18
S&C Instruction Sheet 1045M-510
Installing the Rotating Switch Operator
GROUND LUG
#14 - #2 AWG
1.375 (35)
ENTRY FOR INCOMING
POWER CONNECTIONS
COMMUNICATIONS
CONNECTION
(WHEN ORDERED)
SENSOR
CONNECTIONS
(WHEN ORDERED)
2 3/4
(70)
8 1/8
(206)
4 X DRAIN
TEMPERATURE
SENSOR
2 1/8
(54)
6 (152)
Ø
Figure 12. The bottom view of switch operator showing the ground lug, dimensions are
inches (mm).
NOTICE
The switch operator is designed to minimize problems caused by minor variation
in operator-switch geometry due to age and environmental effects. However, if it is
not securely fastened to the pole, excessive movement of the switch operator can
result in incomplete switch operation and potentially serious damage to the switch
mechanism.
Periodic inspection and maintenance of switch operator mountings and control
linkages is essential for identifying problems.
STEP 8.
Ground the enclosure.
Use the ground lug that is located on the bottom of the
switch operator enclosure (see Figure 12) to ground the enclosure. The ground
lug will accommodate up to #2 copper or aluminum, solid or stranded wire.
NOTICE
Proper operation of the switch requires that all of the blades move in unison and
that all blades contact their mating surfaces simultaneously during operation.
Failure to make proper contact can result in switch failure.
STEP 9.
The switch operator may contain communications equipment (radio, modem,
etc.). Toggle the faceplate REMOTE/LOCAL switch to
Local
state to ensure the switch
operator does not carry out remote switching commands. Remote switching must be
disabled until after the software is set up for this switch operator installation.
STEP 10.
Remove the ac line fuse and make sure the dc breaker is off. Inside the switch
operator enclosure, remove the 10-A ac line fuse and make sure the 24-volt dc breaker is
off.
CAUTION
Leave the 10-A ac line fuse out and the dc breaker off until instructed otherwise in
the installation process.
STEP 11.
If necessary, adjust the tap position on the spiral-wound load resistor. See
“
Adjusting the Tap Position on the Load Resistor” on page 24 for details.
STEP 12.
Bring ac power to the switch operator.
(a) Locate the conduit hole that accepts a 1-inch (25-mm) conduit adapter on the
bottom of the floor of the switch operator enclosure. See Figure 12.
(b) Using conduit, bring an appropriate, de-energized 120-Vac power line to the
switch operator enclosure.
