Standard features include: Stick, Flux Cored, MIG and Lift-Arc™ TIG.Other features include digital preset weld meters, output contactorcontrol, automatic idle and 120 V block heater.

ProcessesStick (SMAW)Flux Cored (FCAW) MIG (GMAW)DC TIG (GTAW) Air Carbon Arc (CAC-A)

Rated: 1/4 in (6.4 mm) carbons Air Plasma Cutting and Gouging with

optional Spectrum models

Heavy IndustrialApplicationsPipe Welding Mechanical ContractorQuick

Specs

Big Blue® 350 PipePro®

Diesel Engine-Driven Welder/AC Generator

Issued January 2011 • Index No. ED/5.4

Auto Remote Sense™ (ARS) detectsif a remote control is plugged intothe 14-pin receptacle and eliminatesconfusion of a remote/panel switch.

Easy to use. Simple controls make it easy to setup and weld!

Infinite arc control allows the arccharacteristics to be changed forspecific applications in Stick,FCAW and MIG.

LINE-X® cover is workbench toughand provides superior impact,corrosion and abrasion protection.

The Power of Blue®.

Welder/generator is warranted by Miller for 3 years, parts and labor.Engine is warranted separately by engine manufacturer.

Output Range DC Stick 20 – 400 AFCAW/MIG 14 – 40 VDC TIG 20 – 400 A

Generator Output Rated at 104˚F (40˚C) 12,000 Watts Peak10,000 Watts Continuous

Quiet operation. Improves worksite communication.

Thermal overload protectionprevents machine damage if theduty cycle is exceeded or airflow is blocked.

Optional Stainless SteelAppearance Package providesadditional exterior protection towithstand corrosive environments.

Accu-Rated™–Not Inflated Generator Power

The Professional Welder’s Choice—designed exclusively for transmissionpipeline work, the Big Blue 350PipePro offers Stick as well asMIG/FCAW welding capabilities tomeet high-strength steel requirementsand is ideal for the most demandingpipeline jobs.

Superior arc performance • Adjustable arc control• Hot Start™ (Stick)• FCAW/MIG arc performance• Lift-Arc™ TIG with Auto-Stop™

Meter maintenance displays• Fuel gauge• Hour meter function• Oil change interval• High coolant temperature and

low oil pressure shutdowns • Low fuel shutdown — engine

shuts down before system runsout of fuel, making restarts easy.

Engine coolant temperature gauge.

The Vault — ultimate controlboard reliability. See page 4.

Miller Electric Mfg. Co.An Illinois Tool Works Company1635 West Spencer StreetAppleton, WI 54914 USA

Web Sitewww.MillerWelds.com

Equipment Sales US and CanadaPhone: 866-931-9730FAX: 800-637-2315International Phone: 920-735-4554International FAX: 920-735-4125

Mitsubishi S4L2 4-cylinder diesel.Heavy-duty low-speed industrialengine is designed to operate over 10,000 hours before the first basic overhaul. Backed byworldwide support and service.

EPA Tier 4iCompliantEPA Tier 4i

CompliantEPA Tier 4i

CompliantEPA Tier 4i

Compliant

Big Blue 350 PipePro engine drive shown withrecommended SuitCase® X-TREME™ 8HD

wire feeder (see pg 5 for more information).

Performance Data

2

Specifications (Subject to change without notice.)

Engine Specifications (Engines warranted separately by the engine manufacturer.)

Engine Brand

MitsubishiS4L2

Features

EPA Tier 4i compliant, indirect-injected, liquid-cooled engine. Right-side service accesswith intervals of 500 hrs for oil and filters.

HP

24.4

Type

4-cylinder, industrialliquid-cooled, diesel

Engine Speeds

1850 RPM weld(1500 RPM idle)

Fuel Capacity

11.5 gal (43.5 L)

Oil Capacity

6.3 qt (6 L)

CoolantCapacity

10 qt (9.5 L)

Automatic EngineShutdown

Low Oil Pressure, High CoolantTemperature,Low Fuel Level

SIMULTANEOUS WELDING AND POWER

3503002251751257525

WeldAmperes

Total PowerAvailable (Watts) 120 V 240 V

1,0004,5007,5009,00010,00010,00010,000

8.337.562.57583.383.383.3

4.218.831.337.541.641.641.6

STICK MODE V/A CURVE — MIN/MAX DIG

DC V

OLTS

DC AMPERES

0 100 200 300 400

100

80

60

40

20

0

FCAW/MIG MODE V/A CURVE

FUEL CONSUMPTION CURVE

IDLE

DC WELD AMPERESAT 100% DUTY CYCLE

U.S.

GAL

/HR.

0.00

0.25

0.50

0.75

1.00

1.25

1.50

1.75

2.00

0 50 100 150 200 250 300 350 400

GENERATOR POWER CURVE

0 2010 30 40 6050

AC AMPERES IN 240 V MODE

210

230220

240250260270280

190200

180

AC V

OLTS

DUTY CYCLE CURVE

WEL

D AM

PERE

S

% DUTY CYCLE

0 2010 30 40 50 60 70 80 90 100

400

300

200

250

350

450

DC TIG MODE V/A CURVE

DC V

OLTS

DC AMPERES

0 100 200 300 400

100

80

60

40

20

0

DC V

OLTS

DC AMPERES

0 100 200 300 400

60

40

20

0

MAX

MIN

MAX

MIN

POWER WHILE NOT WELDING

WeldMode

CC/DC

CV/DC

Process

TIG

Stick

FCAW/MIG

WeldOutputRange

20 – 400 A

20 – 400 A

14 – 40 V

Weld Output Rated at 104˚F (40˚C)

400 A at 26 VDC, 40% Duty Cycle350 A at 24 VDC, 100% Duty Cycle

350 A at 34 VDC, 60% Duty Cycle325 A at 33 VDC, 100% Duty Cycle

350 A at 31.5 VDC, 100% Duty Cycle

Max. Open-CircuitVoltage

85 VDC

Generator Power Output Rated at 104˚F (40˚C)

12,000 Watts Peak10,000 Watts Continuous 1-phase, 84/42 A,120/240 VAC, 60 Hz

Dimensions

H: 32 in (813 mm)

W: 26-1/4 in(667 mm)

D: 56 in (1422 mm)

Weight(without fuel)*

Net: 1018 lb (462 kg)

Ship: 1068 lb (484 kg)

Sound Levels atRated Output, 23 ft (7 m)

72 dB (97 Lwa)

*Additional 82 lb (37 kg) when fuel tank is full.

Meets NEMA and IEC output ratings.Certified by Canadian Standards Association to both the Canadian and U.S. Standards.

3

Function Guide1. Self-Calibrating Digital Weld Meters with

Fault Code Indication display preset oractual weld parameters.

2. Adjustable Arc Control adjusts DIG whenprocess control is in Stick mode and adjustsinductance when process control is inFCAW or MIG mode. The amount of DIGdetermines how much amperage (heat)varies with Stick arc length. Inductancedetermines the “wetness” of the weld puddle.

3. Hot Start™ provides positive Stick electrodestarts making it easy to start all types of electrodes and it also works great forbead tie-ins.

4. Great FCAW/MIG Performance and Arc Starts make the Big Blue® 350PipePro’s arc best in its class. Easy to runall wires from .023 in solid wires to largediameter 5/64 in flux cored wires.

5. Lift-Arc™ TIG with Auto-Stop™

6. Standard 14-Pin Receptacle for simpleconnection of remote controls and wirefeeders. It features Auto Remote Sense™

which automatically switches from panel toremote amperage/voltage (A/V) control withremote connected. Eliminates confusion ofthe Panel/Remote A/V switch.

7. Weatherproof Lexan® Nameplate is superdurable and resists cracking and fading.Color coding is for ease of operation.

8. Engine Coolant Temperature Gaugedisplays coolant temper ature. Engine stopsif temperature exceeds 230˚F (110˚C).

9. Meter Maintenance Displays show fuellevel, engine hours, oil change interval andhi temp/low pressure/low fuel shutdowninformation.Low Fuel Shutdown shuts engine off priorto running out of fuel to prevent loss of fuelin the system, and make restarts easy.Display will read noFUEL. Turn the machineoff, add fuel, and restart.

10. Glow Plugs assist in cold weather starting.

11. Engine Control Switch is used to start theengine and then select between Auto Idleand High Speed Lock.

12. Amperage/Voltage Adjust Control

13. 120 VAC and 240 VAC Receptacles withCircuit Breakers (optional 120 VAC GFCIreceptacles available).Note: For matching plug, order #119 172.

14. Weld Output Terminals

1

9

10

8

11

12

13

14

32

6

4

5

7

ARC START with Lift-Arc™

Lift at any angleTouch or scratchShielding

gas

Shieldinggas

Arc

Workpiece

ARC END with Auto-Stop™

While welding

Shieldinggas

Arc

For Auto-Stop, lift up to terminate arc

Arc endswithout

flare

Move backdown to

maintain gascoverage

Lift up until arc

ends

Workpiece

• Eliminates need fora remote control

• Maintains shieldinggas coverage

• Eliminates tungstenand workpiececontamination

• Eliminatesunwanted arcstrikes outside theweld area

• Reduces or eliminates sticking• Reduces or eliminates electrode/

work contamination• Low open-circuit voltage

4

Rigorous Testing for Tough,Real-World ConditionsTo prove our machines go to thelimit, Miller industrial enginedrives are put to the test in veryextreme environmental conditions. • Airborne Dust and Sand —

Critical components areexposed to abusive airborneparticles in a special testingchamber for weeks, helpingmake sure they’ll operate whilefacing extreme levels of dirt,dust or sand on the job site.

• Humidity and Corrosion —Inside Miller’s Houston testingroom, critical components aresubjected to extendedmoisture and corrosive saltexposure to ensure they’ll run even when exposed to humidclimates, corrosive coastal environments, and driving rain.

• Temperature Extremes — Miller’s industrial engine drives are tested to ensure performance in scorching heat. All Millerengine driven machines are weld rated at 104˚F, but actual tests are conducted up to 122˚F to assure peak performance.

• Jobsite/Over-the-Road Abuse — Miller industrial engine drives are shaken for hours on transportation bed simulators,subjected to severe vibration, and test-dropped and jerked toensure they’ll withstand the stresses that can shut downcompetitive machines.

• Continuous Operation — Miller’s industrial engine drives runday and night, in all weather conditions, to assure they’ll performwithout interruption in the field.

Superior Circuit Board DesignMiller’s critical circuit boards are engineered to carry low powerand low heat to reduce thermal stress and minimize expansionand contraction. In contrast, our competitor’s boards carry highpower and high heat, making them more vulnerable to failure.

What Makes Miller Industrial Engine Drives So ?

“The Vault” Makes Upgrading to Miller CC/CV UnitsWorry-FreeConcerns with circuit board reliability have resulted in someoperators steering clear of CC/CV welder/generators — eventhough they offer a superior arc and multiple welding processes.Miller’s circuit board reliability isn’t a concern since all Big Bluemultiprocess industrial engine drives feature the Vault.

Created out of two aluminum halves sealed with silicone, as wellas watertight harness connections, the Vault provides a cleancircuit board environment, protecting the electronics — andcontrolling output — in heavy industrial applications. No othercompetitor protects their electronics with a sealed vault, leavingcritical circuit boards exposed to harsh elements that can disruptthe machine’s electronics, and therefore, its operation.

“The Miller 350 PipePro makes my job easier every day. It runs a 3/16 electrode downhill smoother and keeps it litbetter than any machine I’ve used.”

Jerry Morley, Gas Field Specialists Inc,Plumbers and Steamfitters #267

Why Industrial Engine DriveCustomers Choose MillerThe ultimate test of Miller’sreliability is how it performs inthe field. The quote on the leftprovide a glimpse of how Millerindustrial engine drives performfor customers. Read the fullstories, and many othersdemonstrating Miller’s superiorreliability, at MillerWelds.com.

5

SuitCase™ X-TREME™ 8HD Specifications (Subject to change without notice.)

Wire Speed

Low Range:25–200 IPM (.65–5.2 m/min)High Range:175–780 IPM (4.5–19.8 m/min)dependent on arc voltage

Max. SpoolSize Capacity

8 in (203 mm)10 lb (4.5 kg)

Net Weight

30 lb(14 kg)

Dimensions

H: 12-3/4 in(324 mm)

W: 7-1/4 in (184 mm)

D: 18 in (457 mm)

Input Power

Operates onopen-circuitvoltage andarc voltage: 14 – 48 VDC/110 Max OCV

Electrode Wire Diameter Capacity

Flux Cored:.030 – .078 in (0.8 – 2 mm)Solid Wire:.023 – .062 in (0.6 –1.6 mm)

Welding PowerSource Type

CC or CV DCpower sources.AC type notrecommended.

Input Welding Circuit Rating

330 A at 60% Duty Cycle

3

9874

1

2 6

5

SuitCase X-TREME 8HD

Internal Side View

Internal Control Panel

OF

F

1. Wire Speed Control2. Jog/Purge Switch3. Voltmeter 4. Wire Speed/Amperage Meter (Optional)5. Trigger Hold Switch 6. Power Control Switch7. Soft Start Switch8. WFS Range Switch9. CC/CV Switch

SuitCase™ X-TREME™ 8HD Control Panel Drive Roll Kits (Order from Miller Service Parts.)

“U” cogged forextremely soft wire

“V” knurled or soft- shelled coredfor hard-shelled wires (i.e., hard

Wire size cored wires facing types)

1/16 in (1.6 mm) #079 609 #079 614

.068/.072 in (1.8 mm) #089 984 —

5/64 in (2.0 mm) #079 610 #079 615

Select drive roll kits from chart below according to type and wiresize being used. Drive roll kits include 2 drive rolls, the necessaryguides and feature an anti-wear inlet guide.

Use with CC/CV, DC Power Sources

SuitCase® X-TREME™ 8HD Features

Potted and trayed main printed circuit board for the harshest environments adds exceptionalreliability. Board has full-trigger isolation so ashorted gun trigger will not affect feeder operation.

Polypropylene case with built-in slide rails andthe ability to open the door to change wire withfeeder in vertical position.

Digital meters with SunVision™ technology candisplay voltage and wire speed, and also amperageif desired. Meters can be seen clearly even indirect sunlight.

High-torque motor specifically designed forfeeding 5/64 in flux cored wire. The motor andgear train were optimized to push large diametercore wire without significantly inceasing theweight of the feeder.

Excellent starts and superior arc performancefor all types and sizes of wires whether using aCV or CC power supply.

Double-filtered gas valve helps keep dirt fromclogging and affecting gas flow.

Trigger hold, wire jog, and gas purge are alllocated on front panel.

Dual schedule operation when connected to aBernard® PipePro Dura-Flux™ gun, reduces wirefeed speed in schedule B for welding in theoverhead postion.

Wider voltage range for small and large wireswith no contactor chatter or arc outages.

SuitCase X-TREME 8HD is designedspecifically to weld pipe. It has the power to push large diameter flux cored wire for maximum productivity, plus available dual schedule operation for welding on thebottom of the pipe.

6

HWY-224 Trailer #043 805 For highway use.OFR-224 Trailer #043 802 For off-road use.A 2650 lb (1202 kg) capacity trailer.Welded steel tubing frame, heavy-duty axlewith roller bearing hubs and leaf-springsuspension. Includes jack stand, 2 in (50 mm) ball hitch. HWY-224 also includesfenders and lights.

Cable Tree #043 826Provides an area to conveniently wrap weldcables and extension cords.

Dual Hitch #300 8312 in (50 mm) ball hitch and 3 in (76 mm)lunette eye in one reversible assembly.

4 holes F

Front Panel

C

ED

A B

Trailers and Hitches (Note: Trailers are shipped unassembled.)

Shown with ball hitch,fenders and lights.

Height: 32 in (813 mm)Width: 26-1/4 in (667 mm)Depth: 56 in (1422 mm)

A. 27-3/4 in (705 mm)B. 26-1/4 in (667 mm)C. 52 in (1321 mm)D. 2 in (51 mm)E. 56 in (1422 mm)F. 9/16 in (14 mm) dia.

Mounting Specifications

Gross VehicleWeight Rating

2960 lb(1343 kg)

Gross AxleWeight Rating

3500 lb(1588 kg)

Height of Bed

18-1/2 in(470 mm)

RoadClearance

7-1/2 in(191 mm)

NetWeight

320 lb(145 kg)

Track (Centerto center oftires)

52 in(1321 mm)

Standard Tires(Standard ratingor P-size rating)

B78-13

Dimensions

Length: 105 in (2667 mm)Width: HWY– 59-1/2 in (1511 mm)*

OFR–58-7/16 in (1484 mm)

*Width at outside of fenders.

Model

HWY-224OFR-224

NetPayload

2650 lb(1202 kg)

Trailer Specifications (Subject to change without notice.)

Adapter Cord, Full KVA #300 517 FieldNEMA 14-50P to NEMA 6-50R. Adaptsengine drive 120/240 V plug to commonMillermatic® and Spectrum® 240 V plug.

Full KVA Plug Kit #119 172 Field120/240 VAC, 50 A plug (NEMA14-50P) to fit full KVA receptacle.

Engine Filter Kit #244 711 Field Includes all filters required for properengine maintenance. Oil filter, primary andsecondary fuel filter, and primary air filter.

Spark Arrestor (Muffler) Kit #300 585 FieldPrevents particles from leaving the mufflerthat could potentially start a fire. Mandatorywhen operating on California grasslands,brush, or forest-covered land, and all nationalforests. For other areas, check your stateand local laws. Meets U.S. Forest ServiceStandard 5100-1B.

FA-1D Lockable Flame ArrestorFuel Cap #043 947Can be padlocked to preventvandalism. Flame arrestor prevents

flames or sparks from entering the fuel tank.

Protective Cover #195 301 FieldBlue water-resistant cover with Miller logoresists stains and mildew, and protects thefinish of your welder.

Flux Cored (FCAW) or MIG (GMAW)

SuitCase® X-TREME™ 8HD #300 594-003SuitCase® X-TREME™ 8VS #951 182SuitCase® X-TREME™ 12VS #951 184Lightweight, voltage-sensing wire feedersinclude secondary contactor and gas valve.For VS models see Lit. Index No. M/6.41.

SuitCase® 8RC #951 186 SuitCase® 12RC #951 188Lightweight, flexible feeders run a variety of wires up to .062 in diameter. Includesremote voltage control and drive roll kit.See Lit. Index No. M/6.5.

Flux Cored (FCAW) and MIG (GMAW) GunsA com plete line of dependable FCAW andMIG guns are available. See Bernard Lit.Index No. SPEC DFP-1.0 for the Dura-FluxPipePro gun. See Lit. Index Nos. AY/15.0,AY/16.0 and AY/17.0 for Miller guns.

Remote ControlsWireless Remote HandControl #300 430For remote current,voltage and contactorcontrol. Receiver plugsdirectly into the 14-pin

receptacle of Miller machine. 300 ft (91.4 m) operating range.

PRHC-14 Hand Control #195 511Complete current or voltage control brings 120 volts GFCI power to work area in asingle cord. Housed in a durable lightaluminum case and includes 125 ft (38 m)cord with plugs.

Extension Cords for 14-Pin Remote Controls or 24 VAC Wire Feeders#242 208 025 25 ft (7.6 m)#242 208 050 50 ft (15.2 m)#242 208 080 80 ft (24.4 m)

Genuine Miller Accessories FemaleReceptacle

7

14-PinPRHC-14

Work

Stick ElectrodeRemote Control

Work

SuitCase8RC/12RC

Lift-Arc TIG

Work

Flux Cored or MIG Gun

Flux Cored or MIG Gun

Voltage-Sensing Feeder

Spoolmatic 30A Gun

Or OtherHigh-Frequency Starting Aid

Work

14-Pin

14-PinWC-24

14-PinRHC-14

TIGTorch

Work

14-Pin

HF-251D-1

TIG Torchwith Valve

Work

Work

Stick Electrode

SuitCaseX-TREME

8HD/8VS/12VS

Stick (SMAW) Basic EquipmentPRHC-14 #195 511

Electrode Hot

Remote On/Off Required

Stick (SMAW) Basic EquipmentRHC-14 #129 340

Flux-Cored/MIG (FCAW/GMAW) Basic EquipmentSuitCase® X-TREME™ 8HD #300 594-003SuitCase® X-TREME™ 8VS #951 182SuitCase® X-TREME™ 12VS #951 184

Flux-Cored/MIG (FCAW/GMAW) Basic EquipmentSuitCase® 8RC #951 186SuitCase® 12RC #951 188

Aluminum MIG (GMAW) Basic EquipmentSpoolmatic® 30A #130 831WC-24 #137 549

TIG (GTAW) Basic EquipmentHF-251D-1 #042 388*Dynasty® 200 SD #907 099Dynasty® 200 DX #907 099-01-1*TIG power cable adapter required

Lift-Arc™ TIG (GTAW) Basic Equipment

Typical Installations

Litho in USA

Distributed by:

Equipment and Options Stock No. Description Qty. Price

Big Blue® 350 PipePro® #907 428 Standard model#907 428-00-1 Stainless Steel Package

Field AccessoriesAdapter Cord, Full KVA #300 517 FieldFull KVA Plug Kit #119 172 FieldEngine Filter Kit #244 711 Field. Includes air, oil and fuel filtersSpark Arrestor (Muffler) Kit #300 585 FieldFA-1D Lockable Flame Arrestor Fuel Cap #043 947 FieldProtective Cover #195 301 Field

Stick Welding Leads See page 5

Flux Cored/MIG Welding SuitCase® X-TREME™ 8HD #300 594-003 With dual schedule when used with a Bernard® PipePro Dura-Flux™ gunSuitCase® X-TREME™ 8VS #951 182 See Lit. Index No. M/6.41SuitCase® X-TREME™ 12VS #951 184 See Lit. Index No. M/6.41SuitCase® 8RC #951 186 See Lit. Index No. M/6.5SuitCase® 12RC #951 188 See Lit. Index No. M/6.5Flux Cored (FCAW) and MIG (GMAW) Guns See Bernard Lit. No. SPEC DFP-1.0 for the Dura-Flux PipePro gun.

See Lit. Index Nos. AY/15.0, AY/16.0 and AY/17.0 for Miller gunsSpoolmatic® 30A Spool Gun #130 831 Requires WC-24 Control. See Lit. Index No. M/1.73WC-24 Control #137 549 See Lit. Index No. M/1.5XR™ Wire Feeder Control and Guns See Lit. Index No. M/1.7, M/1.71, and M/1.73

TIG Welding HF-251 Series #042 388 115 VAC. See Lit. Index No. AY/5.0

Multiple Operator WeldingXMT® 350 Series #907 161 CC/CV model w/Dinse-style connectors. See Lit. Index No. DC/18.83

#907 224 VS model w/Tweco®-style connectors. See Lit. Index No. DC/18.83#907 366 MPa model w/Dinse-style connectors. See Lit. Index No. DC/18.83

CST™ 280 CC/DC #907 244 220-230/460–575 VAC w/Dinse-style connectors. See Lit. Index No. DC/29.55#907 244-01-1 220-230/460–575 VAC w/Tweco®-style connectors. See Lit. Index No. DC/29.55#907 251 208-230/400–460 VAC w/Dinse-style connectors. See Lit. Index No. DC/29.55#907 251-01-1 208-230/400–460 VAC w/Tweco®-style connectors. See Lit. Index No. DC/29.55

Dynasty® 200 SD #907 099 Basic controls for AC/DC TIG/Stick, 120–460 VAC. See Lit. Index No. AD/4.8Dynasty® 200 DX #907 099-01-1 Full feature controls for AC/DC TIG/Stick, 120–460 VAC. See Lit. Index No. AD/4.8

Plasma Cutting Spectrum® 375 X-TREME™ #907 339 Includes X-CASE™. See Lit. Index No. PC/9.2Spectrum® 625 X-TREME™ #907 404 Includes X-CASE™. See Lit. Index No. PC/9.6Spectrum® 875 #907 390-01-1 See Lit. Index No. PC/9.8

Remote Controls and Switches See page 6

Trailers and HitchesHWY-224 Trailer #043 805 Trailer with lights, fenders and 2 in (50 mm) ball hitch. For highway useOFR-224 Trailer #043 802 Trailer with 2 in (50 mm) ball hitch. For off-road useCable Tree #043 826 Trailer-mounted cable holder for HWY-224 or OFR-224 Dual Hitch #300 831 Combination 2 in (50 mm) ball hitch and 3 in (76 mm) lunette eye in one

reversible assembly. For HWY-224 or OFR-224

Date: Total Quoted Price:

Ordering Information