S&C Instruction Sheet 719-501 13
Operation
STEP 4�
To return the manual operating handle to its
Storage position, pull the latch knob and pivot
the handle approximately 90 degrees. The handle
will then be disengaged from the switch operator
and may be rotated freely in either direction to its
Storage position. Complete the handle storage
by pivoting the operating handle backward
approximately 90 degrees until it latches in the
Storage position.
Note: The manual operating handle may be disengaged
from the switch operator mechanism at any position of the
handle. However, if the switch operator and circuit-switcher
are at any position between the fully Open and fully Closed
position when the manual operating handle is placed in
the Storage position, and the motor circuit fuseholder is
inserted, the switch operator will automatically move to
the Open position (because the switch operator control
circuit is designed to allow an electrical closing only from
the fully Open position of circuit-switcher).
Note: The handle may be padlocked in its Storage position.
Post Operating Inspection
Do not assume the switch operator position necessarily indi-
cates the Open or Closed position of the circuit-switcher.
Upon completion of an Opening or Closing operation (elec-
trical or manual), make sure the following conditions exist:
•
The switch-operator position indicator displays “Open”
or “Closed” to indicate the switch operator has moved
through a complete operation. See Figure 1 on page 7.
Also, if furnished, note the position-indicating lamps.
See Figure 2 on page 8.
• The circuit-switcher position indicator, located on the
switch-operator output shaft, is in agreement with the
switch-operator position indicator. See Figure 1. Both
indicators should show “Open” or “Closed.”
•
The circuit-switcher disconnect blade on each pole-unit
is fully open or fully closed.
Then, tag and padlock the switch operator in accor-
dance with standard system operating procedures. In all
cases, make sure the switch operator is padlocked before
“walking away.”
Correct operation of the circuit-switcher depends on
charging and latching the stored-energy source within
each brain as the disconnect blades move to the fully Open
position and the interrupters close. The interrupter target
located on the side of each brain housing appears yellow
when the interrupter is open. The target appears gray
(normal) when the interrupter is closed.
Because the interrupters are closed as the circuit-
switcher blades move to the fully Open position, the target
appears yellow only briefly during the Opening operation.
The target should never appear yellow when the circuit-
switcher is in the fully Open or fully Closed position
Restoring the Switch Operator and Circuit-
Switcher to Normal Operation
To ensure the switch operator is ready for normal power
operation of the circuit-switcher by remote automatic or
supervisory control, make sure the following conditions
exist:
• The selector handle is in the Coupled position.
•
The manual operating handle is in its Storage position.
•
The two-pole pull-out fuseholders for the motor, space-
heater, and (if applicable) shunt-trip circuits are inserted.
• The pushbutton protective cover is closed.
• The switch operator is tagged and padlocked in accor-
dance with standard system operating procedures
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