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LA
WARNING
ARCING
can
damage
switch
contacts.
Do
not
change
Polarity
Switch
position
while
welding.
Arcing
inside
switch
can
damage
contacts,
causing
switch
to
fail.
)
I
Figure
4-8.
Polarity
Switch
(Optional)
Figure
4-9.
Voltmeter
And
Ammeter
(Optional)
Figure
4-10.
Sequence
Of
Shielded
Metal
Arc
Welding
(SMAW)
Figure
4-11.
Sequence
Of
Gas
Tungsten
Arc
Welding
(GTAW)
1
Polarity
Switch
1
Use
switch
to
select
weld
polarity.
~:)/~
\
SWITCH
(+)/L
I
ELECTRODE
~
-
ELECTRODE
NEGATIVE
.---.
POSITIVE
DO
NOT
SWITCH
UNDER
LOAD
1
Voltmeter
Voltmeter
displays
voltage
at
the
weld
output
terminals,
but
not
nec
essarily
the
welding
arc
due
to
2
cable
resistance,
poor
connec
tions,
etc.
2
Ammeter
Ammeter
displays
weld
amperage
output
of
unit.
Install
&
Select
Put
On
~\
\
\
Insert
)~~we~)__~
Connect
Electrode
Personal
Safety
)
Set
Controls
I
Electrode
)
Equipment
________________
Equipment
})
})
Into
Holder
______________
______________ ______________
______________
______________
Source
y
)
Begin
Welding
ssb7.1
9/92
1
Connect
)
I
High-Frequency
)
I
Tungsten
(See
Tungsten
I
I
Personal
Safety
~\
Install&
~\\
Install&Conneci\\
Select
Insert
~\
PutOn
)
Equipment
})
Unit
JJ
Section
7)
Into
Torch~,J~,J
Equipme~~,J
Turn
On
Turn
On
Turn
On
Begin
Weld~)
)
Shielding
Gas
I
High.Frequenc
Welding
Powe
________________
)
Unit
Source
________________
ssb8.1
12/92
OM-168
256
Page
12