CIGWELD WeldSkill 4R Wirefeeder - 1.05 Servicing Hazards

SAFETY INSTRUCTIONS AND WARNINGS WELDSKILL 250, 350
Manual 0-5186 1-7 Safety Instructions and Warnings
1.05 Servicing Hazards
!
WARNING
The symbols shown below are used throughout this
manual to call attention to and identify possible haz-
ards. When you see the symbol, watch out, and follow
the related instructions to avoid the hazard.
Only qualified persons should test, maintain, and
repair this unit.
Only qualified persons should test, maintain, and
repair this unit.
WARNING
ELECTRIC SHOCK can kill.
• Donottouchliveelectricalparts.
• TurnOffweldingpowersourceandwirefeederanddisconnect
and lockout input power using line disconnect switch, circuit
breakers, or by removing plug from receptacle, or stop engine
before servicing unless the procedure specifically requires an
energized unit.
• Insulateyourselffromgroundbystandingorworkingondry
insulating mats big enough to prevent contact with the ground.
• Donotleaveliveunitunattended.
• Ifthisprocedurerequiresandenergizedunit,haveonlyper-
sonnel familiar with and following standard safety practices
do the job.
• Whentestingaliveunit,usetheone-handmethod.Donot
put both hands inside unit. Keep one hand free.
• Disconnectinputpowerconductorsfromde-energizedsupply
line BEFORE moving a welding power source.
SIGNIFICANT DC VOLTAGE exists after removal of input
power on inverters.
• Turn Off inverters,disconnect input power, anddischarge
input capacitors according to instructions in Troubleshooting
Section before touching any parts.
WARNING
STATIC (ESD) can damage PC boards.
• Puton groundedwrist strapBEFORE handling boardsor
parts.
• Useproperstatic-proofbagsandboxestostore,move,or
ship PC boards.
WARNING
FIRE OR EXPLOSION hazard.
• Donotplaceuniton,over,ornearcombustiblesurfaces.
• Donotserviceunitnearammables.
WARNING
FLYING METAL or DIRT can injure eyes.
• Wearsafetyglasseswithsideshieldsorfaceshieldduring
servicing.
• Becarefulnottoshortmetaltools,parts,orwirestogether
during testing and servicing.
WARNING
HOT PARTS can cause sever burns.
• Donottouchhotpartsbarehanded.
• Allowcoolingperiodbeforeworkingonequipment.
• Tohandle not parts, use proper tools and/or wear heavy,
insulated welding gloves and clothing to prevent burns.
WARNING
EXPLODING PARTS can cause injury.
• Failedpartscanexplodeorcauseotherpartstoexplodewhen
power is applied to inverters.
• Alwayswearafaceshieldandlongsleeveswhenservicing
inverters.
WARNING
SHOCK HAZARD from testing.
• TurnOffweldingpowersourceandwirefeederorstopengine
before making or changing meter lead connections.
• Useatleastonemeterleadthathasaself-retainingspring
clip such as an alligator clip.
• Readinstructionsfortestequipment.
WARNING
FALLING UNIT can cause injury.
• Useliftingeyetoliftunitonly,NOTrunninggear,gascylinders,
or any other accessories.
• Useequipmentofadequatecapacitytoliftandsupportunit.
• Ifusingliftforkstomoveunit,besureforksarelongenough
to extend beyond opposite side of unit.
WARNING
MOVING PARTS can cause injury,
• Keepawayfrommovingpartssuchasfans.
• Keepawayfrompinchpointssuchasdriverolls.
• Haveonlyqualiedpersonsremovedoors,panels,covers,or
guards for maintenance as necessary.
• Keephands,hair,looseclothing,andtoolsawayfrommoving
parts.