9
2. Use the Close and Open pushbuttons on
the circuit breaker operating mechanism
(refer to Figure 3: Operator panel controls
on page 10) to first close, and then open
the circuit breaker contacts. Verify contact
positions visually by observing the OPEN/
CLOSED indicator on the circuit breaker.
3. In step 2, when the Close pushbutton was
pressed, the circuit breaker should have
closed, and the capacitors should have
recharged automatically. Upon closing,
the yellow LED should be on, followed by
the green LED when full capacitor charge
has been obtained. The yellow LED is off
when the green LED lights. The meaning
of the LEDs (105.1) on the controller
board:
a) Green LED indicates ready (energy
sufficient for OPEN-CLOSE-OPEN cycle).
b) Yellow LED indicates open possible
(energy sufficient for OPEN operation).
c) Red LED indicates error (energy not
sufficient for operation).
4. Perform the magnetic-actuator discharge
check.
a) Initial status: circuit breaker open.
b) Press red Open pushbutton (54.0).
c) Press black Close pushbutton (53.0).
d) Verify main contact status indicator
shows CLOSED.
e) Press red Open pushbutton (54.0)
again.
f) Verify main contact status indicator
shows OPEN.
5. De-energize the control power by opening
the control power disconnect device in
the relay and control compartment.
Remove the mechanism housing cover
sheet (60.1). Do not unplug connector
(106.3) from the capacitor boards, or
damage to the capacitor board or the
controller board may occur. Fast discharge
the capacitors (106.2) by unplugging the
connector (105.2) on the capacitor
controller board (105.0). During fast
discharge of the capacitors, a red LED on
each capacitor board will flash, indicating
that discharge is in process. The process is
complete when the red LED stops
blinking.
6. After the fast-discharge process is
complete, plug in the connector (105.2)
to the controller board (105.0).
Final mechanical inspections without
control power
1. Make a final mechanical inspection of the
circuit breaker. Verify the contacts are in
the OPEN position.
2. Check visually that the connectors (106.3)
for each capacitor board are firmly
connected. Do not disconnect these
connections.
3. Reinstall the mechanism housing cover
sheet (60.1).
4. Check for loose hardware.
NOTICE
Capacitor discharge plug (105.2)
Disconnect control power prior to removing or
replacing the capacitor discharge plug. Refer to
Figure 2 on page 7.
To discharge capacitors:
Disconnect control power to the circuit breaker
by opening the disconnect device (device 08 in
the typical schematic in Figure 14 on page 24)
located in the control compartment.
After control power is off, disconnect the
capacitor discharge plug (105.2) from the
controller board (105.0) to discharge capacitors.
To reconnect capacitors:
Disconnect control power to the circuit breaker
by opening the disconnect (device 08 in the
typical schematic in Figure 14 on page 24)
located in the control compartment.
Insert the capacitor discharge plug (105.2) (with
six pins) into the left-hand receptacle on the
controller board (105.0). Ensure that the plug is
properly seated and the plug position is level
with the power supply connection plug (105.5)
that is located to the right of the capacitor
discharge plug.
After the capacitor discharge plug is firmly
seated, reconnect control power to the circuit
breaker (device 08 in the typical schematic in
Figure 14 on page 24).
