SECTION 5: OPERATION
AIR N ARC
®
300 SERIES ALL-IN-ONE POWER SYSTEM
®
PAGE - 58
090034-OP_r0
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: ELECTRODE SPECIFICATIONS
for selecting an electrode.
3. Place the ground clamp on the work piece
and insert the appropriate welding rod into
the electrode clamp.
4. On the control panel, place the CC/CV switch
in CC mode. Place the DC Charger/Welder
switch in welder mode.
5. Adjust the power dial to the appropriate
amperage setting for the material and the
electrode being used. (See
Table 5B:
ELECTRODE SPECIFICATIONS
for
electrode amperage ratings). At anytime
during welding, the power dial may be
adjusted to the desired amperage level.
6. When you strike the electrode against the
material being welded, the motor will go to
full speed and deliver the selected amperage
through the electrode. Now you may begin
to weld.
7. After a weld has been completed, and there is
no contact between the electrode and the
metal for 30 seconds, the motor will return to
bypass.
NOTE
For electrode striking technique, consult
Section A.7, Electrode Ignition Procedure
in Appendix A.
TABLE 5B: ELECTRODE SPECIFICATIONS
METAL THICKNESS
ELECTRODE SIZE
WELDING AMPERES
1/16-1/8
3/32
50-90
1/8-1/4
1/8
90-140
¼-3/8
5/32
120-180
3/8-1/2
3/16
150-230
NOTE
If a longer welding lead is desired,
optional 25 and 50 ft. lead segments may
be purchased from Vanair
Manufacturing, Inc. for a maximum lead
length of 100 ft.
