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OM-867 Page 4
SECTION 4 – OPERATION
WARNING
ELECTRIC SHOCK can kill.
• Always wear dry insulating gloves.
• Insulate yourself from work and ground.
• Do not touch live electrical parts.
• Keep all panels and covers securely in place.
FUMES AND GASES can be hazardous
to your health.
• Keep your head out of the fumes.
• Ventilate area, or use breathing device.
• Read Material Safety Data Sheets (MSDSs) and
manufacturer’s instructions for material used.
WELDING can cause fire or explosion.
• Do not weld near flammable material.
• Watch for fire; keep extinguisher nearby.
• Do not locate unit over combustible surfaces.
• Do not weld on closed containers.
• Allow work and equipment to cool before handling.
ARC RAYS can burn eyes and skin;
NOISE can damage hearing.
• Wear welding helmet with correct shade of filter.
• Wear correct eye, ear, and body protection.
MOVING PARTS can cause injury.
• Keep away from moving parts.
• Keep all doors, panels, covers, and guards closed
and securely in place.
MAGNETIC FIELDS FROM HIGH CUR-
RENTS can affect pacemaker operation.
• Pacemaker wearers keep away.
• Wearers should consult their doctor before going
near arc welding, gouging, or spot welding opera-
tions.
See Safety Precautions at beginning of manual for ba-
sic welding safety information.
swarn6.1 10/91
1 Insulating Gloves
2 Safety Glasses With Side
Shields
3 Welding Helmet
Wear dry insulating gloves, safety
glasses with side shields, and a
welding helmet with a correct shade
of filter (see ANSI Z49.1).
sb3.1 10/91
123
Figure 4-1. Safety Equipment
ST-154 616
1 Voltmeter
Displays to nearest 1/10 volt.
2 Ammeter
Displays to nearest ampere.
3 Std./Hold Switch
Use switch to select meters display
function.
In Std. (Standard) position, meters
continuously display actual volts/
amps while welding; preset value
while idling.
In Hold position, meters measure
volts/amps after 10 seconds of
welding and holds values on dis-
plays for 15 seconds after welding
stops.
Hold function does not work when
welding amperage is less than
60 A.
1
Start Welding
After 10
Seconds
5 0 . 0
1 0 0
Stop Welding Holds Value
For 15
Seconds Clears ValueDisplays New Value
5 0 . 0
1 0 0
6 0 . 0
0 0 0
6 0 . 0
0 0 0
Idling Value
STD.
HOLD
HOLD
HOLD
STD.
VOLTS
AMPS
Start Welding
5 0 . 0
1 0 0
Stop Welding Clears ValueDisplays New Value
6 0 . 0
0 0 0
6 0 . 0
0 0 0
Idling Value
STD.
HOLD
STD.
2
3
OCV OCV
OCV OCV
Example:
Figure 4-2. Voltmeter/Ammeter And Std./Hold Switch