75
C73C73
C72C72
C71C71
C7C7
Ø
C66C66 C65C65
C68C68
C33C33
F11F11
R186R186
R42R42
Ø
R423R423
J24 J23 3J24 J23 3
Ø
A 32VA 32V
3 3
Ø
A 32VA 32V
J21J21
3030
3030
C64C64
R22R22
U2U2
J18J18
K6K6
JU1JU1
JU1JU1
JU2JU2
DB1DB1
D36D36
R184R184
AC PWR/
SOLAR
J4
18
R93
L1
D42
K2
D1
Ø
Z22
P1
F2
MOV1
D1
Q12
U4
OFF MAX
OPEN
SINGLE BUTTON
RESET
STOP
CHGR
OVLD
COM
COM
D129
Z4
U3
D2
D44
C11
C13
C12
D16
R1Ø1
R1
ØØ
K1
Q22
F3
K3
K4
R196
F1
Z12
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
F7
24V
CTRL
OVLD
TIMER
RUNNING
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
GATE 1
LEARN
XMITTER
LOCK /
ON OFF
C69
OFF MAX
J2
Ø
PWR
AC PWR
/SOLAR
D8
D4
R9
R329
R27
BIPART DELAY
GND
Z1
R1
R2
K5
F12
Q9
R9
Ø
F8
Q6
Q1
J19
R182
C1
Ø1
C75
C73
C72
C71
C7
Ø
C66 C65
C68
C33
F11
R186
R42
Ø
R423
J24 J23 3
Ø
A 32V
3
Ø
A 32V
J21
30
30
C64
R22
U2
J18
K6
JU1
JU1
JU2
DB1
D36
R184
NOTE: If the gate lock is being installed on a dual gate, the gate lock
must be mounted on gate 1 (primary gate) and the gate bracket must be
mounted on gate 2 (secondary gate). The lock/bipart delay switch on the
operator will allow gate 1 to close first followed by gate 2.
Gate Bracket
GATE 2 (SECONDARY)
Gate Lock
GATE 1 (PRIMARY)
1. Disconnect all power to the gate operator:
• Disconnect batteries.
• Disconnect AC PWR/SOLAR connector.
Control Board
Remove
terminal
block.
Battery Connections
2. Remove the gate release pin to allow gate to swing freely during the
installation of the gate lock.
3. Align the gate lock and gate bracket to the edge of the gate using a
level to keep gate lock and bracket horizontal.
Gate Release Pin
Level
4. Mark and drill holes for the gate bracket and gate lock.
Gate Bracket Holes
Gate Operator Arm
Gate Bracket
Hairpin Clip
Gate Lock Holes
Gate Lock
2
Page 3
Gate Bracket Pin
Cotter Pin
Gate Lock
Gate Bracket
Washer
Gate Bracket Pin
Cotter Pin
Gate Bracket
Carriage
Bolts
Washer
Additional
Reinforcement
Bolts, Nuts
and Washers
(Not Provided)
Gate Lock
Carriage
Bolts
Carriage
Bolts
Carriage
Bolts
Bolts, Nuts
and Washers
(Not Provided; Size of
Fasteners Depends on
the Gate)
NOTE: For chain link and other fencing, additional reinforcement may be
needed to properly support the gate lock (see below).
5. Mount the gate bracket using hardware (not provided). Hand tighten
the nuts.
6. Insert the gate bracket pin through the gate bracket.
Nuts
Carriage Bolts
Washers
Gate Bracket
7. Slide the washer over the gate bracket pin. Insert the cotter pin
through the gate bracket pin and bend back the ends.
Gate Bracket Pin
Washer
Cotter Pin
9. To ensure proper alignment, close the gate and align the gate lock with
the gate bracket and gate bracket pin.
NOTE: Use the key to manually release the lock.
Gate Bracket Pin
Gate Bracket
Washer
Cotter Pin
8. Mount the gate lock using hardware (not provided).
TYPICAL IRON OR ALUMINUM TUBE FENCE AND GATE INSTALLATION
TYPICAL CHAIN LINK FENCE AND GATE INSTALLATION
3
Page 4
F2
F6
D4D2R9
C64
JMPR1
CONTROL
INPUTS
FORCE
TIMER TO
CLOSE
OFF MAX
OPEN
SINGLE BUTTON
RESET
STOP
SHADOW
INTERRUPT
CHGR
OVLD
COM
COM
COM
FUSE
OPEN
LOOP
INPUTS
POWER
BATT 1BATT 2
F1 20A 32V
R35
D9
Z3
Z4
U3
D1
D27
F5
C11
C13
C12
D15
C2R4
R1
Ø
1
R1
ØØ
R196
Q22
D8
K3
K4
D21
D22
C4
ACCESSORY
OVLD
D6
JMPR2
MOV1
MOV2
DB1
U2
24 VAC/
SOLAR
INPUT
GATE 2
GRN
WHT
YEL
BLU
RED
BRN
F4
10A 32V
F7
24V
J4
WIRING
Connect the Wire to the Control Box
1. Open the cover of the control box by loosening the four screws.
Screws
Control Box
2. Run the wire back to the control box. Use the cable ties to secure the wire to the gate.
To Control Box
Cable Ties
NOTE: Make sure that the gate does not pinch, bind, or rub the wire. Make sure that the wire does not sag or
touch the ground. Never run the wire along the bottom edge of the gate between the gate and the ground.
Cable Ties
3. Feed the wire into the control box through an available knockout
located at the bottom of the control box. If necessary use a
4. Insert the watertight connector and tighten with the watertight
connector nut.
screwdriver and hammer to open a new knockout.
Knockouts
Watertight Connector Nut
Watertight Connector Nut
4
Page 5
Wiring to the Control Board
Z22
R91
CLOSE
EDGE
R94
R92
R93
L1
R1
R2
Z1
K5
K6
K2
F3
10A 32V
D1
Ø
OPEN EDGE/
PHOTO
OPEN
PHOTO
CLOSE
PHOTO
R227
R2
Ø
7
Z2
Ø
R223
P1
Z9
Z8
F2
F6
D4D2R9
C64
JMPR1
R224
U4
CONTROL
INPUTS
FORCE
TIMER TO
CLOSE
OFF MAX
OPEN
SINGLE BUTTON
RESET
STOP
SHADOW
INTERRUPT
CHGR
OVLD
COM
COM
COM
FUSE
OPEN
LOOP
INPUTS
POWER
BATT 1BATT 2
F1 20A 32V
R35
D9
Z3
Z4
U3
D1
D27
F5
C11
C13
C12
D15
C2R4
R1
Ø
1
R1
ØØ
R9
Ø
Q9
K1
R196
Q22
D8
K3
K4
D21
D22
C4
ACCESSORY
OVLD
D6
JMPR2
MOV1
MOV2
DB1
U2
Z12
24 VAC/
SOLAR
INPUT
GATE 2
ACCESSORY
POWER
MAGLOCK
ALARM
GATE 1
C
C
NC
NO
NO
GRN
WHT
YEL
BLU
RED
BRN
GRN
WHT
YEL
BLU
RED
BRN
F4
10A 32V
F7
24V
COM
OVLD
TIMER
RUNNING
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
DIAGNOSTIC
GATE 1
J4
LEARN
XMITTER
MAGLOCK
ON OFF
C71
C7Ø
ON
OFF
LOCK/
BIPART DELAY
Z22
R91
CLOSE
EDGE
R94
R92
R93
L1
R1
R2
Z1
K5
K6
K2
F3
10A 32V
D1
Ø
OPEN EDGE/
PHOTO
OPEN
PHOTO
CLOSE
PHOTO
R227
R2
Ø
7
Z2
Ø
R223
P1
Z9
Z8
F2
F6
D4D2R9
C64
JMPR1
R224
U4
CONTROL
INPUTS
FORCE
TIMER TO
CLOSE
OFF MAX
OPEN
SINGLE BUTTON
RESET
STOP
SHADOW
INTERRUPT
CHGR
OVLD
COM
COM
COM
FUSE
OPEN
LOOP
INPUTS
POWER
BATT 1BATT 2
F1 20A 32V
R35
D9
Z3
Z4
U3
D1
D27
F5
C11
C13
C12
D15
C2R4
R1
Ø
1
R1
ØØ
R9
Ø
Q9
K1
R196
Q22
D8
K3
K4
D21
D22
C4
ACCESSORY
OVLD
D6
JMPR2
MOV1
MOV2
DB1
U2
Z12
24 VAC/
SOLAR
INPUT
GATE 2
ACCESSORY
POWER
MAGLOCK
ALARM
GATE 1
C
C
NC
NO
NO
GRN
WHT
YEL
BLU
RED
BRN
GRN
WHT
YEL
BLU
RED
BRN
F4
10A 32V
F7
24V
COM
OVLD
TIMER
RUNNING
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
DIAGNOSTIC
GATE 1
J4
LEARN
XMITTER
MAGLOCK
ON OFF
R1
R2
K2
FORCE
R1Ø1
Q9
K1
GRN
YEL
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
DIAGNOSTIC
LEARN
XMITTER
LOCK
GND
MAG
SOL
1. Connect the red wire to the SOL terminal of the LOCK Connector.
2. Connect the black wire to the GND terminal of the LOCK connector.
Reconnect the gate operator arm to the gate using the gate release pin
and hairpin clip.
Red
Black
Bi-Part Delay
The Bi-Part Delay MUST be set in the ON position for the gate lock to
function.
Gate Release Pin
Gate Operator Arm
Hairpin Clip
5
Page 6
RECONNECT POWER
1818
R93R93
L1L1
D42D42
K2K2
D1D1
Ø
Z22Z22
P1P1
F2F2
MOV1MOV1
D1D1
Q12Q12
U4U4
OFFOFF MAXMAX
OPENOPEN
SINGLE BUTTONSINGLE BUTTON
RESETRESET
STOPSTOP
CHGRCHGR
OVLDOVLD
COMCOM
COMCOM
D129D129
Z4Z4
U3U3
D2D2
D44D44
C11C11
C13C13
C12C12
D16D16
F9F9
R1R1Ø1
R1R1
ØØØØ
K1K1
Q22Q22
F3F3
K3K3
K4K4
R196R196
F1F1
Z12Z12
GATE 2GATE 2
GATE 1GATE 1
MAGRMAGR
SOLSOL
GRGR
WHWH
YLYL
BLBL
RDRD
BRBR
GRGR
WHWH
YLYL
BLBL
RDRD
BRBR
F7F7
24V24V
CTRLCTRL
OVLDOVLD
TIMERTIMER
RUNNINGRUNNING
GATE 2GATE 2
SETSET
OPENOPEN
LIMITLIMIT
SETSET
CLOSECLOSE
LIMITLIMIT
LEARNLEARN
LIMITSLIMITS
GATE 1GATE 1
LEARNLEARN
XMITTERXMITTER
LOCK /LOCK /
ONON OFFOFF
C69C69
OFFOFF MAXMAX
J2J2
Ø
PWRPWR
AC PWRAC PWR
/SOLAR/SOLAR
D8D8
D4D4
R9R9
R329R329
R27R27
BIPART DELAYBIPART DELAY
LOCKLOCK
GNDGND
Z1Z1
R1R1
R2R2
K5K5
F12F12
Q9Q9
R9R9
Ø
F8F8
Q6Q6
Q1Q1
J19J19
R182R182
C1C1
Ø1Ø1
C75C75
C73C73
C72C72
C71C71
C7C7
Ø
C66C66 C65C65
C68C68
C33C33
F11F11
R186R186
R42R42
Ø
R423R423
J24 J23 3J24 J23 3
Ø
A 32VA 32V
3 3
Ø
A 32VA 32V
J21J21
3030
3030
C64C64
R22R22
U2U2
J18J18
K6K6
JU1JU1
JU1JU1
JU2JU2
DB1DB1
D36D36
R184R184
AC PWR/
SOLAR
J4
1. Reconnect all batteries.
2. Plug in AC or Solar input.
Battery Connections
TEST KEY AND GATE LOCK
1. Insert the key into the gate lock and disengage by turning
the key clockwise.
Control Board
RECONNECT
terminal block
2. Use the remote control to open the gate.
3. Re-engage the gate lock by turning the key counterclockwise.
Remove the key.
4. Use the remote control to close the gate. The gate is locked properly
when the gate lock latches onto the gate bracket pin.
6
Page 7
R91
R94
R93
L1
CLOSE
EDGE
R93
L1
D42
K2
D1
Ø
OPEN EDGE/
PHOTO
OPEN
PHOTO
CLOSE
PHOTO
Z22
P1
F2
MOV1
D1
Q12
U4
CONTROL
INPUTS
FORCE
TIMER TO
CLOSE
OFF MAX
OPEN
SINGLE BUTTON
RESET
STOP
SHADOW
INTERRUPT
CHGR
OVLD
COM
COM
CTRL
LOOP
INPUTS
D129
Z4
U3
D2
D44
C11
C13
C12
D16
F9
R1Ø1
R1
ØØ
K1
Q22
F3
K3
K4
R196
F1
Z12
GATE 2
ACCESSORY
POWER
ALARM
GATE 1
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
F7
24V
CTRL
OVLD
TIMER
RUNNING
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
DIAGNOSTIC
GATE 1
LEARN
XMITTER
LOCK /
ON OFF
PWR
C69
OFF MAX
J2
Ø
PWR
SINGLE BUTTON
AC PWR
/SOLAR
D8
D4
R9
R329
R27
MOV2
R4
C2
BIPART DELAY
LOCK
GND
Z1
R1
R2
K5
F12
Q9
R9
Ø
F8
Q6
Q1
J19
ACCESSORY
0VLD
R182
C1
Ø1
C75
C73
C72
C71
C7
Ø
C66 C65
C68
C33
F11
R186
R42
Ø
R423
J24 J23 3
Ø
A 32V
3
Ø
A 32V
J21
30
30
C64
R22
U2
J18
K6
JU1
JU2
DB1
D36
R184
Control Box
Control Board
K2
D1
Ø
XMITTER
BIPART DELAY
C73
C72
C71
C7
Ø
PROGRAMMING
K2
D1
Ø
K1
R
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
DIAGNOSTIC
GATE 1
XMITTER
BIPART DELAY
Q9
C73
C72
C71
C7
Ø
Reprogram Limits
1. Press the LEARN LIMITS button.
2. The SET OPEN LIMIT LED will blink.
3. Use the GATE 1 buttons to move gate 1 to the
desired open position. Repeat if gate 2 is present
using GATE 2 buttons.
4. Press the LEARN LIMITS button to set the open
limit for gate(s).
5. The SET OPEN LIMIT LED will turn off. The SET
CLOSE LIMIT LED will blink.
6. Use the GATE 1 buttons to move gate 1 to the
desired close position. Repeat if gate 2 is present
using GATE 2 buttons.
7. Press the LEARN LIMITS button to set the close
limit for the gate(s).
8. The SET CLOSE LIMIT LED will turn off. The limits
are now set.
9. Using a programmed remote control or single
button control (SBC) run the gate(s) from the
close limit to the open limit. After reaching the
open limit, run the gate(s) to the close limit. This
will program the force in the open and close
direction.
SECURE CONTROL BOX
Close the control box cover and secure with the four screws.
Screws
Control Box
7
Page 8
TROUBLESHOOTING
NOTE: Follow these steps ONLY if the gate lock fails to activate properly.
PROBLEM POSSIBLE SOLUTIONS
The gate lock does not activate. 1. Verify that all wiring is correct.
2. Check wiring connections. It is possible that a wire is inserted too far into a terminal block, grabbing the
insulation instead of the copper wire.
3. Verify that all terminal blocks are properly seated on the control board. If these blocks are offset by one
position, it can prevent correct operation.
4. The gate bracket pin may be binding and preventing the lock from properly sliding. Verify that the bracket and
gate lock are properly aligned. Verify that the gate lock can be manually opened with the key when the gate is
closed. Do not push against the gate when manually opening the gate lock.
The gate lock does not activate
fast enough to release the
bracket pin in order to allow the
gate to open.
The gate reverses unexpectedly. 1. Ensure that there are no obstructions impeding the travel of the gate.
Replacement Parts
Key ....................................................................................K80-34224
FOR TECHNICAL SUPPORT CALL OUR TOLL FREE NUMBER: 1-866-826-4943
1. The gate may be moving too quickly for the gate lock to properly activate. Set the Lock/Bipart delay to the ON
position.
2. The gate bracket pin may be binding and preventing the lock from properly sliding. Verify that the bracket and
gate lock are properly aligned. Verify that the gate lock can be manually opened with the key when the gate is
closed. Do not push against the gate when manually opening the gate lock.
3. Check wiring connections. A loose connection may cause intermittent operation of the gate lock, delaying its
response to activate properly.
2. Reprogram limits. See page 7.
3. Readjust force setting according to the operator owner’s manual.
© 2008, The Chamberlain Group, Inc.
01-33938E All Rights Reserved
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