The Tianli DN-300 fixed spot welding machine user manual provides safety warnings, technical data, operation steps and maintenance instructions.
This manual describes the safe installation, operation, and maintenance of the Tianli DN-300 fixed spot welding machine. It includes precautions, technical specifications, structural features, and the working principle of the equipment.
The document also provides detailed wiring, gas‑line and water‑line diagrams, as well as step‑by‑step procedures for starting, welding, and shutting down the machine, plus routine checks and adjustments. This manual is written in Chinese.
| Rated primary voltage | 380 V AC, 50 Hz |
|---|---|
| Rated primary current | 658 A |
| Secondary no‑load voltage | 13.6 V |
| Transformer turns ratio | 14:1 |
| Maximum short‑circuit current | 48 kA |
| Insulation class | F |
| Maximum welding thickness (low‑carbon steel) | 6 mm + 6 mm |
| Electrode arm stroke length | 420–480 mm |
The machine requires a single‑phase 380 V AC power supply at 50 Hz.
A cooling water flow of at least 40 L/min is required.
The water and gas lines should be checked regularly to prevent blockage and ensure proper pressure.
The maximum electrode pressure is 1500 kg ± 8 %.