Hobart
125 EZ, H-9B
manual
Operating The Gun
Troubleshooting
Specification
Poor Weld Bead Characteristics
Install
Parts list
Electrical Diagram
Symbol Usage
Threading Welding Wire
Warranty
Typical Control Settings
Page 21
5-2.
Operating The Gun
1 Trigger Switch
When pressed, energized wire feeds.
1
Ref. 804
240-A
OM-923
Page 17
Page 20
Page 22
Image 21
Page 20
Page 22
Contents
Processes
OM-923
Description
File Flux Cored Fcaw
From Hobart to You
Table of Contents
Warranty
Marks a special safety message
Symbol Usage
Arc Welding Hazards
Electric Shock can kill
Welding can cause fire or explosion
ARC Rays can burn eyes and skin
Flying Metal can injure eyes
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
Incendie ou une explosion
LE Soudage peut provoquer un
DES Particules Volantes peuvent blesser les yeux
DES Pièces Chaudes peuvent provoquer des brûlures graves
LA Chute DE L’APPAREIL peut blesser
Risque D’INCENDIE OU D’EXPLO
’EMPLOI Excessif peut SUR
DES Organes Mobiles peuvent provoquer des blessures
En ce qui concerne les stimulateurs cardiaques
Principales normes de sécurité
− Specifications
Specifications
Duty Cycle And Overheating
Volt-Ampere Curves
Installing Work Clamp
− Installation
Process/Polarity Table
Polarity
Installing 4 in 102 mm Wire Spool
Installing Wire Spool And Adjusting Hub Tension
Do not move or operate unit where it could tip
Turn off welding power source
Installing Contact Tip And Nozzle
Input Power
Threading Welding Wire
Controls
− Operation
Operating The Gun
Routine Maintenance
− Maintenance &TROUBLESHOOTING
Overload Protection
Drive Motor Protection
Slide replacement wire guide into
Changing Drive Roll Or Wire Inlet Guide
Replacing Gun Contact Tip
Cleaning Gun Liner
Replacing Gun Liner
End of wire at spool
13/16 in 21 mm
Troubleshooting Table
Trouble Remedy
Does not run
Circuit Diagram
− Electrical Diagram
Typical Fcaw Process Connections
− Wire Welding Guidelines
Wire Size Amperage Range
Typical Control Settings
Thickness to Amperage a
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 − Porosity
Troubleshooting − Excessive Spatter
Troubleshooting − Excessive Penetration
Possible Causes Corrective Actions
Troubleshooting − Lack Of Penetration
Troubleshooting − Incomplete Fusion
Troubleshooting − Burn-Through
Troubleshooting − Distortion
Troubleshooting − Waviness Of Bead
Troubleshooting Guide For Semiautomatic Welding Equipment
Wire does not feed
Main Assembly
− Parts List
Dia Part Description Quantity
Pkg
225
209
Wire Drive Assembly
Page
Service
Support
Assistance
Hobart Welding Products
Contact your Distributor for
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