LiftMaster LA500UL Installation Manual - Page 11

Step 2 Attach the Brackets, For dual gate applications

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INSTALLATION Step 2 Attach the Brackets 1. Insert the key into the lock and turn it 180 degrees counterclockwise. Turn the release lever 180 degrees counterclockwise. The operator is now in manual mode. 2. Position the operator on the brackets and make sure the operator is level and positioned correctly on the gate. 3. Remove the operator from the gate. 4. Completely weld around the post bracket and gate bracket.NOTE: Brackets may need additional reinforcement by welding flat stock as shown. 5. Attach the operator to the post bracket with the bolt, mounting plate, and nut as shown. 6. Attach gate bracket to operator with the bolt, washer, and nut as shown. Tighten the nut until it reaches the bottom of the gate bracket, then turn the nut a half turn, making sure not to overtighten. Make sure the trolley does not reach the fully open or fully closed position. NOTE: Extra force may be needed to move the trolley back and forth. For dual gate applications, repeat the previous installation steps to install the second operator. 11

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11
Step 2 Attach the Brackets
1.
Insert the key into the lock and turn it 180 degrees counterclockwise.
Turn the release lever 180 degrees counterclockwise. The operator is
now in manual mode.
2.
Position the operator on the brackets and make sure the operator is
level and positioned correctly on the gate.
3.
Remove the operator from the gate.
4.
Completely weld around the post bracket and gate bracket.
NOTE:
Brackets may need additional reinforcement by welding flat stock as
shown.
5.
Attach the operator to the post bracket with the bolt, mounting plate,
and nut as shown.
6.
Attach gate bracket to operator with the bolt, washer, and nut as
shown. Tighten the nut until it reaches the bottom of the gate bracket,
then turn the nut a half turn, making sure not to overtighten. Make sure
the trolley does not reach the fully open or fully closed position.
NOTE:
Extra force may be needed to move the trolley back and forth.
For dual gate applications, repeat the previous installation steps to install the second operator.
INSTALLATION