Hobart Welding Products
175, OM-944 196 639G
manual
Troubleshooting
Specifications
Poor Weld Bead Characteristics
Install
Parts list
Electrical Diagram
Symbol Usage
Threading Welding Wire
Safety
Service
Page 50
Notes
Page 49
Page 51
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Page 49
Page 51
Contents
Description
OM-944
Processes
From Hobart to You
Table of Contents
Options and Accessories Warranty
Arc Welding Hazards
Symbol Usage
Marks a special safety message
Electric Shock can kill
Flying Metal can injure eyes
ARC Rays can burn eyes and skin
Welding can cause fire or explosion
Buildup of GAS can injure or kill
California Proposition 65 Warnings
About Pacemakers
Principal Safety Standards
EMF Information
Identifie un message de sécurité particulier
− Consignes DE Sécurité − À Lire Avant Utilisation
LES Pièces Chaudes peuvent cau- ser des brûlures graves
LE Soudage peut causer un incen- die ou une explosion
LES Particules Projetées peu- vent blesser les yeux
LE Bruit peut affecter l’ouïe
’EMPLOI Excessif peut Faire
Risque D’INCENDIE OU D’EXPLO
LA Chute DE L’APPAREIL peut blesser
LES Pièces Mobiles peuvent cau- ser des blessures
Consignes relatives aux stimulateurs cardiaques
Principales normes de sécurité
Information sur les champs électromagnétiques
VAC Model
− Specifications
Specifications
Duty Cycle %
Duty Cycle And Overheating
Output
Output Amperes
Volt-Ampere Curves
Load Amps
− Installation
Installing Welding Gun Installing Work Clamp
Process/Polarity Table
Changing Polarity
Installing Gas Supply
Rating Label
Do not move or operate unit where it could tip
= GND/PE
Electrical Service Guide For 230 VAC Model
Installing Wire Spool And Adjusting Hub Tension
Threading Welding Wire
Hold wire tightly to keep it from unraveling
− Operation
Controls
Weld Parameter Chart For 115 VAC Model
Welding Guide
For 115 Volt Wire Welding Package
Weld Parameter Chart For 230 VAC Model
For 230 Volt Wire Welding Package
Disconnect power before maintaining
− Maintenance &TROUBLESHOOTING
Routine Maintenance
Overload Protection Drive Motor Protection
Replacing Gun Contact Tip
Changing Drive Roll Or Wire Inlet Guide
Turn Off power before replacing contact tip
To Reassemble Gun
Cleaning Or Replacing Gun Liner
Disconnect gun from unit
Replacing Switch And/Or Head Tube
Troubleshooting Table
Trouble Remedy
− Electrical Diagram
Circuit Diagram For 115 VAC Model
Circuit Diagram For 230 VAC Model
− MIG Welding Gmaw Guidelines
Typical MIG Process Connections
Thickness to Amperage a
Typical MIG Process Control Settings
Wire Size Amperage Range
Select Voltage
Holding And Positioning Welding Gun
Conditions That Affect Weld Bead Shape
Gun Movement During Welding
Poor Weld Bead Characteristics
Good Weld Bead Characteristics
Troubleshooting − Excessive Penetration
Troubleshooting − Excessive Spatter
Troubleshooting − Porosity
Possible Causes Corrective Actions
Troubleshooting − Burn-Through
Troubleshooting − Lack Of Penetration
Troubleshooting − Incomplete Fusion
Troubleshooting − Waviness Of Bead
Troubleshooting − Distortion
Application
Troubleshooting Guide For Semiautomatic Welding Equipment
Common MIG Shielding Gases
Welding arc not stable Wire slipping in drive rolls
Return To Table Of Contents
− Parts List
Main Assembly
Dia Part
H-10 Gun
195
Optional Drive Rolls
Options
Page
Service
Support
Contact your Distributor for
Hobart Welding Products
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