OM-279 Page 3
1-3. Additional Symbols For Installation, Operation, And Maintenance

HOT PARTS can cause severe burns.

DDo not touch hot parts bare handed.
DAllow cooling period before working on torch.

MOVING PARTS can cause injury.

DKeep away from moving parts such as fans.
DKeep all doors, panels, covers, and guards
closed and securely in place.

FLYING METAL can injure eyes.

DWear safety glasses with side shields or face
shield.
MAGNETIC FIELDS can affect pacemakers.
DPacemaker wearers keep away.
DWearers should consult their doctor before go-
ing near plasma arc cutting operations.

OVERUSE can cause OVERHEATING.

DAllow cooling period; follow rated duty cycle.
DReduce amperage (thickness) or reduce duty
cycle before starting to cut again.

EXPLODING HYDROGEN hazard.

DWhen cutting aluminum underwater or with the
water touching the underside of the aluminum,
free hydrogen gas may collect under the work-
piece.
DSee your cutting engineer and water table instructions for help.

FALLING UNIT can cause injury.

DUse lifting eye to lift unit only, NOT running
gear, gas cylinders, or any other accessories.
DUse equipment of adequate capacity to lift unit.
DIf using lift forks to move unit, be sure forks are long enough to ex-
tend beyond opposite side of unit.

FIRE OR EXPLOSION hazard.

DDo not locate unit on, over, or near combustible
surfaces.
DDo not install unit near flammables.
DDo not overload building wiring – be sure power supply system is
properly sized, rated, and protected to handle this unit.

STATIC (ESD) can damage PC boards.

DPut on grounded wrist strap BEFORE handling
boards or parts.
DUse proper static-proof bags and boxes to
store, move, or ship PC boards.
H.F. RADIATION can cause interference.
DHigh frequency (H.F.) can interfere with radio
navigation, safety services, computers, and
communications equipment.
DHave only qualified persons familiar with elec-
tronic equipment perform this installation.
DThe user is responsible for having a qualified electrician promptly
correct any interference problem resulting from the installation.
DIf notified by the FCC about interference, stop using the equipment
at once.
DHave the installation regularly checked and maintained.
DKeep high-frequency source doors and panels tightly shut, keep
spark gaps at correct setting, and use grounding and shielding to
minimize the possibility of interference.
ARC CUTTING can cause interference.
DElectromagnetic energy can interfere with
sensitive electronic equipment such as
computers and computer-driven equipment
such as robots.
DTo reduce possible interference, keep cables as short as possible,
close together, and down low, such as on the floor.
DLocate cutting operation 100 meters from any sensitive electronic
equipment.
DBe sure this cutting power source is installed and grounded
according to this manual.
DIf interference still occurs, the user must take extra measures such
as moving the machine, using shielded cables, using line filters, or
shielding the work area.
1-4. Principal Safety Standards
Safety in Welding and Cutting, ANSI Standard Z49.1, from American
Welding Society, 550 N.W. LeJeune Rd, Miami FL 33126
Safety and Health Standards, OSHA 29 CFR 1910, from Superinten-
dent of Documents, U.S. Government Printing Office, Washington, D.C.
20402.
Recommended Practices for Plasma Arc Cutting, American Welding
Society Standard AWS C5.2, from American Welding Society, 550 N.W.
LeJeune Rd, Miami, FL 33126
Recommended Safe Practices for the Preparation for Welding and Cut-
ting of Containers That Have Held Hazardous Substances, American
Welding Society Standard AWS F4.1, from American Welding Society,
550 N.W. LeJeune Rd, Miami, FL 33126
National Electrical Code, NFPA Standard 70, from National Fire Protec-
tion Association, Batterymarch Park, Quincy, MA 02269.
Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1,
from Compressed Gas Association, 1235 Jefferson Davis Highway,
Suite 501, Arlington, VA 22202.
Code for Safety in Welding and Cutting, CSA Standard W117.2, from
Canadian Standards Association, Standards Sales, 178 Rexdale Bou-
levard, Rexdale, Ontario, Canada M9W 1R3.
Safe Practices For Occupation And Educational Eye And Face Protec-
tion, ANSI Standard Z87.1, from American National Standards Institute,
1430 Broadway, New York, NY 10018.
Cutting And Welding Processes, NFPA Standard 51B, from National
Fire Protection Association, Batterymarch Park, Quincy, MA 02269.