Voltage/Amperage Control - Miller TRAILBLAZER 302 AIR PAK Owner's Manual

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A complete Parts List is available at www.MillerWelds.com

6-3. Voltage/Amperage Control

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OM-229 930 Page 32
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1 And 2 Displays
Displays show weld process infor-
mation (voltage and amperage) and
maintenance information (hour
meter, oil change countdown, or
RPM).
Meter Weld Functions: In Wire
modes, Voltmeter displays preset
weld voltage when not welding. Me-
ters display actual voltage and am-
perage when welding and for five
seconds after welding has stopped.
In Stick and TIG modes, Voltmeter
reads ON and Ammeter displays
preset amperage when not weld-
ing. Meters display actual voltage
and amperage when welding and
for five seconds after welding has
stopped.
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See Section 12-1 for additional
display code information.
3 Voltage/Amperage Control
Use control to select weld voltage
or amperage. Control may be ad-
justed while welding.
With Process/Contactor switch in
any Stick or TIG setting, use control
to adjust amperage. With Process/
Contactor switch in any Wire posi-
tion, use control to adjust voltage.
When a remote voltage/amperage
control is connected to Remote re-
ceptacle RC4, control sets the
maximum amperage in Stick and
TIG modes, but has no effect in MIG
modes.
For models with Battery Charging,
control selects charge amperage.
4 Polarity/AC Switch
NOTICE − Do not switch while
welding or under load.
Use switch to select DC Electrode
Negative or DC Electrode Positive
weld output; or AC weld output.
5 DC/Battery/AC Switch
NOTICE − Do not switch while
welding or under load.
Use switch to select DC weld out-
put, Battery Jump or Charge, or AC
weld output.
DC weld polarity is determined by
weld cable connections. Manually
change weld cables to change po-
larity.
Ref. 804 857-C / Ref. 229 219-C /Ref. 245 069-A