Hobart Welding Products
OM-240 438B
manual
Troubleshooting
Specifications
Poor Weld Bead Characteristics
Install
Parts list
Electrical Diagrams
Symbol Usage
Welding Wire can injure
Dimension
Stick Welding Procedure
Page 68
Notes
OM-240
438 Page 64
Page 67
Page 69
Image 68
Page 67
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Contents
Description
OM-240 438B
Processes
From Hobart to You
Protect Your Investment
Table of Contents
10-1
10-2
10-3
11-1
Symbol Usage
Arc Welding Hazards
Electric Shock can kill
HOT Parts can burn
Fumes and Gases can be hazardous
Buildup of GAS can injure or kill
ARC Rays can burn eyes and skin
Welding can cause fire or explosion
Engine Hazards
Hydraulic Hazards
Use only genuine replacement parts from the manufacturer
Compressed Air Hazards
Hydraulic Fluid can injure or kill
Compressed AIR Equipment can injure or kill
Welding Wire can injure
Fire or Explosion hazard
Falling Equipment can injure
Overheating can damage motors
Principal Safety Standards EMF Information
California Proposition 65 Warnings
Radiation can cause interference
ARC Welding can cause interference
Signification des symboles
− Consignes DE Sécurité − Lire Avant Utilisation
UN Choc Électrique peut tuer
Indique des instructions spécifiques
LES Pièces Chaudes peuvent provoquer des brûlures
LES Fumées ET LES GAZ peu- vent être dangereux
LE Soudage peut provoquer un incendie ou une explosion
LE Bruit peut affecter l’ouïe
’EXPLOSION DE LA Batterie peut provoquer des blessures
Les Pièces Mobiles peuvent causer des blessures
LA Chaleur DU Moteur peut pro- voquer un incendie
Les Pièces Mobiles peuvent causer des blessures
Lire LES Instructions
Risque D’INCENDIE OU
LES Fils DE Soudage peuvent provoquer des blessures
LA Chute DE L’ÉQUIPEMENT peut provoquer des blessures
LE Surchauffement peut endommager le moteur électrique
LE Soudage À L’ARC risque de provoquer des interférences
Proposition californienne 65 Avertissements
Principales normes de sécurité
Informations relatives aux CEM
En ce qui concerne les implants médicaux
− Specifications
Symbol Definitions
Weld, Power, and Engine Specifications
− Definitions
Weight 562 lb 254 kg
Dimensions, Weights, And Operating Angles
Complete Parts List is available at wwwHobartWelders.com
Dimensions For Units With Optional Running Gear
Dimensions
Duty Cycle
Welding Amperes
Fuel Consumption Subaru-Powered Units
Fuel Consumption Kohler-Powered Units
Generator Power Curve
For CC/AC Mode
For CC/DC Mode
Volt-Ampere Curves
Serial Number And Rating Label Location
− Installation
Installing Welding Generator
Grounding Generator To Truck Or Trailer Frame
Oil
Engine Prestart Checks Subaru-Powered Units
Oil Check
To improve cold weather starting
Engine Prestart Checks Kohler-Powered Units
Full
Installing Exhaust Pipe
Connecting Or Replacing the Battery
Connect negative − battery cable last
+ − + −
Tools Needed 3/4
Connecting To Weld Output Terminals
Stop engine Failure to properly connect
Selecting Weld Cable Sizes
150 ft 200 ft 250 ft
350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 m
100 150 200 250
Engine Control Switch
− Operating the Welding Generator
Front Panel Controls
Fine Control
Cold Weather Engine Operation
Infrequently
Loaded
Frequently
Electrode
Typical Stick Welding Connections And Control Settings
Stop engine
− Operating Auxiliary Equipment
Standard Receptacles
Simultaneous Weld And Power
Wiring Optional 240 Volt Plug
Current Available in Amperes 240
Receptacle
− Maintenance SUBARU-POWERED Units
Maintenance Label Subaru-Powered Units
Routine Maintenance Subaru-Powered Units
Stop engine before maintaining
100
200
Stop engine and let cool
Servicing Air Cleaner Subaru-Powered Units
Servicing Optional Spark Arrestor Subaru-Powered Units
Oil Fill Oil Check
Oil Drain Valve Oil Filter
Adjusting Engine Speed Subaru-Powered Units
Idle Speed Adjustment
Fuse F1 See Section
Overload Protection Subaru-Powered Units
Stop engine. Disconnect negative − battery cable
− Maintenance − KOHLER-POWERED Units
Maintenance Label Kohler-Powered Units
Routine Maintenance Kohler-Powered Units
Hours Nl Weld Cables ~ Slip Rings Nl Brushes OM-240 438
Servicing Air Cleaner Kohler−Powered Units
Stop engine and let cool Oil Drain Valve
2 ID x 7 in Hose Oil Filter
Close valve and valve cap
Full Before adding oil Running engine
Adjusting Engine Speed Kohler-Powered Units
Adjustment Nut
Loosen lock nut. Turn adjustment
Turn idle speed screw for fine ad- justments
If a fuse opens, it usually indi
Overload Protection Kohler-Powered Units
Servicing Optional Spark Arrestor Kohler-Powered Units
− Troubleshooting
Welding Troubleshooting
Generator Power Troubleshooting
Trouble Remedy
Check fuel level
Engine Troubleshooting
Check receptacle wiring and connections
− Parts List
Control switch S2, and throttle solenoid TS1
Recommended Spare Parts
Recommended Spare Parts
SOCKET/WRENCH Selection Table Standard Metric
− Electrical Diagrams
Circuit Diagram For Welding Generator
240 424-A
− Generator Power Guidelines
Selecting Equipment
Grounding When Supplying Building Systems
How Much Power Does Equipment Require?
Use ground device as stated
Electrical codes
Approximate Power Requirements For Industrial Motors
Approximate Power Requirements For Farm/Home Equipment
Industrial Motors Rating Starting Watts Running Watts
Farm/Home Equipment Rating Starting Watts Running Watts
Approximate Power Requirements For Contractor Equipment
Contractor Rating Starting Watts Running Watts
Power Required To Start Motor
How Much Power Can Generator Supply?
Single-Phase Induction Motor Starting Requirements
KVA/HP x HP x 1000 / Volts = Starting Amperage
Typical Connections To Supply Standby Power
Tional, state, and local codes
Selecting Extension Cord Use Shortest Cord Possible
Stick Welding Procedure
− Stick Welding Smaw Guidelines
Electrode touches work
Tools Needed Equipment Needed Piece Weld current can damage
Electrode and Amperage Selection Chart
Striking an Arc
Scratch Technique
Tapping Technique
Poor Weld Bead Characteristics
Good Weld Bead Characteristics
Positioning Electrode Holder
Groove Welds Fillet Welds
Electrode Angle
Conditions That Affect Weld Bead Shape
Electrode Movement During Welding
Tee Joint
Butt Joints
Lap Joint
Troubleshooting
Weld Test
To 3 51-76 mm .4 mm
Possible Causes Corrective Actions
Metal remains
Lack of Penetration Good Penetration
Good Penetration Excessive Penetration
OM-240 438
OM-240 438
OM-240 438
Assistance
Service
Support
Contact your Distributor for
Hobart Welding Products
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