Miller STR 400 CE Owner'S Manual Download Page 7

OM-271 435 Page 3

1-3.

Additional Symbols For Installation, Operation, And Maintenance

FIRE OR EXPLOSION hazard.

Do not install or place unit on, over, or near
combustible surfaces.

Do not install unit near flammables.

Do not overload building wiring − be sure power supply system is
properly sized, rated, and protected to handle this unit.

FALLING EQUIPMENT can injure.

Use lifting eye to lift unit only, NOT running
gear, gas cylinders, or any other accessories.

Use equipment of adequate capacity to lift and
support unit.

If using lift forks to move unit, be sure forks are long enough to
extend beyond opposite side of unit.

Keep equipment (cables and cords) away from moving vehicles
when working from an aerial location.

Follow the guidelines in the Applications Manual for the Revised
NIOSH Lifting Equation (Publication No. 94−110) when manu-
ally lifting heavy parts or equipment.

OVERUSE can cause OVERHEATING

Allow cooling period; follow rated duty cycle.

Reduce current or reduce duty cycle before
starting to weld again.

Do not block or filter airflow to unit.

FLYING SPARKS can injure.

Wear a face shield to protect eyes and face.

Shape tungsten electrode only on grinder with
proper guards in a safe location wearing proper
face, hand, and body protection.

Sparks can cause fires — keep flammables away.

STATIC (ESD) can damage PC  boards.

Put on grounded wrist strap BEFORE handling
boards or parts.

Use proper static-proof bags and boxes to
store, move, or ship PC boards.

MOVING PARTS can injure.

Keep away from moving parts.

Keep away from pinch points such as drive
rolls.

WELDING WIRE can injure.

Do not press gun trigger until instructed to do
so.

Do not point gun toward any part of the body,
other people, or any metal when threading
welding wire.

BATTERY EXPLOSION can injure.

Do not use welder to charge batteries or jump
start vehicles unless it has a battery charging
feature designed for this purpose.

MOVING 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 maintenance and troubleshooting as necessary.

Reinstall doors, panels, covers, or guards when maintenance is
finished and before reconnecting input power.

READ INSTRUCTIONS.

Read and follow all labels and the Owner’s
Manual carefully before installing, operating, or
servicing unit. Read the safety information at
the beginning of the manual and in each
section.

Use only genuine replacement parts from the manufacturer.

Perform maintenance and service according to the Owner’s
Manuals, industry standards, and national, state, and local
codes.

H.F. RADIATION can cause interference.

High-frequency (H.F.) can interfere with radio
navigation, safety services, computers, and
communications equipment.

Have only qualified persons familiar with
electronic equipment perform this installation.

The user is responsible for having a qualified electrician prompt-
ly correct any interference problem resulting from the installa-
tion.

If notified by the FCC about interference, stop using the
equipment at once.

Have the installation regularly checked and maintained.

Keep high-frequency source doors and panels tightly shut, keep
spark gaps at correct setting, and use grounding and shielding to
minimize the possibility of interference.

ARC WELDING can cause interference.

Electromagnetic energy can interfere with
sensitive electronic equipment such as
computers and computer-driven equipment
such as robots.

Be sure all equipment in the welding area is
electromagnetically compatible.

To reduce possible interference, keep weld cables as short as
possible, close together, and down low, such as on the floor.

Locate welding operation 100 meters from any sensitive elec-
tronic equipment.

Be sure this welding machine is installed and grounded
according to this manual.

If interference still occurs, the user must take extra measures
such as moving the welding machine, using shielded cables,
using line filters, or shielding the work area.

Summary of Contents for STR 400 CE

Page 1: ...Processes STR 400 OM 271 435A 2015 02 Description Arc Welding Power Source Stick SMAW Welding www MillerWelds com TIG GTAW Welding CE...

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: ...Duty Cycle and Overheating 9 3 5 Volt Ampere Curves 10 SECTION 4 INSTALLATION 10 4 1 Selecting A Location 10 4 2 Tipping 11 4 3 Weld Output Terminals and Selecting Cable Sizes 12 4 4 Weld Output Termi...

Page 4: ...use of certain hazardous substances in electrical and electronic equipment Standards IEC 60974 1 Arc Welding Equipment Welding Power Sources edition 3 2005 07 IEC 60974 10 Arc Welding Equipment Elect...

Page 5: ...uch 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 the following equipment in order presented 1 a...

Page 6: ...perly 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 gasoline Connect work cable to the work...

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: ...NFPA Standard 51B from National Fire Protection Association Quincy MA 02269 phone 1 800 344 3555 website www nfpa org OSHA Occupational Safety and Health Standards for General Indus try Title 29 Code...

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: ...Welding SMAW Input Remote Constant 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 Sc...

Page 12: ...general public access is prohibited or regulated in such a way as to be similar to occupational use by an expert or an instructed person Wire feeders and ancillary equipment such as torches liquid coo...

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: ...40 45 50 55 60 65 70 80 85 90 95 100 75 SECTION 4 INSTALLATION 4 1 Selecting A Location Special installation may be required where gasoline or volatile liquids are present see NEC Article 511 or CEC...

Page 15: ...OM 271 435 Page 11 4 2 Tipping Do not move or operate unit where it could tip 956142993_5 A Notes...

Page 16: ...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 2x70 2 ea 2 0 300 50 1 60 1 0 70 2 0 95 3 0 120 4 0 2x70 2 ea 2 0 2x95 2 ea 3 0 2x95 2 ea 3 0 350 60 1 0 70...

Page 17: ...command signal from re mote control The remaining sockets are not used 4 6 Typical Connections For DCEP Stick SMAW Welding 956142993_1 A 1 Negative Weld Terminal 2 Positive Weld Terminal 3 Remote 14...

Page 18: ...1 Remote Hand Control 2 Remote Foot Control 3 Negative Weld Terminal 4 Positive Weld Terminal 5 Remote 14 Receptacle For Direct Current Electrode Negative DCEN connect electrode holder cable to Negat...

Page 19: ...Max Recommended Input Conductor Length In Meters Feet 55 179 Min Grounding Conductor Size In mm2 AWG 4 6 10 Power cord supplied with the unit is sized for 230V operation Larger power cord may be requi...

Page 20: ...OM 271 435 Page 16 4 9 Connecting 3 Phase Input Power input2 2012 05 956142993_1 A GND PE Earth Ground L1 2 1 L2 L3 3 3 4 5 6 7 Tools Needed...

Page 21: ...sconnect 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 C...

Page 22: ...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 8 High...

Page 23: ...lectrode sticks to workpiece use a quick twist to free it 1 2 3 5 3 Scratch Start TIG Ref WM Marketing This starting method is not ac ceptable 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 6 3 Troubleshooting Trouble Remedy No weld output...

Page 25: ...Use dry properly stored electrodes Low weld output with no control Check position of Amperage Control see Section 5 1 Limited output and low open circuit voltage Check incoming power for correct volta...

Page 26: ...OM 271 435 Page 22 SECTION 7 ELECTRICAL DIAGRAMS Figure 7 1 Circuit Diagram For STR 400...

Page 27: ...OM 271 435 Page 23 956142994 A...

Page 28: ...Retaining Wheel 2 8 156009127 Washer Round hooking For Handle 2 9 056020071 Knob for hose 25 mm dia 2 10 156002047 Handle 2 11 156018114 Nut Locking 2 12 156009128 Washer flat 10x30 6 13 156012132 Ha...

Page 29: ...9037 Clamp Cable D 16 23 1 2 PC2 058075017 PCB Filter 1 3 156005130 Support Voltage Change Board 1 4 L1 057098019 Choke 60x70x180 Al 1 5 T1 058021160 Transformer 380 400V 60x80 Al 1 6 TP1 056159026 Th...

Page 30: ...able D30 1 29 S1 056067210 Switch 32 A 1 To maintain the factory original performance of your equipment use only Manufacturer s Suggested Replacement Parts Model and serial number required when orderi...

Page 31: ...ntrollers Powered Air Purifying Respirator PAPR Blower Unit No Labor Racks Running Gear and Trailers Subarc Wire Drive Assemblies Water Coolant Systems Work Stations Weld Tables No Labor 5 6 Months Pa...

Page 32: ...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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