Miller PORTA-MIG Panduan Pemilik - Halaman 28

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Halaman Cetak
Miller PORTA-MIG Panduan Pemilik
7-2.
ROUTINE MAINTENANCE
Every
six
months,
inspect
the gun,
hoses,
and cables. If
IMPORTANT:
Every
six months
inspect
the labels
on
this unit for
legibility.
All
precautionary
labels
must
be
maintained in
a
clearly
readable
state and
replaced
when
necessary. See
the Parts List for
part
numbers
of
precautionary
labels.
Table
7-1.
Maintenance Schedule
Frequency*
Maintenance
Every
month.
Units
in
heavy
service
environ
ments:
Check
labels, hoses,
and
cables;
clean internal
parts
and drive rolls.
Every
6 months.
Check
all labels
(see
IMPORTANT
block, Section
7-2). Inspect
gun
and cables
(see
Section
7-2B).
Clean
drive
rolls
(see
Section
7-2C).
*Frequency
of service is based
on
units
operated
40
hours per week. Increase
frequency
of maintenance if
usage
exceeds 40 hours per week.
a
WARNING: ELECTRIC
SHOCK
can
kill.
Do
not
touch live electrical
parts.
Shut
down wire feeder and
welding
power
source,
and disconnect
input
power
employ
ing lockout/tagging
procedures
before
in
specting, maintaining,
or
seivicing.
Open
feeder
case
according
to
Section
7-1
before
beginning
this
procedure.
Close and
secure case
when
procedure
is
done.
Lockout/tagging procedures
Consist of
pad
locking
line
disconnect switch
in open
position,
removing
fuses
from fuse box,
or
shutting
off and
red-tagging
circuit breaker
or
other disconnect
ing
device.
MOVING PARTS
can cause
serious
injury.
Keep
away from
moving
parts.
HOT SURFACES
can cause severe
burns.
Allow
cooling period
before
servicing.
A.
Internal
Cleaning
a
WARNING: Read and follow
safety
informa
tion
at
beginning
of entire Section
7-2
before
proceeding.
Every
six months blow
out
or vacuum
dust and dirt from
the inside of the wire feeder. Remove the
outer
enclo
sure,
and
use a
clean,
dry
airstream
or vacuum
suction
for
the
cleaning
operation.
If
dusty
or
dirty
conditions
are
present,
clean the unit
monthly.
B.
Inspection
And
Upkeep
a
WARNING: Read
and follow
safety
informa
tion
at
beginning
of entire
Section
7-2
before
proceeding.
dusty
or
dirty
conditions
are
present,
inspect
the unit
monthly.
Inspection
should consist of the
following:
1.
Inspect
gun for broken
areas,
cracks,
and
loose
parts;
tighten,
repair,
and
replace
as
required.
2.
Repair
or
replace,
as
required,
all hose and
cable;
give
particular
attention
to
frayed
and cracked in
sulation and
areas
where hose and
cables
enter
equipment.
3.
Remove
grease
and
grime
from
components,
moisture
from
electrical
parts
and cable.
a
CAUTION: FLYING DIRT
AND METAL
CHIPS
can
injure
personnel
and
damage equip
ment.
Point gun liner
only
in
a
safe direction away
from
personneland equipment
when
cleaning
with
compressed
air.
4.
Blow
out
the gun wire
guide
liner with
com
pressed
air when
changing
wire. This
will
remove
any metal
chips
and
dirt that may
have
accumu
lated.
C.
Cleaning
Of Drive Rolls
a
WARNING: Read
and follow
safety
informa
tion
at
beginning
of entire Section 7-2 before
proceeding.
MOVING PARTS
can cause
serious
injury.
Keep
away from
moving
parts.
HIGH ROTATIONAL SPEED
can cause
dam
age
to
drive rolls and
injure personnel.
Do
not
allow drive rolls
to rotate at
high
speed
if
compressedair
is used for
cleaning
the drive
roll
assembly.
It is necessary
to
remove
the drive rolls for proper clean
ing
of the wire grooves
(see
Section
4-5)
for
removal and
installation
instructions).
Use
a
wire brush
to
clean rolls.
IMPORTANT: Failure
to
properly
maintain the drive roll
can
result
in
a
buildup
of wire
particles
which will de
crease
the
efficiency
of
the wire
feeding
operation.
1.
Remove
the three drive roll
securing
screws
from
each drive
roll,
and
remove
drive rolls
(see
Sec
tion
4-5).
2.
Using
a
wire
brush,
remove
the
buildup
of wire
particles
in the
wire grooves.
3.
Reinstall drive rolls
according
to
Section
4-5.
4.
Resume
operation.
7-3.
ALIGNING DRIVE ROLLS AND WIRE
GUIDES
a
WARNING:
ELECTRIC
SHOCK
can
kill.
Do
not
touch live electrical
parts.
Shut
down wire feeder and
welding
power
source,
and disconnect
input
power
employ
ing lockout/tagging
procedures
before
in
specting, maintaining,
or
servicing.
OM-1220
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