Miller Electric MC-80 Owner's Manual page 12

CAUTION
T I P AND EL ECT RO DE WEAR BEYO ND
RE CO M M E NDE D VAL UE S or OP E RAT I O N
WITHOUT TIP OR ELECTRODE can damage
torch.
Inspect cup, tip, and electrode before cutting or whenever cutting
speed has been significantly reduced (see Section 5-2).
Do not operate torch without a tip or electrode in place.
INCORRECT PIERCING can damage torch.
When piercing (starting a cut away from metal edge) use a slight
standoff distance and hold torch at about 10 angle to prevent
sparks from reflecting back at torch.
INCORRECT STANDOFF DISTANCE can damage
torch.
For cutting, always use approximately 1/8 in (3 mm) standoff
distance between torch tip and workpiece.
Install & Put On Personal
Connect
Equipment Equipment
Begin
Cutting
EXAMPLE Of Cutting Operation
Install standoff guide, place
guide onto metal so that torch
tip lines up with edge of metal
and standoff distance is
approx. 1/8 in.
Adjust torch speed so
sparks go thru metal and
out bottom of cut.
OM-1592 Page 6
Check Torch
Safety Tip, Electrode,
And Shield Cup
Press trigger. After 2 seconds
of preflow, pilot arc starts.
Pause briefly at end of
cut before releasing trigger.
HITTING TORCH ON A HARD SURFACE to
remove spatter can damage torch.
Do not clean torch by hitting it against a hard surface.
Hitting hard surfaces can damage torch parts and stop proper
operation.
HAVI NG PI L O T ARC TURN ON AND OF F
REPEATEDLY, such as during the cutting of chain
fence, will shorten tip, electrode, and torch life.
Put a continuous piece of sheet metal under the fence to prevent
pilot arc from cycling on and off.
Avoid constant starting and restarting of the arc.
Check Gas/Air
Pressure
If cutting arc is not started within 5 seconds of pilot arc, pilot
arc will go out. There is a 20-second reset time before the pilot
arc can be restarted.
Set Turn On
Controls Cutter
After cutting arc starts, slowly
start moving torch across metal.
Postflow continues for approx. 20 to
30 seconds after releasing trigger;
cutting arc can be instantly restarted
during postflow by pressing trigger.
ST-800 967-A