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9-2. Welding Polarity
There are "+" (positive) and "
-
" (negative) weld
output terminals.
Refer to the table below to select a polarity
corresponding to the work you are performing.
<Note>
Use the polarity indicated for the welding rods
being used if so indicated.
When welding with 2 persons using different polarities for the same base material, a
single worker must not hold 2 holders because the voltage between the 2 holders
could become high and there may be a danger.
(1) Shielded Metal Arc Welding, Gouging, Scratch Start TIG
(2) Semi-automatic Arc Welding (MIG, MAG, Self-shielded)
9-3. Welding Cable Connection
Warning: Electric Shock
Be sure to stop the engine whenever touching Weld output terminals such as when
installing or removing welding cables.
1)
Stop the engine.
2)
Install the welding cables, crimped terminals, welding rod holders (or wire feeder)
and earth fittings.
3)
Connect the welding cables to the weld terminals. (Refer to the following table
explaining the welding cable connection locations.)
4)
Close the terminal covers.
Polarity
Rod
Indication
Applications
Connecting Method
Straight
Polarity
DC
–
Shielded metal arc welding of
structures and similar items
Scratch Start TIG Welding
+ (positive) terminal
: Earth (Base material)
- (negative) terminal
: Holder (welding rod)
Reverse
Polarity
DC+
Shielded metal arc welding of
laminates, weld overlays, stainless
steel and similar materials
Gouging
+ (positive) terminal
: Holder (welding rod)
- (negative) terminal
: Earth (Base material)
Polarity
Wire
Indication
Applications
Connecting Method
Straight
Polarity
DC
–
Self-shielded Arc Welding
+ (positive) terminal
: Earth (Base material)
- (negative) terminal
: Torch (wire)
Reverse
Polarity
DC+
MIG Welding
,
MAG Welding
Self-shielded Arc Welding
+ (positive) terminal
: Torch (wire)
- (negative) terminal
: Earth (Base material)
Terminal Cover
Weld Terminals
Welding Rod
Crimped
Terminal
Earth Fitting
Welding Rod Holder
Semi-automatic Wire Feeder
Wire Feeder
Crimped Terminal
Weld Terminals
A
Weld Terminals
B
[
–]
[+]
[
–]
[+]
Summary of Contents for DGW400DMK
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