S&C Instruction Sheet 1045M-510
27
Installing the Reciprocating Switch Operator
WARNING
Before attempting to access an existing installation, carefully check 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 decoupled 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.
The sequence of installation steps outlined in this chapter must be followed to
ensure a safe and successful switch-operator installation.
STEP 2.
De-energize or jumper the switch while installing the switch operator.
STEP 3.
Move the switch to the
Open
position before removing the manual control
handle. Remove the existing manual switch operator handle from the pole.
Leave the existing vertical switch operator rod in place.
STEP 4.
Mount the switch operator on the pole at the proper height and alignment.
The
switch operator must be mounted immediately underneath the vertical control
rod. The end of the control rod must be approximately 12 inches (305 mm) below
the top of the switch operator housing when the switch is in the open position.
The vertical position of the switch operator on the pole can be adjusted to allow
for this requirement or, if necessary, the switch operator rod can be cut shorter.
It is essential to mount the switch operator in a manner that will resist
loosening as the mounting surface ages. The mounting instructions below are
only recommendations to be used along with locally-accepted practices.
Mount the switch operator (see Figure 15 on page 28) to the pole with
⅝
-inch through-bolts and flat washers as follows:
(a) Before mounting the switch operator, drill two horizontal holes in the pole for
the mounting bolts. Each hole should pass through the center line of the pole.
Position the upper hole 6 inches (152 mm) below the desired height of the top of
the switch operator enclosure. The lower hole must be 12 inches (305 mm) below
the upper hole. These holes are for two
⅝
-inch diameter steel bolts. When laying
out bolt hole positions and drilling the holes, work from the switch operator side
of the pole. This ensures the bolt hole spacing at the switch operator will be
correct even if the drill bit drifts off center while going through the pole.
NOTICE
S&C reserves the right to change and update its products on an ongoing basis.
Please double check all dimensions and hole positions against the actual switch
operator being installed before drilling any holes.
