Pad Mounting - Chamberlain LiftMaster Professional SW420 Manual

NOTE: For the following instructions refer to Figures 1 & 2.
1. Layout the concrete pad as detailed in 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 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
1/2" concrete anchoring
bolts (4 required)
P A D M O U N T I N G
Figure 1
Power and control wiring
should be run in seperate conduit
Concrete Pad
2" to 4"
above grade
Depth required
by local codes or
below frost line
10
Pivot
Fence Line
Gate
6-1/2"
19"
18"x30" Pad
Minimum
1/2" red head bolts
or anchors
Parallel Mount
Pivot
Fence Line
Gate
6"
14-3/4"
Perpendicular Mount
Hardware
Typ. (6X)
26-3/4"
6"
18-1/2"
19"
Pad Mount Bracket