Powell PowlVac IB-60201, Manual

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62 Recommended Renewal Parts and Replacement Procedures
PowlVac
®
STD Vacuum Circuit Breaker
IB-60201
11) Auxiliary Switch
The auxiliary switch is located on the lower
left front of the mechanism area
(Figure 2, n).
CAUTION CAUTION
!
Ensure that the control circuits are
deenergized and the circuit breaker is
deenergized, disconnected by means of a
visible break, and securely grounded. Do NOT
start to work on a closed circuit breaker or a
circuit breaker with the main closing spring
charged.
Perform the following steps to replace the
auxiliary switch:
a. Remove the front cover of the circuit
breaker.
b. Disconnect the wires from the auxiliary
switch, being careful to note which
wires go to which terminal.
c. Remove the “E” ring securing the
switch operating arm to the operations
counter linkage.
d. Remove the two screws holding the
auxiliary switch to its mounting bracket
and remove the switch.
e. Insert the new switch and attach it to
the mounting bracket with the two
screws removed in Step d .
f. Insert the operating arm of the
switch into the hole at the end of the
operations counter linkage and secure it
with the “E” ring removed in Step c.
g. Reconnect the wiring. Make sure
the wires are connected to the same
terminals from which they were
removed.
h. Verify the auxiliary spare contacts are
wired in accordance with the original
circuit breaker diagram.
i. Operate the circuit breaker electrically
several times to ensure the switch
functions properly.
j. Replace the front cover
12) Primary Disconnecting Device Spring
Assembly
This assembly is located at the outer end of
the primary disconnecting device.
a. Depress the spring support sufficiently
to allow keeper to be removed.
b. Remove the spring and the spring.
c. Slide the spring onto the spring
support, and place the spring support
in the appropriate slot in the primary
disconnecting devices.
d. Depress the head of the spring support
and instal the keeper in the end of the
spring support.
e. Release the spring slowly, allowing
keeper to seat properly.
Courtesy of NationalSwitchgear.com