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SECTION
11 MAINTENANCE, WARRANfl
AND SERVICE
INFORMATION
'l
1.1
Preventative Maintenance Program
A
periodic
maintenance
program
is essential
to
assure
Breaker
and
Switchgear reliability and
integrity. Periodic maintenance,
including testing,
inspection, adjustment, and repair should be
performed
on both the Circuit
Breaker and the
Switchgear
Assembly. For normal operating condi-
tions, a minimum
periodic
interval of
12 months is
recommended.
However,
additional
factors, such
as equipment age, state of repair,
general
condi-
tion, local operating environment,
number of
annual
cycles, etc. must be considered
in deter-
mining an
effective maintenance interval.
1 1 .2 Breaker Maintenance
lnstallation of a
Digitrip RMS Retrofit Kit on an
existing
Circuit Breaker does not alleviate
the
user
from maintaining
the
Circuit
Breaker in
good
operating
condition. The Digitrip
RIMS Trip
System
will
greatly
enhance
the capability of the Circuit
Beaker to reliably and accurately detect and
initiate a
trip in
the event of an
overcurrent condi-
tion or fault. However, the ability of
the Breaker to
trip and clear
the fault is directly dependent on the
operating condition of the Breaker.
The user should continue
to follow the applicable
instructions and
procedures provided
by the
Breaker manufacturer and
incorporate them into a
periodic preventative
maintenance
program.
The
following
items
are
not all inclusive, but should be
an
integral
paft
of such a
program:
1. Cleanliness:
Breaker moving
parts,
insulation,
and current
carrying
pads
should be kept clean
from dust, did, and sludge.
2.
Lubrication: The Breaker operating mechanism
should open
(trip)
and close
properly
and not
stick,
bind, or
jam.
The Breaker should be
lubricated as
required
according
to the
manufacturer's recommendations.
3. Contact Condition
and Adjustment: Breaker
moving and stationary arching and
main
contacts
should be in
proper
adjustment, in
good
condition, and
free from burning and
pitting.
Breaker
primary
and secondary
disconnecting contacts should
be in
good
condition.
4. General Condition and
Repair: Breaker
hardware should be tight and
retaining rings
intact.
Worn out
parts
should be replaced or
repaired. Electrical connections and
wire
insulation should be sound
and free from
evidence
of overheating.
5. Digitrip
RMS Trip Systern.' Section 8
provides
recommended testing
procedures
for Digitrip
RMS Trip
System.
11.3 Warranty
Procedure
Digitrip RMS Retrofit Kits include a limited
warranty
for
components
for one
(1) year
from
the
date
of shipment. ln the event of a
warranty
problem
with
a
Retrofit Kit component contact
Cutler-Hammer
by the channel through which
the
Retrofit Kit was
purchased.
Contact
the Cutler-
Hammer Retrofit Kit distributor,
representative,
or installer
(as
applicable)
and
provide
the follow-
ing information:
1 . Original order number by
which the kit
component
was
purchased:
2. Part description;
3. Part catalog and/or style
number;
and
4.
Complete
description of the
problem.
lf the
problem
is covered under warranty,
instruc-
tions will be
provided
for obtaining a component
replacement or
for returning the component
for repair.
11.4 Digitrip RMS Trip Unit Warranty
Digitrip RMS Trip Units are
factory
sealed and
are
not field serviceable.
Breaking the factory seal,
opening
the Trip Unit, and tampering
with the
internal components
will void any warranty. ln the
event of a
problem
with the Trip Unit, contact
your
local Cutler-Hammer
representative
per
the
instructions
provided
in 11-3 above.
Elf€ctiv€ 9/01
EtT.il
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