TC-9 Viper ™ Gate System
Residential Sliding Gate Operator
Installation Instruction
Concrete Pad
The concrete pad for the TC-9 operator should be approximately 24” x 12” x 18” deep.
This will insure a firm stable base to support the torque required in opening/closing the
gate. The pad may be installed at ground level, or up to 3” above the finished grade. Be
sure the base concrete pad is level. The pad should be positioned so it does not interfere
with the gate movement.
You can use the concrete anchors provided with the operator to secure the Platform Base
to the concrete pad. They consist of 3-¾” Anchor Bolts (4), Anchors, Washers and Nuts
(in the same bag with the Manual Clutch Release Key). Anchors must be set into the
concrete at the time of pouring, or you can use 5/16” Lead Sink anchors and lag screws
(not supplied) by drilling four holes into the concrete pad after it has set up.
Operator Base
Position the Viper TC-9 platform on top of the pad, then mark the hole positions (3” On-
Center) which will allow ±¾” of adjustment for proper alignment of the Operator with
the correct distance from the gate, See Figure 1, Platform Base Dimensions. This
alignment is very important so take care in measuring. The platform base should be not
less than 2-¼” from the gate, See Figure 2, Viper TC-9 Configuration Diagram. Again,
be sure the base is properly leveled. Use washers as shims under the platform to assist in
leveling the base.
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