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milan_warr 2013−01

Effective January 1, 2013

(Equipment with a serial number preface of MD or newer)

This limited warranty supersedes all previous Miller warranties and is exclusive with no other

guarantees or warranties expressed or implied.

LIMITED WARRANTY − Subject to the terms and conditions
below, ITW Welding Products Italy warrants to its original retail
purchaser that new Miller equipment sold after the effective date
of this limited warranty is free of defects in material and
workmanship at the time it is shipped by Miller. THIS
WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE
WARRANTIES OF MERCHANTABILITY AND FITNESS.

Within the warranty periods listed below, Miller will repair or
replace any warranted parts or components that fail due to such
defects in material or workmanship. Miller must be notified in
writing within thirty (30) days of such defect or failure, at which
time Miller will provide instructions on the warranty claim
procedures to be followed.

Miller shall honor warranty claims on warranted equipment listed
below in the event of such a failure within the warranty time
periods. All warranty time periods start on the date the
equipment was delivered to the original retail purchaser or one
year after the equipment is shipped to a European distributor or
eighteen months after the equipment is shipped to an
International distributor.

1.

5 Years Parts — 3 Years Labor

*

Original main power rectifiers only to include SCRs,
diodes, and discrete rectifier modules with
exclusion of STR, Si, STi, STH and MPi series.

2.

3 Years — Parts and Labor

*

Engine Driven Welding Generators
(NOTE: Engines are warranted separately by the
engine manufacturer.)

*

Inverter Power Sources (Unless Otherwise Stated)

*

Process Controllers

*

Semi-Automatic and Automatic Wire Feeders

*

Transformer/Rectifier Power Sources

*

Water Coolant System (Integrated)

3.

2 Years — Parts

*

Auto-Darkening Helmet Lenses (No Labor)

*

Migmatic 175

*

HF Units

*

Water Coolant Systems (EU Models,
Non-Integrated)

4.

1 Year — Parts and Labor Unless Specified

*

Automatic Motion Devices

*

Field Options
(NOTE: Field options are covered under True Blue

®

for the remaining warranty period of the product they
are installed in, or for a minimum of one year —
whichever is greater.)

*

Induction Heating Power Sources, Coolers, and
Electronic Controls/Recorders

*

Motor Driven Guns (w/exception of Spoolmate
Spoolguns)

*

Positioners and Controllers

*

Powered Air Purifying Respirator (PAPR) Blower
Unit (No Labor)

*

Racks

*

Running Gear and Trailers

*

Subarc Wire Drive Assemblies

*

Water Coolant Systems (USA Models,
Non-Integrated)

*

Work Stations/Weld Tables (No Labor)

5.

6 Months — Parts

*

Batteries

6.

90 Days — Parts

*

Accessory (Kits)

*

Canvas Covers

*

Induction Heating Coils and Blankets

*

MIG Guns

*

Remote Controls

*

Replacement Parts (No Labor)

*

Spoolmate Spoolguns

*

Cables and Non-Electronic Controls

Miller’s True Blue

®

 Limited Warranty shall not apply to:

1.

Consumable components; such as contact tips,
cutting nozzles, contactors, brushes, switches, slip
rings, relays or parts that fail due to normal wear.

2.

Items furnished by Miller, but manufactured by others, such
as engines or trade accessories. These items are covered
by the manufacturer’s warranty, if any.

3.

Equipment that has been modified by any party other than
Miller, or equipment that has been improperly installed,
improperly operated or misused based upon industry
standards, or equipment which has not had reasonable and
necessary maintenance, or equipment which has been
used for operation outside of the specifications for the
equipment.

MILLER PRODUCTS ARE INTENDED FOR PURCHASE AND
USE BY COMMERCIAL/INDUSTRIAL USERS AND PERSONS
TRAINED AND EXPERIENCED IN THE USE AND
MAINTENANCE OF WELDING EQUIPMENT.

In the event of a warranty claim covered by this warranty, the
exclusive remedies shall be, at Miller’s option: (1) repair; or (2)
replacement; or, where authorized in writing by Miller in
appropriate cases, (3) the reasonable cost of repair or
replacement at an authorized Miller service station; or (4)
payment of or credit for the purchase price (less reasonable
depreciation based upon actual use) upon return of the goods at
customer’s risk and expense. Miller’s option of repair or
replacement will be F.O.B., Factory at ITW Welding Products
Group Europe or F.O.B. at a Miller authorized service facility as
determined by Miller. Therefore no compensation or
reimbursement for transportation costs of any kind will be
allowed.

TO THE EXTENT PERMITTED BY LAW, THE REMEDIES
PROVIDED HEREIN ARE THE SOLE AND EXCLUSIVE
REMEDIES. IN NO EVENT SHALL MILLER BE LIABLE FOR
DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES (INCLUDING LOSS OF
PROFIT), WHETHER BASED ON CONTRACT, TORT OR ANY
OTHER LEGAL THEORY.

ANY EXPRESS WARRANTY NOT PROVIDED HEREIN AND
ANY IMPLIED WARRANTY, GUARANTY OR
REPRESENTATION AS TO PERFORMANCE, AND ANY
REMEDY FOR BREACH OF CONTRACT TORT OR ANY
OTHER LEGAL THEORY WHICH, BUT FOR THIS
PROVISION, MIGHT ARISE BY IMPLICATION, OPERATION
OF LAW, CUSTOM OF TRADE OR COURSE OF DEALING,
INCLUDING ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR PARTICULAR
PURPOSE, WITH RESPECT TO ANY AND ALL EQUIPMENT
FURNISHED BY MILLER IS EXCLUDED AND DISCLAIMED
BY MILLER.

Summary of Contents for STR 400

Page 1: ...Processes STR 400 STR 500 OM 264 278A 2013 07 Description Arc Welding Power Source Stick SMAW Welding www MillerWelds com TIG GTAW Welding...

Page 2: ...ucts Please take time to read the Safety precautions They will help you protect yourself against potential hazards on the worksite We ve made installation and operation quick and easy With Miller you...

Page 3: ...s 8 3 4 Duty Cycle and Overheating 9 3 5 Volt Ampere Curves 10 3 6 Selecting A Location 11 3 7 Tipping 11 3 8 Weld Output Terminals and Selecting Cable Sizes 12 3 9 Remote Receptacle Information 13 3...

Page 4: ......

Page 5: ...ings or scaffolds when in cramped positions such as sitting kneeling or lying or when there is a high risk of unavoid able or accidental contact with the workpiece or ground For these conditions use t...

Page 6: ...tanks drums or pipes unless they are properly prepared according to AWS F4 1 and AWS A6 0 see Safety Standards Do not weld where the atmosphere may contain flammable dust gas or liquid vapors such as...

Page 7: ...PARTS can injure Keep away from moving parts such as fans Keep all doors panels covers and guards closed and securely in place Have only qualified persons remove doors panels covers or guards for mai...

Page 8: ...ntion During Welding Cutting and Other Hot Work NFPA Standard 51B from National Fire Protection Association Quincy MA 02269 phone 1 800 344 3555 website www nfpa org OSHA Occupational Safety and Healt...

Page 9: ...by insulating yourself from work and ground Safe3 2012 05 Disconnect input plug or power before working on machine Safe5 2012 05 Keep your head out of the fumes Safe6 2012 05 Use forced ventilation or...

Page 10: ...r local distributor for further information Safe37 2012 05 3 1 Safe49 2012 05 Move jumper links as shown on inside label to match input voltage at job site Include extra length in grounding conductor...

Page 11: ...nstant Current CC X Duty Cycle I1 Rated Supply Current I2 Rated Welding Current U0 Rated No Load Voltage Average U1 Rated Supply Voltage U2 Load voltage Line Connection Scratch Start TIG Adjust X Duty...

Page 12: ...Output 50 60 Hz Three Phase KVA KW Weight Dimensions mm L x W x H 230 V 400 V STR 400 400 A 36 Volts DC 35 Duty Cycle 20 400 A 82 V 57 5 A 33 A 22 8 19 8 Net 132 kg Ship 149 kg 1120 x 620 x 730 STR 50...

Page 13: ...s for unit to cool Reduce amperage or duty cycle before welding NOTICE Exceeding duty cycle can damage unit and void warranty 3 5 Minutes Welding 6 5 Minutes Resting Overheating 0 15 A or V OR Reduce...

Page 14: ...oltage and amperage output capa bilities of the unit 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 DC Amperes DC Volts STR 400 0 20 40 60 80 100 120140 160 180 200 220 240 260 280 300 320 340...

Page 15: ...ction 20 1 Lifting Eye 2 Lifting Forks Use lifting eye or lifting forks to move unit If using lifting forks extend forks beyond opposite side of unit 3 Line Disconnect Device Locate unit near correct...

Page 16: ...0 4 30 3 35 2 50 1 60 1 0 60 1 0 150 30 3 30 3 35 2 50 1 60 1 0 70 2 0 95 3 0 95 3 0 200 30 3 35 2 50 1 60 1 0 70 2 0 95 3 0 120 4 0 120 4 0 250 35 2 50 1 60 1 0 70 2 0 95 3 0 120 4 0 2x70 2 ea 2 0 2x...

Page 17: ...NTROL A Contact closure to B completes 24 volts AC con tactor control circuit B Contact closure to A completes 24 volts AC con tactor control circuit C Output to remote control 10 volts DC D Remote co...

Page 18: ...nected to the remote receptacle see Section 3 9 1 Remote Hand Control 2 Remote Foot Control 1 2 Ref 9561172120_1 A 3 12 Positioning Jumper Links Disconnect and lockout tag out input power before insta...

Page 19: ...e cord or cable is used minimum conductor size may increase See NEC Table 400 5 A for flexible cord and cable requirements Failure to follow these fuse and circuit breaker recommendations could create...

Page 20: ...OM 264 278 Page 16 3 14 Connecting 3 Phase Input Power input2 2012 05 956172120_1 A GND PE Earth Ground L1 2 1 L2 L3 3 3 4 5 6 7 Tools Needed...

Page 21: ...connect Device switch shown in the OFF position 3 Green Or Green Yellow Grounding Conductor 4 Disconnect Device Grounding Terminal 5 Input Conductors L1 L2 And L3 6 Disconnect Device Line Terminals Co...

Page 22: ...lection Switch Remote output is always On in TIG mode Hot Start function for Stick welding is disabled in TIG mode 5 TIG GTAW Welding Indicator Light 6 Power On Pilot Light 7 Welding Current Indicator...

Page 23: ...lectrode sticks to workpiece use a quick twist to free it 1 2 3 4 3 Scratch Start TIG Ref WM Marketing This starting method is not accept able for critical applications since small tungsten particles...

Page 24: ...e If any of these displays are shown check input power con nections If trouble continues contact a Factory Authorized Service Agent 1 2 3 AL1 AL2 AL3 5 3 Troubleshooting Trouble Remedy No weld output...

Page 25: ...se dry properly stored electrodes Low weld output with no control Check position of Amperage Control see Section 4 1 Limited output and low open circuit voltage Check incoming power for correct voltag...

Page 26: ...A complete Parts List is available at www MillerWelds com OM 264 278 Page 22 SECTION 6 ELECTRICAL DIAGRAMS Figure 6 1 Circuit Diagram For STR 400...

Page 27: ...A complete Parts List is available at www MillerWelds com OM 264 278 Page 23 956172121 A...

Page 28: ...A complete Parts List is available at www MillerWelds com OM 264 278 Page 24 Figure 6 2 Circuit Diagram For STR 500...

Page 29: ...A complete Parts List is available at www MillerWelds com OM 264 278 Page 25 956172123 A...

Page 30: ...up Retaining Wheel 2 2 8 156009127 Washer Round hooking For Handle 2 2 9 056020071 Knob for hose 25 mm dia 2 2 10 156002047 Handle 2 2 11 156018114 Nut Locking 2 2 12 156009128 Washer flat 10x30 6 6 1...

Page 31: ...70017 Link Primary Terminal 6 9 3 756069030 Board Primary Voltage Terminal 1 1 4 156005130 Support Voltage Change Board 1 1 5 L1 057098017 Choke 80x62x240 Al 1 5 L1 057098019 Choke 80x70x180 Al 1 6 T1...

Page 32: ...8 CB2 056067264 Breaker Circuit 10 A 1 1 29 656089026 Clamp Cable D30 1 1 30 S1 056067210 Switch 32 A 1 1 To maintain the factory original performance of your equipment use only Manufacturer s Suggest...

Page 33: ...Notes Work like a Pro Pros weld and cut safely Read the safety rules at the beginning of this manual...

Page 34: ...Notes Work like a Pro Pros weld and cut safely Read the safety rules at the beginning of this manual...

Page 35: ...ing Gear and Trailers Subarc Wire Drive Assemblies Water Coolant Systems USA Models Non Integrated Work Stations Weld Tables No Labor 5 6 Months Parts Batteries 6 90 Days Parts Accessory Kits Canvas C...

Page 36: ...y Zip Postal Code Please complete and retain with your personal records Owner s Record Always provide Model Name and Serial Style Number Contact a DISTRIBUTOR or SERVICE AGENCY near you Welding Suppli...

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