Hobart Welding Products
OM-227 978B
manual
Troubleshooting
Specs
Poor Weld Bead Characteristics
Install
Parts list
Electrical Diagram
Symbol Usage
Connecting Optional Spool Gun
Main Assembly
Safety
Page 31
Notes
OM-227
978 Page 27
Page 30
Page 32
Image 31
Page 30
Page 32
Contents
2007−04
OM-227 978B
Processes
Description
From Hobart to You
Table of Contents
− MIG Welding Gmaw Guidelines
− Parts List
Typical MIG Process Connections
Electric Shock can kill
Symbol Usage
Marks a special safety message
Arc Welding Hazards
Buildup of GAS can injure or kill
ARC Rays can burn eyes and skin
Welding can cause fire or explosion
Flying Metal can injure eyes
California Proposition 65 Warnings
EMF Information
Principal Safety Standards
About Pacemakers
LES Fumées ET LES GAZ peuvent être dangereux
UNE Décharge Électrique peut entraîner la mort
Indique un message de sécurité particulier
LE Bruit peut endommager l’ouïe
LE Soudage peut provoquer un incendie ou une explosion
DES Particules Volantes peuvent blesser les yeux
DES Pièces Chaudes peuvent provoquer des brûlures graves
DES Organes Mobiles peuvent provoquer des blessures
Risque D’INCENDIE OU D’EXPLO
LA Chute DE L’APPAREIL peut blesser
’EMPLOI Excessif peut SUR
En ce qui concerne les stimulateurs cardiaques
Boulevard, Rexdale, Ontario, Canada M9W 1R3 téléphone
− Definitions
− Specifications
Symbols And Definitions
Specifications
Output
Duty Cycle And Overheating
Volt-Ampere Curves
Amperes
Installing Welding Gun
− Installation
Installing Work Clamp
Changing Polarity
Process/Polarity Table
Installing Gas Supply
Selecting a Location And Connecting Input Power
Installing Wire Spool And Adjusting Hub Tension
Electrical Service Guide
Tools Needed
Installing Contact Tip And Nozzle
Appropriate setting
Connecting Optional Spool Gun
Threading Welding Wire
Controls
− Operation
Weld Parameter Chart For 230 VAC Model
227 949-B
Months
− Maintenance &TROUBLESHOOTING
Routine Maintenance
Overload Protection Drive Motor Protection
030/.035 Groove Stamped 023/.025 Groove Stamped .030/.035
Changing Drive Roll Or Wire Inlet Guide
Turn Off power before replacing contact tip
Replacing Gun Contact Tip
Disconnect gun from unit
Cleaning Or Replacing Gun Liner
To Reassemble Gun
Replacing Switch And/Or Head Tube
Trouble Remedy
Troubleshooting Table
OM-227 978
Circuit Diagram
− Electrical Diagram
227 951-B
Typical MIG Process Connections
− MIG Welding Gmaw Guidelines
Amperage
Typical MIG Process Control Settings
Wire Size Amperage Range
Thickness to Amperage a
Holding And Positioning Welding Gun
Short Normal Long
Conditions That Affect Weld Bead Shape
Push
Perpendicular Drag
Good Weld Bead Characteristics
Poor Weld Bead Characteristics
Gun Movement During Welding
Possible Causes Corrective Actions
Troubleshooting − Excessive Spatter
Troubleshooting − Porosity
Troubleshooting − Excessive Penetration
Troubleshooting − Incomplete Fusion
Troubleshooting − Lack Of Penetration
Troubleshooting − Burn-Through
Weld bead
Troubleshooting − Waviness Of Bead
Troubleshooting − Distortion
Common MIG Shielding Gases
Troubleshooting Guide For Semiautomatic Welding Equipment
OM-227 978
Main Assembly
− Parts List
Dia Part
Dia Part Mkgs Description Quantity
231
H-14 Gun
Options
Optional Drive Rolls
Consumables
Page
Work like a Pro
Support
Service
Assistance
Hobart Welding Products
Contact your Distributor for
Related pages
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