Miller ICE-70M Gebruikershandleiding - Pagina 15
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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 retaining 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
sparks from reflecting back at torch.
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.
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.
Adjust torch speed so
sparks go thru metal and
out bottom of cut.
°
angle to prevent
Check Torch Tip,
Safety
Electrode, And
Retaining Cup
Press trigger. After 2 seconds
of preflow, pilot arc starts.
Pause briefly at end of
cut before releasing trigger.
Figure 4-2. Sequence Of Plasma Arc Cutting (PAC)
INCORRECT STANDOFF DISTANCE can damage
torch.
•
For non-shielded cutting, always use a 1/8 in (3 mm) standoff
distance between torch tip and workpiece.
•
For 50 ampere torch, always use standoff guide when cutting with
power source Range switch in High Range.
HAVING PILOT ARC TURN ON AND OFF
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
Set
Pressure
Controls
start moving torch across metal.
Postflow continues for 20 seconds
after releasing trigger; cutting arc
can be instantly restarted during
Turn On
Power Source
After cutting arc starts, slowly
postflow by pressing trigger.
ST-161 698-A
OM-1591 Page 11