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Hobart Welding Products
OM-493
manual
Models:
OM-493
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Troubleshooting
Specification
Poor Weld Bead Characteristics
Install
Parts list
Electrical Diagram
Symbol Usage
Connecting the Battery
Dimension
Maintenance
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Contents
OM-493
Processes
Description
From Hobart to You
Table of Contents
Page
Electric Shock can kill
Symbol Usage
Arc Welding Hazards
ARC Rays can burn eyes and skin
Engine Hazards
Engine Exhaust Gases can kill
Battery Explosion can Blind
Moving Parts can cause injury
Engine Heat can cause fire
Radiation can cause interference
Principal Safety Standards
EMF Information
ARC Welding can cause interference
UN Choc Électrique peut tuer
Signification des symboles
Consignes DE Sécurité Lire Avant Utilisation
LES Fumées ET LES GAZ peuvent être dangereux
DES Pièces Chaudes peuvent provoquer des brûlures graves
LE Soudage peut provoquer un in- cendie ou une explosion
DES Particules Volantes peuvent blesser les yeux
LE Bruit peut affecter l’ouïe
LA Chaleur DU Moteur peut pro- voquer un incendie
DES Organes Mobiles peuvent provoquer des blessures
’EXPLOSION DE LA Batterie peut
LA Chute DE L’APPAREIL peut blesser
LE Soudage À L’ARC risque de provoquer des interférences
Principales normes de sécurité
Information sur les champs électromagnétiques
Consignes relatives aux stimulateurs cardiaques
Weld, Power, and Engine Specifications
Specifications
Symbol Definitions
Definitions
Dimensions, Weights, and Operating Angles
Auxiliary Power Curve
Dimensions
Duty Cycle
Exceeding duty cycle can damage unit and void warranty
Fuel Consumption
Continuous Welding
Volt-Ampere Curve
Installation
Installing Welding Generator
Movement Do not lift unit from end Airflow Clearance
Engine Prestart Checks
Fuel
Read and follow all instruc
Activating The Dry Charge Battery If Applicable
Do not overfill battery cells
Charger
Tools Needed 1/2
Connecting the Battery
Installing Exhaust Pipe
Connect negative cable last
100 ft 30 m Or Less
Connecting to Weld Output Terminals
Selecting Weld Cable Sizes
10 100% Duty Cycle
Operating the Welding Generator
Engine Control Switch
Do not switch under load
Front Panel Controls
Weld Current
Operating Auxiliary Equipment
Standard Receptacles
120V 240V
Gfci Receptacle Option
Optional Auxiliary Power Receptacles
Generator
120 V 20 a AC Gfci Recep
Maintenance
Maintenance Label
Overload Protection
Servicing Air Cleaner
Stop engine. Disconnect negative battery cable
Stop engine
Stop engine and let cool
Changing Engine Oil, Oil Filter, and Fuel Filter
Full Tools Needed
Oil Drain Valve 2 ID x 12 in Hose Oil Filter
Adjusting Engine Speed
Idle Speed Adjustment
Weld/Power Speed Adjustment
Servicing Optional Spark Arrestor
Welding
Troubleshooting
Auxiliary Power
Trouble Remedy
Switch S2, and throttle solenoid TS1
Engine
Electrical Diagram
Circuit Diagram For Welding Generator
Auxiliary Power Guidelines
Selecting Equipment
Grounding Generator To Truck Or Trailer Frame
Earth ground if supplying
Grounding When Supplying Building Systems
How Much Power Does Equipment Require?
Amperes x Volts = Watts
Industrial Motors Rating Starting Watts Running Watts
Approximate Power Requirements For Industrial Motors
Approximate Power Requirements For Farm/Home Equipment
Farm/Home Equipment Rating Starting Watts Running Watts
Approximate Power Requirements For Contractor Equipment
Contractor Rating Starting Watts Running Watts
Single-Phase Induction Motor Starting Requirements
Power Required To Start Motor
How Much Power Can Generator Supply?
KVA/HP x HP x
Typical Connections To Supply Standby Power
240 120 Ground
Selecting Extension Cord Use Shortest Cord Possible
Current Load Watts Amperes
Stick Welding Procedure
Weld current starts when electrode touches work- piece
Stick Welding Smaw Guidelines
Electrode and Amperage Selection Chart
Striking an Arc Scratch Start Technique
Striking an Arc Tapping Technique
Positioning Electrode Holder
Poor Weld Bead Characteristics
Good Weld Bead Characteristics
10-30 9090 End View of Work Angle
Conditions That Affect Weld Bead Shape
Electrode Movement During Welding
Tee Joint
Butt Joints
Lap Joint
16 in 1.6 mm Tack Welds
Weld Test
Troubleshooting Porosity
Troubleshooting Excessive Spatter
Possible Causes Corrective Actions
Troubleshooting Incomplete Fusion
Troubleshooting Lack Of Penetration
Troubleshooting Excessive Penetration
Troubleshooting Burn-Through
Troubleshooting Waviness Of Bead
Troubleshooting Distortion
Parts List
12-3
Dia Part Description Mkgs Quantity
Panel, Front w/Components
Panel, Front w/Components -1 Item
Generator -1 Item
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Support
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