Sequence Of Operation - Miller Electric OM-225A Owner's Manual

3-2. Sequence Of Operation

Install &
Put On Personal
Connect
Equipment
Equipment
Begin
Cutting
EXAMPLE Of Cutting Operation
Place drag shield on edge of metal, or allow
correct standoff distance – approximately 1/8
in (3 mm). For gouging, use 1/8 to 1/4 in (3 - 6
mm) standoff. Hold tip at about a 45 angle.
Be sure to use gouging consumables.
Adjust torch speed so
sparks go thru metal and
out bottom of cut.
If arc goes out while cutting, the arc outage detction circuit will
automatically restart the arc. There is no need to manually retrigger
the torch. This is useful for cutting perforated metal.
Do not clean torch by hitting it against a
hard surface. Hitting hard surfaces can
damage torch parts and stop proper opera-
tion.
Check Torch Tip,
Safety Electrode, And
Retaining Cup
The pilot arc starts immediately when trigger is pressed. If cutting is
not established within 5 seconds after trigger is pressed, pilot arc
goes out and trigger must be released and pressed again.
Press trigger. Pilot arc starts.
Pause briefly at end of
cut before releasing trigger.
Inspect shield cup, tip, and electrode for
wear before cutting or whenever cutting
speed has been significantly reduced (see
torch Owner's Manual). Do not operate
torch without a tip or electrode in place.
Check Gas/Air Set
Pressure Controls
Postflow continues for approx. 20 to 30
seconds after releasing trigger; cutting arc
can be instantly restarted during postflow
Turn On
Power Source
After cutting arc starts, slowly
start moving torch across metal.
by pressing trigger.
ST-801 400-A
OM-225 Page 15