Miller PORTA-MIG Руководство пользователя - Страница 21
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TC-049 919-C
Figure
4-1.
Installation Of
Components
3.
Route end of
interconnecting
cord with
four-pin
Amphenol plug through
lead
access
hole
at
wire
spool
end of
case
(see
Figure
4-1).
Connect
plug
to
receptacle
mounted
on rear
of control box
as
follows:
align keyways,
insert
plug,
and
rotate
threaded collar
fully
clockwise.
4.
Connect
remaining
14-pin Amphenol plug
of
in
terconnecting
cord
to
the 115 volts
ac/contactor
control
receptacle
on
the
welding
power
source
as
follows:
align keyways,
insert
plug,
and
rotate
threaded collar
fully
clockwise.
B.
Shielding
Gas
Hose
1
-
Obtain necessary
length
of
shielding
gas hose
with
a
3/16
in.
(4.8 mm)
inside diameter.
2.
Route gas hose from gas
supply through
lead
ac
cess
opening
on rear
of wire feeder
case,
and
connect
hose
to
barbed gas
input fitting (see
Fig
ure
4-1).
4-5.
DRIVE ROLL INSTALLATION
(Figure 4-1)
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 mak
ing
internal connections.
Open
feeder
case
according
to
Section
4-2
before
beginning
this
procedure.
Close and
secure case
when
procedure
is
done.
LockoutJtagging
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.
Upon
installation,
or as a
result of
changes
in
the wire
size
and
type,
it is
necessary
to
install the
required
drive
rolls.
IMPORTANT:
Base selection of drive rolls upon the
following
recommended usages:
1.
V-Grooved
rolls for hard wire.
2.
U-Grooved
rolls for soft and soft shelled cored wires.
3.
U-Cogged
rolls for
extremely
soft shelled wires
(usu
ally
hard
surfacing types).
4.
Split
V-Knurled rolls
for
hard shelled cored wires.
5.
Drive roll
types
may be mixed
to
suit
particular
re
quirements (example:
V-Knurled roll
in
combination
with
U-Grooved).
Having
selected the
appropriate
drive rolls and wire
guides,
proceed
as
follows:
IMPORTANT: Inlet Wire Guide
Components,
as
shown
in
Figure
4-2,
are
standard
equipment
and
can
handle a/I
applicable
wire sizes for this unit without
being changed.
B.
Drive Roll Installation
(Figures
4-2
and
4.3)
1
-
Loosen pressure
adjustment
knob,
and
pivot
free
of
cover.
2.
Pivot gear
cover
away
to
expose pressure gear.
3.
Loosen and
remove
the three
securing
screws on
each
gear.
4.
For
one-piece
drive rolls: slide
a
drive roll
onto
the
drive gear and pressure gear
with
holder
aligned
and
secure
with
screws.
To
ensure
proper
gripping
of
U-cogged
drive
rolls,
install all rolls either
showing
the side with slots
or
showing
the side without slots.
Line up the
blunted teeth
on
the pressure gear rolls
directly
over
the spaces between the teeth
on
the drive
gear roll.
5.
For
split
drive rolls:
align
holes
on
each
pair
of
split
drive
rolls,
insert
a
securing
screw, and
slide
a
drive roll
onto
the drive gear and pressure gear
with
screw
in line with
one
of the threaded holes.
Insert
remaining
screws
and
tighten.
IMPORTANT: Both
one-piece
and
split
drive rolls
are
of
the double usage
type.
When the grooves become
worn,
reverse
the
one-piece
rolls
or reverse
the
split
roll halves
to
locate the unused
grooves
in
position
to
feed the wire.
IMPORTANT: The
alignment
of the wire
drive
assembly
is
factory
set.
If the wire
guide(s)
is
not centered to
feed
wire
straight
between pressure and drive rolls
and
in
the
drive roll
groove, refer
to
Section
7-3 for
alignment
in
structions.
Interconnecting
Cord
Receptacle
Control Box
Cable
Side
Access
Welding
Wire
Terminal Location
Door
Stub Liner
OM.1220
Page
15