LiftMaster LA400DC LA400DC Owner's Manual - Page 16

Install The Control Box - control board

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INSTALLATION STEP 5 INSTALL THE CONTROL BOX For Large Metal Control Box installation, refer to the following page. STANDARD CONTROL BOX The control box MUST be mounted within 5 feet (1.52 m) of the gate operator. Mount the control box as high as possible for best radio reception. Make sure the control box is level. 1. Remove the screws and open the control box. 2. Select the mounting holes (according to your application) and remove the knockouts using a screwdriver and hammer. 3. Secure the control box to mounting surface. A. Wall or Column: Use the provided screws (4). B. Post: Use U-bolts and rubber washers (not provided) to ensure a watertight seal. Make sure the U-bolts do not protrude more than 3/4 inch from the control box because this can short the control board. WALL OR COLUMN MOUNT 9 1/8" 13 3/4" POST MOUNT 6 3/8" 4 3/8" 3 7/8" 5 7/8" 4 7/8" 2 7/8" 12 1/16" 14

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14
INSTALLATION
STEP 5
INSTALL THE CONTROL BOX
For Large Metal Control Box installation, refer to the following page.
STANDARD CONTROL BOX
The control box MUST be mounted within 5 feet (1.52 m) of the gate
operator. Mount the control box as high as possible for best radio
reception. Make sure the control box is level.
1.
Remove the screws and open the control box.
2.
Select the mounting holes (according to your application) and
remove the knockouts using a screwdriver and hammer.
3.
Secure the control box to mounting surface.
A.
Wall or Column:
Use the provided screws (4).
B.
Post:
Use U-bolts and rubber washers (not provided) to ensure a
watertight seal. Make sure the U-bolts do not protrude more than
3/4 inch from the control box because this can short the control
board.
9 1/8"
13 3/4"
5 7/8"
3 7/8"
4 3/8"
6 3/8"
2 7/8"
12 1/16"
4 7/8"
POST MOUNT
WALL OR COLUMN MOUNT