LiftMaster HCTDCU HCTDCU Installation Manual - Page 11

Install Vented Plug, Determine Location For Operator

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INSTALLATION STEP 2 INSTALL VENTED PLUG 1. Remove the dome plug from the operator chassis. 2. Remove the solid plug in the gear reducer and replace it with the vented plug (provided in bag with manual). 3. Tighten the vented plug with a socket or Allen wrench. 4. Re-insert the dome plug. Dome Plug Vented Plug STEP 3 DETERMINE LOCATION FOR OPERATOR 1. With the gate/door closed, mark the center. 2. Open the gate/door and mark the center point on the ceiling. 11

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11
STEP 3
DETERMINE LOCATION FOR OPERATOR
INSTALLATION
1. With the gate/door closed, mark the center.
2. Open the gate/door and mark the center point on the ceiling.
STEP 2
INSTALL VENTED PLUG
1. Remove the dome plug from the operator chassis.
2.
Remove the solid plug in the gear reducer and replace it with the
vented plug (provided in bag with manual).
3.
Tighten the vented plug with a socket or Allen wrench.
4. Re-insert the dome plug.
Vented Plug
Dome Plug