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Welding System
Miller Electric
Big Blue 251D
manual
Models:
Big Blue 251D
1
57
60
60
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60 pages
39.47 Kb
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60
Troubleshooting
Specification
Install
Parts list
Electrical Diagram
Symbol Usage
Maintenance
RUN-IN Procedure
Adjusting Engine Speed
Servicing Air Cleaner
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Contents
Description
Processes
Visit our website at OM-480128 576AC January
Engine Driven Welding Generator
From Miller to You
Table of Contents
Options and Accessories Warranty
Arc Welding Hazards
Symbol Usage
Engine Hazards
Compressed Air Hazards
California Proposition 65 Warnings
Principal Safety Standards
EMF Information
Radiation can cause interference
− Consignes DE Sécurité − Lire Avant Utilisation
Signification des symboles
UN Choc Électrique peut tuer
LES Fumées ET LES GAZ peuvent être dangereux
DES Particules Volantes peuvent blesser les yeux
LE Soudage peut provoquer un in- cendie ou une explosion
DES Pièces Chaudes peuvent provoquer des brûlures graves
LE Bruit peut affecter l’ouïe
DES Organes Mobiles peuvent provoquer des blessures
’EXPLOSION DE LA Batterie peut
LA Chaleur DU Moteur peut pro- voquer un incendie
’AIR Comprimé peut provoquer des blessures
Information sur les champs électromagnétiques
Principales normes de sécurité
− Definitions
Symbols And Definitions
− Specifications
Weld, Power, And Engine Specifications
Dimensions, Weights, And Operating Angles
Exceeding duty cycle can damage unit and void warranty
Curve shows typical fuel use under weld or power loads
Fuel Consumption
Duty Cycle And Overheating
Volt-Ampere Curves
AC Generator Power
Optional AC Power Plant Curves
− Installation
Installing Welding Generator
Connecting The Battery
Engine Prestart Checks
Installing Muffler Pipe
Stop engine and let cool
Fuel Do not use gasoline. Gasoline
Connecting To Weld Output Terminals
Installing Ether Cylinder Optional Ether Starting Aid
150 ft 200 ft 250 ft
Selecting Weld Cable Sizes
350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 m
Put terminals
Controls See Section
− Operating the Welding Generator
Remote A/V Control
Description Of Front Panel Controls See Section
Stop engine and fix trouble if either light goes on
Do not use Ether if engine is running
− Operating Auxiliary Equipment
Volt Duplex And Optional Gfci Receptacles
X 15 a + 120 V x 10 a = 3.0 kVA/kW OM-480
240 V 15 a AC Receptacle RC1
Volt Duplex Receptacle Optional
Circuit Breakers CB1 And CB2
X 10 a + 120 V x 5 a = 3.0 kVA/kW
Connecting Optional AC Power Plant
240 Volt Twistlock Receptacle Optional
− Maintenance and Troubleshooting
Maintenance Label
Servicing Air Cleaner
To change oil and filter
Servicing Fuel And Lubrication Systems
To replace primary fuel filter
To replace secondary fuel filter
Adjusting Engine Speed
Standard Models
Models With Automatic Idle Optional
Full Empty
Overload Protection Servicing Optional Ether Starting Aid
Troubleshooting
Inspecting And Cleaning Optional Spark Arrestor
Stop engine and let cool. Reinstall cleanout plug
Welding
Check connections to ac power plant see Section
Generator Power
Engine
Maximum see Section
Circuit Diagram For Welding Generator
− Electrical Diagram
− RUN-IN Procedure
Wetstacking
Welding Generator
Procedure at less than
Run-In Procedure Using Load Bank
Stop engine Do not touch hot exhaust
From flammables Do not Perform
Bank/grid
Run-In Procedure Using Resistance Grid
From flammables
Do not perform run-in
− Generator Power Guidelines
Selecting Equipment
Grounding Generator To Truck Or Trailer Frame
How Much Power Does Equipment Require?
Grounding When Supplying Building Systems
Earth ground if supplying
Amperes x Volts = Watts
Approximate Power Requirements For Farm/Home Equipment
Approximate Power Requirements For Industrial Motors
Industrial Motors Rating Starting Watts Running Watts
Farm/Home Equipment Rating Starting Watts Running Watts
Contractor Rating Starting Watts Running Watts
Approximate Power Requirements For Contractor Equipment
How Much Power Can Generator Supply?
Power Required To Start Motor
Single-Phase Induction Motor Starting Requirements
KVA/HP x HP x 1000 = Starting Amperage
Work like a Pro
Typical Connections To Supply Standby Power
Current Load Watts Amperes
Selecting Extension Cord Use Shortest Cord Possible
OM-480
125 124 123 122
− Parts List
120 121 117
116
2526 126
Dia Part Description Quantity Mkgs
128
111
Panel, Front w/Components -1Item
Panel, Front w/Components -1Item 111 Cont’d
Generator
Generator -1Item
Includes
114
Page
Page
Service
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