Hobart Welding Products
125
manual
Work like a Pro
Troubleshooting
Specs
Poor Weld Bead Characteristics
Install
Weld Parameter Chart
Symbol Usage
Welding Wire can injure
Warranty
Accessories/Consumables
Readjust welding parameters
Page 46
Notes
Work like a Pro!
Pros weld and cut safely. Read the
safety rules at
the beginning
of this manual.
Page 45
Page 47
Image 46
Page 45
Page 47
Contents
Description
Processes
File Flux Cored Fcaw
From Hobart to You
Protect Your Investment
Table of Contents
10-1
10-2
Electric Shock can kill
Symbol Usage
Arc Welding Hazards
HOT Parts can burn
Welding can cause fire or explosion
Fumes and Gases can be hazardous
ARC Rays can burn eyes and skin
Flying Metal or Dirt can injure eyes
Falling Equipment can injure
Welding Wire can injure
Fire or Explosion hazard
Moving Parts can injure
EMF Information
Principal Safety Standards
California Proposition 65 Warnings
About Implanted Medical Devices
UNE Décharge Électrique peut entraîner la mort
Symboles utilisés
Indique des instructions spécifiques
LES Fumées ET LES GAZ peuvent être dangereux
LES Pièces Chaudes peuvent provoquer des brûlures
LE Soudage peut provoquer un incendie ou une explosion
Risque D’INCENDIE OU
LE Bruit peut endommager l’ouïe
LES Bouteilles peuvent exploser si elles sont endommagées
LA Chute DE L’ÉQUIPEMENT peut provoquer des blessures
LES Fils DE Soudage peuvent provoquer des blessures
Proposition californienne 65 Avertissements
Les Pièces Mobiles peuvent causer des blessures
LE Soudage À L’ARC risque de provoquer des interférences
Informations relatives aux CEM
Principales normes de sécurité
En ce qui concerne les implants médicaux
OM-947
Specifications
− Specifications
Symbols And Definitions
− Definitions
Volt-Ampere Curves
Warranty
Duty Cycle And Overheating
Can damage unit or gun and void
Installing Work Clamp
− Installation
Slide insulating grips over handles Tools Needed OM-947
Process/Polarity Table
Changing Polarity
Installing Gas Supply
Tools Needed 11/16, 1-1/8 Shielding Gas
Only applies to units equipped with
Installing Wire Spool And Adjusting Hub Tension
Optional hub kit
Serial Number And Rating Label Location
Selecting a Location And Connecting 115 Volt Input Power
Make this installation
Section
Installing Contact Tip And Nozzle
Turn off welding power source
Threading Welding Wire
Hold wire tightly to keep it from unraveling
Operating The Gun
− Operation
Controls
Load
Weld Parameter Chart
Overload Protection
− Maintenance &TROUBLESHOOTING
Routine Maintenance
Drive Motor Protection
Changing Drive Roll Or Wire Inlet Guide
Retaining Knob Opening
Turn Off power before replacing contact tip
Replacing Gun Contact Tip
Thread wire according to
Cleaning Gun Liner
Hold wire tightly to keep it
From unraveling. Secure
Tools Needed Head Tube Mm / 10 mm
Remove black sleeving from end of replacement liner
Replacing Gun Liner
Tube. Separate gun handle halves
10 mm
Power source see Section
Troubleshooting Table
Secure power cord plug in receptacle see Section
Trouble Remedy
− Electrical Diagram
Circuit Diagram
Typical Fcaw Process Connections
− FCAW/GMAW Welding Guidelines
Typical Gmaw MIG Process Connections
Amperage
Typical Control Settings
Wire Size Amperage Range
Select Voltage
Holding And Positioning Welding Gun
End View of Work Angle
Short Normal Long
Conditions That Affect Weld Bead Shape
Slow Normal
Good Weld Bead Characteristics
Poor Weld Bead Characteristics
Gun Movement During Welding
Troubleshooting − Porosity
Troubleshooting − Excessive Spatter
Possible Causes Corrective Actions
Troubleshooting − Lack Of Penetration
Troubleshooting − Excessive Penetration
Troubleshooting − Incomplete Fusion
Troubleshooting − Distortion
Troubleshooting − Burn-Through
Troubleshooting − Waviness Of Bead
Base metal to move
Application
Troubleshooting Guide For Semiautomatic Welding Equipment
Common Gmaw MIG Shielding Gases
Fillet
Gas hose in gun and cable assembly
Gas nozzle plugged Clean or replace gas nozzle
Open gas valve at cylinder and adjust flow rate
Loose or broken wires to gas solenoid
Consumables
− ACCESSORIES/CONSUMABLES
Accessories
Pkg
Material Thickness Reference Chart
Work like a Pro
Support
Service
Assistance
Contact your Distributor for
Hobart Welding Products
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