Lincoln Electric DC-400 specifications Your local Authorized Field, Service Facility

Page 31

E-4

TROUBLESHOOTING

E-4

 

 

 

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

PROBLEMS

(SYMPTOMS)

POSSIBLE

CAUSE

RECOMMENDED

COURSE OF ACTION

OUTPUT control not functioning on

1. OUTPUT CONTROL switch in

 

“REMOTE” control.

 

wrong position. Place switch in

 

 

 

“REMOTE”.

 

 

2.

Faulty OUTPUT CONTROL

 

 

 

switch.

 

 

3.

Faulty remote control potentiome-

 

 

 

ter.

 

 

4.

Leads or connections open in

 

 

 

control circuit.

 

 

5.

Faulty Control PC Board.

 

 

 

 

 

Poor arc striking with semiautomat-

1.

Defective start circuit.

 

ic or automatic wire feeders.

2.

Poor work connection.

If all recommended possible areas of

 

3.

Improper procedures.

misadjustment have been checked

 

4.

Defective Control PC Board.

and the problem persists, Contact

 

 

 

your local Authorized Field

Poor arc characteristics.

1.

Start circuit energized at all times

Service Facility.

 

 

(read switch CR3 not closing).

 

 

2.

Defective Start PC Board.

 

 

3.

Defective Control PC Board.

 

 

4.

Capacitor(s) in output circuit

 

 

 

failed. A failure is indicated if the

 

 

 

small vent plug on top of a capac-

 

 

 

itor is raised or blown out.

 

 

 

 

ARC CONTROL has no effect in

1. Defective R1, L1, S4C, S4D actu-

 

CV (FCAW/GMAW) mode with

 

ator or S5.

 

short circuit transfer processes.

 

 

 

 

 

 

115VAC Receptacle not working.

1. Circuit Breaker Tripped.

 

 

2.

Defective Circuit Breaker.

 

 

3.

Broken Connection in Wiring.

 

 

 

 

 

 

 

 

 

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

DC-400

Image 31
Contents 10699 11038 11085 11128 11347 RED-D-ARC DC-400California Proposition 65 Warnings SafetyElectric Shock can kill Iii Welding Sparks can cause fire or explosionSûreté Pour Soudage a L’Arc Précautions DE SûretéOn-Line Product Registration Please Examine Carton and Equipment For Damage ImmediatelyTable of Contents Section D ViiSection E Height Width Depth Weight InstallationTechnical Specifications DC-400 Output Maximum Open Circuit Voltage Auxiliary PowerDuty Lengths Cycle Machine LoadCable 400A 100% 500A 50%Remote Control Adapter Cable K864 Multiprocess Switch K804-1 Operation Multiprocess Switch Connection and Operation PurposeConnection of DC-400 to LN-22 or LN-25 DesignOutput Connections Auxiliary Power ConnectionsRemote Control Connections Case FeaturesMachine & Circuit Protection Thermal Protection Light STICK, TIG or AIR/CARBON ARC Multiprocess SwitchElectric Shock can kill OperationARC Force Control Dial ARC Control SwitchOutput Terminals Switch Voltmeter Switch Rating PlateDegree of protection provided by the enclosure IP21Earth Ground Connection 4OPERATIONB-4Signifying the Earth Ground Connection DC-400 Recommended Processes & Equipment Duty Cycle Amps Volts Power Source OperationVoltmeter Switch Duty Cycle and Time PeriodPIN Lead no Function ARC Force Control Dial Effective only in CC modeARC Control Switch Effective only in CV FCAW/GMAW mode Front View of 14-PIN Connector ReceptacleMachine and Circuit Protection Terminal Strip ConnectionsFactory Installed Options AccessoriesField Installed Options Undercarriages K817, K817R, K841 HI-FREQUENCY KIT K799 Codes 8634 and Above onlyRoutine Maintenance 1MAINTENANCED-1HOW to USE Troubleshooting Guide TroubleshootingContact your local Authorized Field Service Facility Output Control Local Your local Authorized Field Service FacilityPower I/0 Switch Check Procedure for Replacing PC BoardsConnecting the Remote Control to the Machine Fault Protection OperationPower Silicon Controlled Rectifier Test Remote Control CheckPower Diode Test Power Rectifier Bridge Assembly Checking ProcedureWiring Diagram for Code DiagramsPasted inside Number Wiring Diagram for Code 10699 and Above11085, 11128 Power Rectifier Bridge Diagram Type M12244-7 DC-400 32.00 15.39 30.92 30.02 +.11 Dimension PrintDC-400 Precaucion Warnung
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DC-400 specifications

The Lincoln Electric DC-400 is a versatile and robust DC arc welding power source designed to meet the demands of various industrial applications. Known for its reliability and performance, the DC-400 is ideal for both professional welders and fabrication shops requiring robust equipment that can handle challenging welding tasks.

One of the main features of the DC-400 is its ability to provide a smooth, stable arc, which is essential for achieving high-quality welds. This welding machine is capable of delivering a wide amperage range, typically from 20 to 400 amperes, making it suitable for various welding processes, including MIG, TIG, and Stick welding. The unit's high output capabilities allow it to effectively weld a variety of materials, such as steel, stainless steel, and various alloys.

In terms of technology, the DC-400 integrates advanced power conversion technology that enhances energy efficiency while minimizing heat loss during operation. This not only contributes to lower operating costs but also ensures a longer service life for the machine. The DC-400 features a durable, rugged design, with a robust steel frame that can withstand the rigors of heavy industrial use while providing an IP23 rating for protection against moisture and dust.

Another notable characteristic of the DC-400 is its ease of use. The intuitive controls allow for quick adjustments to settings, enabling welders to easily adapt to different job requirements. The arc characteristics of the DC-400 can be fine-tuned to optimize performance for different welding applications, ensuring consistent results every time.

Moreover, the DC-400 is equipped with built-in safety features such as thermal overload protection, which prevents damage to the machine in case of prolonged operation under heavy loads. This feature enhances the safety of the operator and extends the life of the welding machine.

Overall, the Lincoln Electric DC-400 stands out as a reliable and efficient welding power source. Its combination of high-performance capabilities, advanced technology, and next-level usability makes it a popular choice in the industry. Whether for heavy fabrication, maintenance, or repair work, the DC-400 continues to prove itself as an indispensable tool for professional welders seeking quality and durability in their equipment.