Do you have a question about the Thermal Arc 400S and is the answer not in the manual?
Details risks associated with arc welding including electric shock, fumes, and flying sparks.
Lists key industry safety standards and relevant references for safe welding practices.
Guide on effective manual usage, including understanding annotations and warnings.
Information on locating unit identification numbers, model, and serial numbers.
Explains various symbols used throughout the operating manual for clarity.
Critical steps and requirements for safely connecting electrical input power.
Detailed technical parameters and ratings of the ARCMASTER 400 S welder.
Identification and description of the front panel controls and features.
Explanation of the function and purpose of various welding parameters.
Step-by-step procedure for performing stick welding operations.
Step-by-step procedure for performing DC lift TIG welding operations.
Recommended electrode polarity for TIG welding processes.
Guidance on current settings based on tungsten electrode diameter.
Recommended electrode polarity for stick welding processes.
Information on how different base metals affect stick welding.
Common issues encountered during TIG welding and their solutions.
Troubleshooting steps for power source malfunctions and error codes.
Technical specifications and requirements for the Voltage Reduction Device (VRD).
Instructions on how to enable and disable the Voltage Reduction Device (VRD).
| Input Frequency | 50/60 Hz |
|---|---|
| Output Current Range | 5-400 A |
| Duty Cycle | 60% |
| Efficiency | 85% |
| Rated Output | 400 A at 36 VDC |
| Welding Processes | Stick, TIG, MIG |
| Open Circuit Voltage | 70 V |
| Input Voltage | 208/230/460V |
| Input Phase | Single Phase / Three Phase |











