Powered by Safety
®
60
Recommended Renewal Parts and Replacement Procedures
PowlVac
®
STD Vacuum Circuit Breaker
IB-60201
d. Bolt the new assembly in place and
reconnect it to the wiring harness. No
adjustment is required.
e. Reassemble the connecting rod and
main closing spring, if previously
removed.
f. Trip the circuit breaker several times
electrically to ensure that secondary
shunt trip coil assembly is functioning
properly.
g. Replace the front cover.
6) Undervoltage Device Assembly (UV)
Refer to
SM-1800
Undervoltage Assembly
for
replacement and installation procedures.
7) Charging Motor Assembly
This assembly is located lower right hand
side of the mechanism (Figure 2, o).
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
charging motor assembly:
a. Remove the front cover of the circuit
breaker.
b. Disconnect the charging motor
assembly from the wiring harness.
c. Remove the two bolts holding the
motor mounting bracket to the base
pan and slide the motor to the right,
disconnecting the motor shaft from the
mechanism, and lift the motor out.
d. Lubricate the end of the shaft of the
new charging motor generously with
Rheolube 368A grease.
e. Position the new assembly in the circuit
breaker, making sure that the pin on the
end of the drive shaft engages the slot
in the mechanism shaft.
f. Bolt the assembly to the base pan and
connect it into the wiring harness.
g. Operate the circuit breaker several
times to ensure that the charging motor
assembly operates smoothly.
h. Replace the front cover.
8) Anti-Pump Relay Assembly
This assembly is located near the top of the
mechanism, to the right of the opening
springs (Figure 2, a).
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
anti-pump relay assembly:
a. Remove the front cover of the circuit
breaker.
b. Disconnect the wires from the
anti-pump relay assembly, being
careful to note which wires go to which
terminal.
c. Remove the upper mounting screw and
loosen the lower mounting screw and
lift relay assembly off and remove from
the circuit breaker.
d. Prior to installing new relay, reconnect
all wires to the proper terminals.
