STE POTENZA 160, Operating Instruction

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1.- Explanation of the normative markings
Pos. 1 Name, address and mark of the manufacturer,
distributor or importer.
Pos. 2 Identification of the model
Pos. 3 Model mapping
Pos. 4 Symbol of the welding power source
Pos. 5 Reference to the standard complied by the equipment
Pos. 6 Symbol for the welding process
Pos. 7 Symbol for use in environments with increased
electrical shock risk
Pos. 8 Symbol of the welding current
Pos. 9 Nominal no-load voltage
Pos. 10 Voltage range and nominal output current
Pos. 11 Duty cycle
Pos. 11a Duty cycle at 45%
Pos. 11b Duty cycle at 60%
Pos. 11c Duty cycle at 100%
Pos. 12 Nominal cutoff current (I2)
Pos. 12a Current value for duty cycle at 45%
Pos. 12b Current value for duty cycle at 60%
Pos. 12c Current value for duty cycle at 100%
Pos. 13 Load voltage (U2)
Pos. 13a Voltage value for duty cycle at 45%
Pos. 13b Voltage value for duty cycle at 60%
Pos. 13c Voltage value for duty cycle at 100%
Pos. 14 Symbol for power supply
Pos. 15 Nominal value of voltage supply
Pos. 16 Maximum nominal supply current
Pos. 17 Maximum effective supply current
Pos. 18 IP degree of protection
2.- Safety precautions
READ INSTRUCTIONS.
• Read Owner’s Manual before using or servic-ing unit.
• Use only genuine replacement parts from themanufacturer.
2.1.Symbol Usage
DANGER! − Indicates a hazardous situation which, ifnot
avoided, will result in death or serious injury.
Thepossible hazards are shown in the adjoining
symbolsor explained in the text.
Indicates a hazardous situation which, if not
avoided,could result in death or serious injury. The
possible hazards ex-plained in the text.
2.2.- Arc Welding Hazards
Only qualified persons should install, operate,
maintain, andrepair this unit.
During operation, keep everybody, especially children,
away.
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ELECTRIC SHOCK can kill.
Touching live electrical parts can cause fatal shocksor severe
burns. The electrode and work circuit iselectrically live whenever
the output is on. The inputpower circuit and machine internal
circuits are alsolive when power is on. In semiautomatic or
automatic wire welding, thewire, wire reel, drive roll housing, and
all metal parts touching thewelding wire are electrically live.
Incorrectly installed or improperlygrounded equipment is a
hazard.
• Do not touch live electrical parts.
• Wear dry, hole-free insulating gloves and body protection.
• Insulate yourself from work and ground using dry insulating
matsor covers big enough to prevent any physical contact with
the workor ground.
• Do not use AC output in damp areas, if movement is confined, or
if there is a danger of falling.
• Use AC output ONLY if required for the welding process.
• If AC output is required, use remote output control if present on
unit.
• Additional safety precautions are required when any of the
follow-ing electrically hazardous conditions are present: in
damplocations or while wearing wet clothing; on metal structures
suchas floors, gratings, or scaffolds; when in cramped positions
suchas sitting, kneeling, or lying; or when there is a high risk of
unavoid-able or accidental contact with the workpiece or ground.
• Disconnect input power or stop engine before installing
orservicing this equipment.
• Properly install and ground this equipment according to
itsOwner’s Manual and national, state, and local codes
• Always verify the supply ground − check and be sure that
inputpower cord ground wire is properly connected to ground
terminal indisconnect box or that cord plug is connected to a
properlygrounded receptacle outlet. When making input
connections, attach proper grounding conduc-tor first − double-
check connections.
• Keep cords dry, free of oil and grease, and protected from hot
metaland sparks.
• Frequently inspect input power cord for damage or bare wiring
−replace cord immediately if damaged − bare wiring can kill.
• Turn off all equipment when not in use.
• Do not use worn, damaged, undersized, or poorly spliced cables.
• Do not drape cables over your body.
• If earth grounding of the workpiece is required, ground it
directlywith a separate cable.
• Do not touch electrode if you are in contact with the work,
ground,or another electrode from a different machine.
• Do not touch electrode holders connected to two welding ma-
chines at the same time since double open-circuit voltage will
bepresent.
• Use only well-maintained equipment. Repair or replace
damagedparts at once. Maintain unit according to manual.
• Wear a safety harness if working above floor level.
• Keep all panels and covers securely in place.
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ENGLISH
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