Miller BIG BLUE 401DX Owner's manual

Miller
Brand
Miller
Model
BIG BLUE 401DX
Category
Welding System
Type
Owner's manual

This manual is also suitable for

Miller BIG BLUE 401DX is a versatile welding generator capable of delivering a maximum output of 400 amps at 40 volts DC with a 40% duty cycle. It features precise amperage control for Stick (SMAW) welding applications, allowing you to tackle a wide range of welding projects. The generator provides reliable performance with its air/oil-cooled, three-cylinder Deutz F3L-1011 diesel engine and can operate for extended periods without overheating.

Miller BIG BLUE 401DX is a versatile welding generator capable of delivering a maximum output of 400 amps at 40 volts DC with a 40% duty cycle. It features precise amperage control for Stick (SMAW) welding applications, allowing you to tackle a wide range of welding projects. The generator provides reliable performance with its air/oil-cooled, three-cylinder Deutz F3L-1011 diesel engine and can operate for extended periods without overheating.

OWNER’S
MANUAL
June 1996 Form: S130 098L
Effective With Serial No. KG028902
cover_om 4/95 - ST-130 895-E PRINTED IN USA
1996 MILLER Electric Mfg. Co.
Big Blue 401DX
CC/DC Welding Generator For SMAW Welding
Rated Welding
Output
Amperage
Range
Maximum
Open-
Circuit
Voltage DC
Auxiliary Power
Rating
Engine Fuel Capacity
400 A,
40 Volts DC,
40% Duty Cycle
40 − 400 95
Single-Phase,
3 kVA/kW, 26 A,
120 V AC, 60 Hz
Deutz F3L-1011
Air/Oil-Cooled,
Three-Cylinder,
29 HP Diesel Engine
11.3 gal (42.8 L)
SUPPLEMENTARY DATA
1996 MILLER Electric Mfg. Co.
June 1996 FORM: S130 098L
Use above FORM number when ordering extra manuals.
For Big Blue 401DX
The data contained in this supplement is either in addition to or takes exception to data appearing later in this
manual.
Delete all references to the two 120 volt duplex receptacles. This unit has one 120
volt duplex receptacle and one 240 volt duplex receptacle.
NOTE
CHANGES TO SECTION 3 − INSTALLATION
Add Section 3-8. Activating The Dry Charge Battery
drybatt1 2/96 − S-0886
Remove battery from unit.
1 Eye Protection − Safety
Glasses Or Face Shield
2 Rubber Gloves
3 Vent Caps
4 Sulfuric Acid Electrolyte
(1.265 Specific Gravity)
5 Well
Fill each cell with electrolyte to
bottom of well (maximum).
Y Do not overfill battery cells.
Wait ten minutes and check elec-
trolyte level. If necessary, add elec-
trolyte to raise to proper level.
Reinstall vent caps.
6 Battery Charger
Y Read and follow all instruc-
tions supplied with battery
charger.
Charge battery for 12 minutes at 30
amperes or 30 minutes at 5 am-
peres. Disconnect charging cables
and install battery.
. When electrolyte is low, add
only distilled water to cells to
maintain proper level.
3
Tools Needed:
1
2
4
6
30 A For 12 Minutes
5 A For 30 Minutes
OR
+
−
5
S130 098 Page 2
CHANGES TO SECTION 4 − OPERATING THE WELDING GENERATOR
Replace Section 4-1. Duty Cycle And Overheating
rduty1 5/95 − SB-070 999-B
Duty Cycle is percentage of 10
minutes that unit can weld at rated
load without overheating.
Y Exceeding duty cycle can
damage unit and void
warranty.
40% Duty Cycle At 400 Amperes
4 Minutes Welding 6 Minutes Resting
CHANGES TO SECTION 5 − OPERATING AUXILIARY EQUIPMENT
Delete Section 5-1. 120 Volt Duplex And Optional GFCI Receptacles
CHANGES TO SECTION 7 − ELECTRICAL DIAGRAM
Replace Figure 7-1. Circuit Diagram For Welding Generator (See Page 3 on this Supplement)
CHANGES TO SECTION 9 − PARTS LIST
Change Parts List as follows:
Description
Part
No.
Dia.
Mkgs.** Quantity
Replaced
With
33-4 RC2 170 901 170 901 RECEPTACLE, (qty chg) 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33-4 RC1 170 901 604 103 RECEPTACLE, str dx grd 2P3W 15A 250V 1. . . . . . . . . . . . . . . . . . . . . . . . . . . .
33- Added 025 234 PLUG, str grd 2P3W 15A 250V 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33- Added 073 690 PLUG, str grd armd 2P3W 15A 125V 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
**First digit represents page no − digits following dash represent item no.
BE SURE TO PROVIDE MODEL AND SERIAL NUMBER WHEN ORDERING REPLACEMENT PARTS.
S130 098 Page 3
SC-174 646-B
Figure 7-1. Circuit Diagram For Welding Generator
  • Page 1 1
  • Page 2 2
  • Page 3 3
  • Page 4 4

Miller BIG BLUE 401DX Owner's manual

Miller
Brand
Miller
Model
BIG BLUE 401DX
Category
Welding System
Type
Owner's manual
This manual is also suitable for

Miller BIG BLUE 401DX is a versatile welding generator capable of delivering a maximum output of 400 amps at 40 volts DC with a 40% duty cycle. It features precise amperage control for Stick (SMAW) welding applications, allowing you to tackle a wide range of welding projects. The generator provides reliable performance with its air/oil-cooled, three-cylinder Deutz F3L-1011 diesel engine and can operate for extended periods without overheating.

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