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52
Maintenance
PowlVac 38™ ARM 3000A Series 4
Vacuum Circuit Breaker
01.4IB.65131
Ch 6 Recommended Renewal Parts and
Replacement Procedures
A. o
rDerInG
I
nStructIonS
1. Order Renewal Parts from Powell at
or call 1.800.480.7273.
2. Always specify complete nameplate
information, including:
• Breaker Type
• Serial Number
• Rated Voltage
• Rated Amps
• Impulse Withstand
• Control Voltage (for control devices and
coils)
3. Specify the quantity and description
of the part and the instruction bulletin
number. If the part is in any of the
recommended renewal parts tables, specify
the catalog number. If the part is not in
any of the tables, a description should be
accompanied by a marked illustration from
this instruction bulletin, a photo or simply
submit a sketch showing the part needed.
B. r
ecoMMenDeD
r
eneWAl
p
ArtS
A sufficient amount of renewal parts should be
stored to enable the prompt replacement of
any worn, broken or damaged part. A sufficient
amount of stocked parts minimizes service
interruptions caused by breakdowns and saves
time and expense. When continuos operation
is a primary consideration, a larger quantity of
renewal parts should be stocked depending
on the severity of the service and the time
required to secure replacements parts.
Since parts may be improved periodically,
renewal parts may not be identical to the
original parts.
recommended spare parts to be carried in
stock by the user. The recommended quantity
is not specified. This must be determined
by the user based on the application. As a
minimum, it is recommended that one set of
parts be stocked per ten circuit breakers or less.
Powell recommends that only qualified
technicians perform maintenance on these
units. Refer to the
in
the front of this instruction bulletin. If these
circuit breakers are installed in a location
where they are not maintained by a qualified
technician, a spare circuit breaker should be on
site ready for circuit breaker replacement. The
malfunctioning unit can then be returned to
the factory for reconditioning.
c. r
eplAceMent
p
roceDureS
This section includes instructions for replacing
the parts recommended as renewal parts.
Before attempting any maintenance repair
work, take note of the safety practices outlined
of this instruction bulletin.
!
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. When any maintenance procedure
requires the opening or closing of the circuit
breaker or the charging of any of the stored
energy mechanism springs, exercise extreme
caution to ensure that all personnel, tools, and
other miscellaneous objects are kept clear of
the moving parts of the charged springs.
