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2.
Remove
brushes.
3.
Examine
brushes. Replace
brushes
if
they
are
chipped
or
broken
or
if
less
than
1/4
in.
(6.4
mm)
of brush
material
remains.
4.
Install
brushes, and
secure with
caps.
10-5.
OVERLOAD PROTECTION
Circuit
breaker
CBl
provides
protection
to
the
feeder
circuits.
CBl
is
located
towards
the
front
of
the
unit,
be-
hind
the
left
case access
door.
If
the
motor
should
over
-
load
or
the circuit
fail,
the
breaker
would
trip
and
shut
down
the
wire
feeder.
If
CB1
opens,
correct
the problem
and
manually
reset the
breaker.
To
reset
CBl,
proceed
as follows:
1.
Unlatch and
open
left
case
access
door.
2.
Locate
CBl,
and
reset
(see
Figure
4-1).
3.
Close
and
secure
left
case
access
door.
S-21E
TM-1571
Page
27