• Direct current three phase welder. In comparison with a traditional welder, it offers the following advantages:
  — High mains power factor.
  — Reduced load on plant primary electrical service.
  — Balanced load distribution on the three phases.
  — Reduced effect of magnetic materials between arms on the welding current.
  — Reduced installation costs.
• Six-phase silicon rectifier with device for checking the correct diodes clamping force.
• Protection of the diodes against overload, overvoltages, and overtemperatures.
• Complex pneumatic cycle with low force squeeze.
• Cylinder with chrome plated stem for heavy duty works and long life; adjustable anti-rotation device.
• Adjustable double stroke with key control.
• Lubrication free pneumatic components to eliminates oil mist and to protect the environment.
• Head descent without pressure for set up and service.
• Built-in compressed air filter unit and tank.
• Compressed air disconnecting device.
• Electrodes speed control valves, shock absorber for end of stroke and air discharge silencers assuring the minimum noise.
• Two stage electric foot control for clamping and welding pieces only if correctly positioned.
• Pre-setting for additional double stage electric foot connection for the direct recalling of welding program no.2 (not on units equipped with option 6132).
• Water-cooled transformers, plates, electrode-holders and electrodes; transformers with epoxy resin coated windings.
• Flow switch which makes the welder stop if the cooling water does not circulate.
• TE553 microprocessor control unit. Phase shift welding current adjustment. Synchronous SCR contactors insulated from cooling water circuit with protection thermostat.
• Standard on all models: two-hand safety control with timer assuring the best safety, and removable key selector. The two-hand control push-buttons are standard on projection models only (thay are available on request on spot welder model).
• Emergency push-button to stop the machine immediately.
• Automatic circuit breaker for protection.
• Valve to stop the flow of the water cooling when the machine is off.

Options

• 6132 — Rotary selector for recalling the welding programs.
• 6133 — Double stroke control device with pneumatic foot instead of key one. To be used only for spot welding when the work necessarily requires it.
• 6135 — Cylinder 1200 daN (diameter 125 mm double stage) total stroke 100 mm.
• 6140 — Proportional valve.