Miller Electric APT-1000 - Manual (Page 11)

OM-1572 Page 5
1 Insulating Gloves
2 Safety Glasses With Side
Shields
3 Welding Helmet
4 Face Shield
Wear dry insulating gloves, safety
glasses with side shields, and a
welding helmet or face shield with a
correct shade of filter (see ANSI
Z49.1).
5 Ear Muffs
Wear approved ear muffs or ear
plugs if noise exposure exceeds
OSHA limits.
sb3.1 10/91
1 2 3 4 5
Figure 4-1. Safety Equipment
CAUTION
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.
TIP AND ELECTRODE WEAR BEYOND
RECOMMENDED VALUES or OPERATION
WITHOUT TIP OR ELECTRODE can damage
torch.
•
Inspect shield 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.
Place torch tip on edge Press trigger. After 2 seconds of preflow,
pilot arc starts. Pilot arc stops after 2
After cutting arc starts, slowly
start moving torch across metal.
Adjust torch speed so
sparks go through metal and
out bottom of cut.
Pause briefly at end of
cut before releasing trigger.
Postflow continues for 20 seconds
after releasing trigger; cutting arc
can be instantly restarted during postflow.
of metal.
Install &
Connect
Equipment
Check Torch
Tip, Electrode,
And Shield Cup
Check Air/Gas
Pressure
Set
Controls
Begin
Cutting
EXAMPLE Of Cutting Operation
ST-161 698
Turn On
Power Source
Put On Personal
Safety
Equipment
seconds if cutting arc does not start.
Figure 4-2. Sequence Of Plasma Arc Cutting (PAC)