AIR N ARC
®
300 SERIES ALL-IN-ONE POWER SYSTEM
®
SECTION 5: OPERATION
090010-OP_r0
PAGE - 49
KEY
DESCRIPTION
A
DIGITAL READ OUT DISPLAY
B
RANGE:
30-300 AMPS
15-40 VOLTS
Figure 5-3: Variable Power Dial
Adjustment
A
B
5.4 OPERATING THE WELDER
Consult
Figure 5-3
. The
variable power dial
adjusts the
welder amperage (30 to 300 amps), or voltage (15 to 40
volts) for the desired weld heat. Turning the power dial
clockwise increases the amperage or voltage, and
turning the power dial counterclockwise decreases the
amperage or voltage. The power dial may be adjusted
while welding.
For visual depiction of instrument panel adjustments
concerning the DC Welder/Charger Mode functions,
consult
Appendix B
,
Section
B.4.1
through
Section
B.4.6
.
5.4.1 WELDER OPERATING PROCEDURE
5.4.1.1 CC (CONSTANT CURRENT) MODE
CC (Constant Current) Mode is commonly referred to as -
Stick Welding, Arc Welding, or Shielded Metal Arc
Welding (SMAW)
1. With the engine shut off, insert the twist lock
connections of the ground clamp and the
electrode holder cables into the welder
connection ports on the control panel. For
Direct Current Electrode Positive (DCEP)
connect the electrode holder to the positive
(+) port, and the ground clamp to the
negative (–) port. For Direct Current
Electrode Negative (DCEN) connect the
electrode holder to the negative (–) port, and
the ground clamp to the positive (+) port.
2. Select the appropriate electrode for the
material and process being performed.
See
Table 5B
for selecting an electrode.
3. Place the ground clamp on the work piece
and insert the appropriate welding rod into
the electrode clamp.
4. Start the engine (
See Section 5.2, Engine
Start-up and Shutdown Procedure
).
WARNING
Before attempting any welding
procedure, the operator must be aware
of general safety practices, and
particularly those pertaining to welding,
as found in Section 1.4 of this manual.
WARNING
Do not rely on the thermal overload
circuit breakers on the generator to
protect personnel, power tools, or the
generator. The thermal overload circuit
breakers on the generator require time to
overheat when the generator is operating
in an overload condition — they do not
provide instant protection against short
circuiting or overload conditions. Always
use GFCI protected extension cords and
power strips when using the generator.
NOTE
If a longer welding lead is desired,
optional 50 ft. lead segments may be
purchased from Vanair Manufacturing,
Inc. for a maximum lead length of 100 ft.
