S&C Instruction Sheet 1045M-510
11
Installing the Rotating Switch Operator
Installation
STEP 1.
Read and make sure you understand the following warning before beginning
installation or operation of this equipment.
WARNING
Before attempting to access an existing installation, check carefully for visible
or audible signs of electrical or physical malfunction (do this before touching or
operating the switch operator or any other part of the installation). These
warning signs include such things as smoke, fire, open fuses, crackling noises,
loud buzzing, etc. If a malfunction is suspected, treat all components of the
installation, including the switch operator and associated mounting hardware, as if
they were elevated to primary (high) voltage.
This switch operator uses two 12-Vdc batteries that are capable of short-circuit
currents exceeding 2,000 amps. Electrical fires and physical harm can be caused
by allowing the terminals of the batteries to be shorted. Handle the batteries
with care and be sure to fasten the batteries securely to the enclosure during
installation. Use insulated tools to tighten/loosen the battery connections, and turn
off the 24-volt circuit breaker before installing or removing the batteries.
The 6801M Switch Operator is capable of generating tremendous torque and
speed. Make sure the 24-volt dc circuit breaker is off before putting your hands
or other body parts near the actuator shaft. Be sure the switch operator is
completely de-coupled from the switch and stand clear before executing the
hardware diagnostics.
Never attempt to run the switch operator diagnostics with the operator coupled to
a switch. The diagnostics will not run properly, and the switch will open and close
repeatedly and could interrupt service to customers.
You must follow the sequence of installation steps outlined in this chapter to ensure
a safe and successful switch operator installation.
STEP 2.
For retrofit installations, de-energize or jumper the switch while installing the
switch operator.
STEP 3.
Remove the existing manual SWITCH OPERATOR handle from the pole. Move
the switch to the
Open
position before removing the manual control handle.
Leave the existing vertical switch operator rod in place.
STEP 4.
Make sure the vertical operating pipe that connects the operator to the switch
is straight when it is being guided down the pole.
The switch manufacturer supplies bearings for support, universal joints
for minor out-of-alignment conditions in the vertical operating pipe, and
straight couplings to join two pieces of vertical operating pipe that are
in line with no angular misalignment, and it is best if this pipe is fairly
straight when mounted on the pole. For S&C Alduti-Rupter Switches, cut
pipe lengths so there is about
¼
-inch (6-mm) gap between end of the pipe
and corresponding surface in any coupling or universal joints (refer to
Figure 3 on page 13 and Figure 4 on page 14). This prevents any jam-
ming that might result from pipe lengths that are too long. This
¼
-inch
(6-mm) gap applies to all joints in the vertical operating pipe. The pic-
tures show examples of where this gap is on all joint types. These
include universal joints and straight couplings. The joint shown is a
universal joint. Parts may not be exactly as shown. For S&C Omni-Rupter
Switches, provide
¼
-inch (6-mm) gap at the bottom of the bottom section only.
STEP 5.
Use piercing set screws or ribbed-neck bolts for all pipe couplings and
universal joints for connecting components.
For new switch installations, follow all manufacturer-recommended instructions when
installing the overhead switch. The following installation instructions are intended to
ensure optimal S&C 6801M Automatic Switch Operator performance.
