Lincoln Electric R3R 375-I ARC Force Control Dial, Output Current Control Dial, Rating Plate

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B-2

OPERATION

B-2

 

 

 

B. ARC FORCE CONTROL DIAL

Arc Force

Increase/Decrease of

Arc Force

C. OUTPUT CURRENT CONTROL DIAL

Output Current

D. OUTPUT CURRENT CONTROL RANGE SWITCH (R3R 500-I and R3R 600-I only)

Output Current

Control Dial Range A

Output Current

Control Dial Range B

E.OUTPUT CURRENT CONTROL “MACHINE- REMOTE” SWITCH

Remote Output

Current Control

F.POLARITY SWITCH (Factory installed option on domestic models only)

Electrode Polarity

Positive

Electrode Polarity

Negative

Do Not Switch While

Welding

G. RATING PLATE

Three Phase

Power

Transformer

Rectifier

Rectified DC

Output

Constant Current

Characteristics

Shielded Metal Arc

Welding

Line Connection

H. HIGH TEMPERATURE WARNING LIGHT

High Temperature

Limit

I. WARNING

Warning

Identification

J. GROUND

Signifying the Earth (Ground) Connection

IDEALARC® R3R 375-I, 500-I AND 600-I

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Contents R3R 375-I, 500-I Safety California Proposition 65 WarningsElectric Shock can kill Welding and Cutting Sparks can Cause fire or explosion Précautions DE Sûreté Sûreté Pour Soudage a L’ArcThank You Table of Contents Input Power Connection InstallationInstallation Duty CycleOperation ARC Force Control Dial Output Current Control MACHINE- Remote SwitchHigh Temperature Warning Light Output Current Control DialK857 Remote Current Control AccessoriesOptional Equipment K817, K817R UndercarriagePower Rectifier Replacement MaintenanceRoutine Maintenance Pocket AmptrolTroubleshooting HOW to USE Troubleshooting GuideRecommended Function Problems Troubleshooting Troubleshooting Problems Possible Cause Recommended R3R 375Troubleshooting Procedures Checking Snubber CircuitChecking Current Control Rheostat on Machine Power Silicon Controlled REC- Tifier Test Diagram Power Diode TestWiring Diagrams Idealarc R3R-400, 500-I, 500 & 600-I Wiring DiagramWiring Diagrams R3R 375-I, 500-I K817 or K817R Precaucion Aviso DE