S&C Instruction Sheet 765-500
11
Installation
Figure 4. Attaching uppermost vertical operating pipe to switch for upright
mounting configuration.
Universal coupling
Vertical operating
pipe
Figure 5. Attaching uppermost vertical operating pipe to switch for
triangular mounting configuration.
Universal
coupling
Vertical
operating pipe
If desired, a crossarm brace (user-furnished)
may be attached to the base for switches in
the upright mounting configuration. Mounting
brackets for crossarm braces must be specified
separately. Consult your nearest S&C Sales
Office for details.
Installing the Vertical Operating Pipe
Step 5
S&C recommends making up each coupling as
work progresses. When installing operating pipe
in a rigid coupling, make certain that the cutting
tip of the piercing set screw does not protrude
through the body of the coupling. Torque the
clamp bolt to final tightness. Then, tighten
the piercing set screw, piercing the pipe, and
continue turning until a firm resistance is felt.
NOTICE
Installing Piercing Set Screws
This equipment uses piercing set screws
to couple the operating mechanism to the
operating pipe, and to provide stability to
couplings joining one or more lengths of
pipe.
Before assembling a coupling, back the
piercing set screw out of the coupling so
that the tip does not protrude into the body
of the coupling. This ensures that the cou-
pling’s clamp screws can be fully-tightened.
After tightening the clamp bolts to their
final torque, tighten the set screws to pierce
and/or crimp the pipe.
Step 6
Locate the universal coupling that is shipped in
the carton of switch ED parts. Attach the univer-
sal coupling to the rotating shaft of the toggle
mechanism using the
¹⁄₂
-inch stainless-steel pin,
flatwasher, and cotter pin provided. See Figure
4 or 5, as applicable. Install the uppermost sec-
tion of predrilled vertical operating pipe on the
universal coupling as shown. Then, secure the
vertical operating pipe to the universal coupling
using the
¹⁄₂
—13
2
¹⁄₂
bolt, flatwasher, and nut
provided.
If only one vertical pipe section is
used, omit Steps 6 through 9 and proceed to
Step 10.
Summary of Contents for Omni-Rupter
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