Miller Electric MC-80M owner manual Hitting Torch on a Hard Surface to

Models: MC-80M MC-80

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CAUTION

T IP AND EL ECT RO DE WEAR BEYO ND

HITTING TORCH ON A HARD SURFACE to

RECO MMENDED VAL UES or OPERAT IO N

remove spatter can damage torch.

WITHOUT TIP OR ELECTRODE can damage

Do not clean torch by hitting it against a hard surface.

torch.

Hitting hard surfaces can damage torch parts and stop proper

Inspect cup, tip, and electrode before cutting or whenever cutting

 

operation.

speed has been significantly reduced (see Section 5-2).

 

 

HAVING PIL O T ARC TURN ON AND OF F

Do not operate torch without a tip or electrode in place.

 

 

REPEATEDLY, such as during the cutting of chain

 

 

INCORRECT PIERCING can damage torch.

fence, will shorten tip, electrode, and torch life.

When piercing (starting a cut away from metal edge) use a slight

Put a continuous piece of sheet metal under the fence to prevent

 

standoff distance and hold torch at about 10° angle to prevent

pilot arc from cycling on and off.

 

sparks from reflecting back at torch.

Avoid constant starting and restarting of the arc.

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

Check Torch

Check Gas/Air

Set

Turn On

Connect

Safety

Tip, Electrode,

Pressure

Controls

Cutter

Equipment

Equipment

And Shield Cup

 

 

 

 

Begin

 

 

 

 

 

Cutting

 

 

 

 

EXAMPLE Of Cutting Operation

 

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.

 

 

 

 

 

 

 

 

 

 

Install standoff guide, place

Press trigger. After 2 seconds

After cutting arc starts, slowly

guide onto metal so that torch

of preflow, pilot arc starts.

start moving torch across metal.

tip lines up with edge of metal

 

 

and standoff distance is

 

 

approx. 1/8 in.

 

 

Adjust torch speed so

Pause briefly at end of

sparks go thru metal and

cut before releasing trigger.

out bottom of cut.

 

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

OM-1592 Page 6

Page 12
Image 12
Miller Electric MC-80M owner manual Hitting Torch on a Hard Surface to, REPEATEDLY, such as during the cutting of chain