Hobart Welding Products
250
installation instructions
Troubleshooting
Specification
Poor Weld Bead Characteristics
Install
Parts list
Electrical Diagram
Symbol Usage
Threading Welding Wire
Warranty
Maintenance
Page 54
Notes
Page 53
Page 55
Image 54
Page 53
Page 55
Contents
Description
OM-192 440W
Processes
File MIG Gmaw
From Hobart to You
Table of Contents
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
Principal Safety Standards
EMF Information
About Pacemakers
UNE Décharge Électrique peut entraîner la mort
LES Fumées ET LES GAZ peuvent être dangereux
Indique un message de sécurité particulier
DES Particules Volantes peuvent blesser les yeux
LE Soudage peut provoquer un
Incendie ou une explosion
DES Pièces Chaudes peuvent provoquer des brûlures graves
’EMPLOI Excessif peut SUR
Risque D’INCENDIE OU D’EXPLO
LA Chute DE L’APPAREIL peut blesser
DES Organes Mobiles peuvent provoquer des blessures
Principales normes de sécurité
En ce qui concerne les stimulateurs cardiaques
Exceeding duty cycle can damage unit and void warranty
Specifications
Welding Power Source Duty Cycle And Overheating
Overheating
Welding Gun Duty Cycle And Overheating
Volt-Ampere Curves
Definition
Installing Welding Gun
Connecting To Weld Output Terminals
Installing Work Clamp
Setting Gun Polarity For Wire Type
Installing Wire Spool And Adjusting Hub Tension
Installing Gas Supply
Rear Panel
Positioning Jumper Links
Volts
Input Voltage
Electrical Service Guide
Hz Single
Min Grounding Conductor Size In AWG
Selecting a Location And Connecting Input Power
Threading Welding Wire
Wood
Turn Off unit, and disconnect input power
Operation
Connecting Spool Gun To Welding Power Source
Turn Off unit
− Operation
Controls
Voltage switch position
Weld Parameters
While welding
To read settings
Example 2/40 =
Number on left of slash
Supplementary Protectors
Routine Maintenance
Disconnect power before maintaining
Months
Replacing Drive Roll And Wire Inlet Guide
Turn Off power
Removing Knob From Front Panel
Turn Off power before replacing contact tip
Replacing Gun Contact Tip
Turn off welding power source/wire feeder
Wire size stamped on tip − check and match wire size
Replacing Switch And/Or Head Tube
Wire Drive/Gun Trouble Remedy
Welding Troubleshooting Table
Wire Drive/Gun Troubleshooting Table
Welding Trouble Remedy
− MIG Welding Gmaw Guidelines
Typical MIG Process Connections
Thickness to Amperage a
Typical MIG Process Control Settings
Wire Size Amperage Range
Amperage
Holding And Positioning Welding Gun
Conditions That Affect Weld Bead Shape
Poor Weld Bead Characteristics
Good Weld Bead Characteristics
Gun Movement During Welding
Troubleshooting − Excessive Penetration
Troubleshooting − Excessive Spatter
Troubleshooting − Porosity
Possible Causes Corrective Actions
Troubleshooting − Lack Of Penetration
Troubleshooting − Incomplete Fusion
Troubleshooting − Burn-Through
Troubleshooting − Waviness Of Bead
Troubleshooting − Distortion
Common MIG Shielding Gases
Troubleshooting Guide For Semiautomatic Welding Equipment
Wire does not feed
Application
Welding arc not stable Wire slipping in drive rolls
OM-192 440
− Electrical Diagram
− Parts List
REGULATOR/FLOWMETER, 10−50 CFH ARGON/CO2
Center Baffle w/Components
Center Baffle w/Components -1Item
Rear Panel w/Components
Front Panel w/Components
M-25 Gun
Optional Spool Gun Switch
Description Remarks
Page
Service
Support
Assistance
Contact your Distributor for
Hobart Welding Products
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