Pad Mounting - Chamberlain LiftMaster Professional SW420 Owner's Manual

PAD MOUNTING

1. Layout the concrete pad (Figure 1).
IMPORTANT NOTE: The relative location of the operator to the
fence and the gate is critical. Be sure that the measurements for
operator mounting are taken from the centerline of the fence and
of the gate hinge.
2. Locate electrical conduit, as required, prior to pouring
concrete.
3. Pour concrete pad.
4. Bolt the (2) pad mount brackets to the bottom of the operator
with the hardware provided.
5. Secure the operator to the concrete pad. It is very important
that the operator be level and square to the gate.
Figure 2
Using Suitable Hardware Secure
Operator to L-bolts
Concrete Pad
1/2" (12.7 mm)
Concrete Anchors
(4 Required)
I N S T A L L A T I O N
Figure 1
1/2" Concrete
Anchor Bolts
Power and Control
Wiring Should Be Run In
Separate Conduit
2" to 4"
(5.1 to 10.2 cm) Above
Grade
Depth Required By Local
Codes or Below Frost
Line
10
Pivot
Fence Line
Gate
6-1/2"
19"
18"x30" Pad
Minimum
Parallel Mount
Pivot
Fence Line
Gate
6"
14-3/4"
Perpendicular Mount
Hardware Type (6X)
26-3/4"
6"
18-1/2"
19"
Pad Mount Bracket