Hobart Welding Products AIRFORCE OM-279 - Manuel (Page 18)

OM-279 Page 14
SECTION 3 – OPERATION
3-1. Front Panel Controls
1 Pilot Arc Switch
Use switch to control pilot arc.
Place switch in Expanded Metal position for
continuous pilot arc. Use while cutting ex-
panded metals only.
.
The Expanded Metal position keeps the
pilot arc in the circuit at all times. Life of
consumables will be significantly re-
duced while in Expanded Metal mode.
Place switch in Tip Saver position to provide
pilot arc output for arc starting only. Use Tip
Saver position in most applications to length-
en the life of the torch and its consumables,
and to obtain maximum cutting performance.
Torch trigger must be reset after every cut
while in Tip Saver mode.
2 Gas/Air Pressure Gauge
3 Output Control
Use control to select cutting output in am-
peres. Gas/air automatically flows at the set
pressure.
Use Gas/Air Set area of control range for set-
ting gas/air pressure (see Section 3-2).
4 Trouble Lights (see Section 4-2)
5 Ready Light
Ready light comes On when unit is On to indi-
cate that all safety shutdown systems are
okay. If Ready light does not come On, check
trouble lights.
6 Power Light
7 Power Switch
1
Ref. ST-190 676
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