Lincoln Electric CENTURY AC 120 Operator'S Manual Download Page 2

FOR ENGINE
powered equipment.

1.a. Turn the engine off before troubleshooting and maintenance

work unless the maintenance work requires it to be running.

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1.b. Operate engines in open, well-ventilated

areas or vent the engine exhaust fumes 
outdoors.

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1.c. Do  not  add  the  fuel  near  an  open  flame

welding  arc  or  when  the  engine  is  running.
Stop  the  engine  and  allow  it  to  cool  before
refueling to prevent spilled fuel from vaporiz-
ing  on  contact  with  hot  engine  parts  and
igniting.  Do  not  spill  fuel  when  filling  tank.  If
fuel  is  spilled,  wipe  it  up  and  do  not  start
engine until fumes have been eliminated.

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1.d. Keep  all  equipment  safety  guards,  covers  and  devices  in

position  and  in  good  repair.Keep  hands,  hair,  clothing  and
tools  away  from  V-belts,  gears,  fans  and  all  other  moving
parts when starting, operating or repairing equipment.

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1.e. In  some  cases  it  may  be  necessary  to  remove  safety

guards  to  perform  required  maintenance.  Remove
guards  only  when  necessary  and  replace  them  when  the
maintenance  requiring  their  removal  is  complete.
Always  use  the  greatest  care  when  working  near  moving
parts.

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1.f. Do  not  put  your  hands  near  the  engine  fan.

Do  not  attempt  to  override  the  governor  or
idler  by  pushing  on  the  throttle  control  rods
while the engine is running.

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1.g. To prevent accidentally starting gasoline engines while

turning the engine or welding generator during maintenance
work,  disconnect  the  spark  plug  wires,  distributor  cap  or
magneto wire as appropriate.

i

SAFETY

i

ARC WELDING CAN BE HAZARDOUS. PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH.
KEEP CHILDREN AWAY. PACEMAKER WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING.

Read and understand the following safety highlights. For additional safety information, it is strongly recommended that you
purchase  a  copy  of  “Safety  in  Welding  &  Cutting  -  ANSI  Standard  Z49.1”  from  the  American  Welding  Society,  P.O.  Box
351040, Miami, Florida 33135 or CSA Standard W117.2-1974. A Free copy of “Arc Welding Safety” booklet E205 is available
from the Lincoln Electric Company, 22801 St. Clair Avenue, Cleveland, Ohio 44117-1199.

BE  SURE  THAT  ALL  INSTALLATION,  OPERATION,  MAINTENANCE  AND  REPAIR  PROCEDURES  ARE
PERFORMED ONLY BY QUALIFIED INDIVIDUALS.

WARNING

ELECTRIC AND 
MAGNETIC FIELDS
may be dangerous

2.a.  Electric  current  flowing  through  any  conductor  causes 

localized  Electric  and  Magnetic  Fields  (EMF).  Welding 
current  creates  EMF  fields  around  welding  cables  and 
welding machines

2.b. EMF  fields  may  interfere  with  some  pacemakers,  and

welders  having  a  pacemaker  should  consult  their  physician
before welding.

2.c. Exposure  to  EMF  fields  in  welding  may  have  other  health

effects which are now not known.

2.d. All  welders  should  use  the  following  procedures  in  order  to

minimize  exposure  to  EMF  fields  from  the  welding  circuit:

2.d.1. Route the electrode and work cables together - Secure

them with tape when possible.

2.d.2. Never  coil  the  electrode  lead  around  your  body.

2.d.3. Do  not  place  your  body  between  the  electrode  and

work cables. If the electrode cable is on your right 
side, the work cable should also be on your right side.

2.d.4. Connect  the  work  cable  to  the  workpiece  as  close  as

possible to the area being welded.

2.d.5. Do not work next to welding power source.

1.h. To  avoid  scalding,  do  not  remove  the

radiator pressure cap when the engine is
hot.

CALIFORNIA PROPOSITION 65 WARNINGS

Diesel engine exhaust and some of its constituents
are known to the State of California to cause can-
cer, birth defects, and other reproductive harm.

The  engine  exhaust  from  this  product  contains
chemicals known to the State of California to cause
cancer, birth defects, or other reproductive harm.

The Above For Diesel Engines

The Above For Gasoline Engines

Summary of Contents for CENTURY AC 120

Page 1: ...sed by proper installation and thoughtful operation on your part DO NOT INSTALL OPERATE OR REPAIR THIS EQUIPMENT WITHOUT READ ING THIS MANUAL AND THE SAFETY PRECAUTIONS CON TAINED THROUGHOUT And most...

Page 2: ...KER WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING Read and understand the following safety highlights For additional safety information it is strongly recommended that you purchase a copy...

Page 3: ...Never simultaneously touch electrically hot parts of electrode holders connected to two welders because voltage between the two can be the total of the open circuit voltage of both welders 3 i When w...

Page 4: ...eas Avoid welding near hydraulic lines Have a fire extinguisher readily available 6 b Where compressed gases are to be used at the job site special precautions should be used to prevent hazardous situ...

Page 5: ...inflammables 4 Des gouttes de laitier en fusion sont mises de l arc de soudage Se prot ger avec des v tements de protection libres de l huile tels que les gants en cuir chemise paisse pan talons sans...

Page 6: ..._____________________ Date Purchased___________________________________________________________________________ Where Purchased_________________________________________________________________________...

Page 7: ...__________________________ Operation Section B Thermal Protection B 1 Making A Weld B 1 Electrode Selection B 1 Learning to Weld B 1 Thru B 4 __________________________________________________________...

Page 8: ...skin Wear eye ear and body protection GENERAL DESCRIPTION The AC 120 is composed of a single phase trans former and is suitable for welding in alternate current using stick electrodes type 6013 with...

Page 9: ...5 64 Fleetweld 37 E6013 INPUT SINGLE PHASE ONLY RATED OUTPUT OUTPUT RANGE Height Width Depth Weight 11 00 in 7 00 in 11 00 in 24 5 Ibs 280 mm 178 mm 280 mm 11 kg PHYSICAL DIMENSIONS RECOMMENDED ELECTR...

Page 10: ...the work bench Make sure the contact to the workpiece is adequate by avoiding painted or nonmetallic sur faces 3 ELECTRODE HOLDER The Electrode holder and cable is attached to the welder at the factor...

Page 11: ...LD The serviceability of a product or structure utiliz ing this type of information is and must be the sole responsibility of the builder user Many vari ables beyond the control of The Lincoln Electri...

Page 12: ...trode is composed of a core of metal wire with an extruded chemical covering The core wire melts in the arc and tiny droplets of molten metal shoot across the arc into the molten pool The electrode pr...

Page 13: ...ing lift the electrode 1 8 3 2mm and the arc is estab lished NOTE If you stop moving the electrode while scratching the electrode will stick NOTE Most beginners try to strike the arc by a fast jabbing...

Page 14: ...ortant to hold the electrode at a 45 angle between the two sides or the metal will not distribute itself evenly See Figure B 8 To make it easy to get the 45 angle it is best to put the electrode in th...

Page 15: ...abeled POSSIBLE CAUSE lists the obvious external possibilities that may contribute to the machine symptom Step 3 RECOMMENDED COURSE OF ACTION This column provides a course of action for the Possible C...

Page 16: ...e before you proceed CAUTION PROBLEMS SYMPTOMS POSSIBLE CAUSE RECOMMENDED COURSE OF ACTION Power source stops Power switch on but no weld cur rent Unstable arc Porous weld Thermal Overload Protection...

Page 17: ...l codes L1 N G NOTE This diagram is for reference only It may not be accurate for all machines covered by this manual The specific diagram for a particular code is pasted inside the machine on one of...

Page 18: ...h electrically live parts or electrode with skin or wet clothing Insulate yourself from work and ground No toque las partes o los electrodos bajo carga con la piel o ropa moja da Aislese del trabajo y...

Page 19: ...te Be und Entl ftung des Arbeitsplatzes Mantenha seu rosto da fuma a Use ventila o e exhaust o para remover fumo da zona respirat ria Turn power off before servicing Desconectar el cable de ali mentac...

Page 20: ...Century Equipment 2345 Murphy Blvd Gainesville GA 30504 TEL 866 236 0044 Web Site www centuryequipment net...

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