Service Manual Instruction Manual

TRANSARC 130i
GENERAL INFORMATION 1-8 Manual 0-5282
1.05 Servicing Hazards
!
WARNING
The symbols shown below are used
throughout this manual to call attention to
and identify possible hazards. When you
see the symbol, watch out, and follow the
related instructions to avoid the hazard.
Only qualified persons should test, main
-
tain, and repair this unit.
Only qualified persons should test, main
-
tain, 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 specifi-
cally 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 personnel 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 instruc-
tions 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equip-
ment.
• To handle not parts, useproper tools and/or
wear heavy, insulated welding gloves and cloth-
ing 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.