Lincoln Electric IDEALARC SP-250 Manuel d'utilisation
Idealarc sp-250, Service manual, Svm 111-a
Advertising
Table des MATIÈRES
Document Outline
- Master TOC
- Safety
- Section A Installation
- Section B Operation
- Section C Accessories
- Section D Maintenance
- Section E Theory of Operation
- Section F Troubleshooting & Repair
- Symptoms
- Major Physical or Electrical Damage is Evident
- Machine is dead - No Open Circuit Voltage output and No Wire Feed when gun trigger is pulled. No Display.
- No Open Circuit Voltage output but wire feeds normally when gun trigger is pulled. Display lights properly.
- No Open Circuit Voltage output and no wire feed when gun trigger is pulled. Display is functioning properly.
- Wire feeds but welding output is low causing wire to "stub". Welds are "cold". Machine cannot obtain full rated output of 250 amp
- The output voltage and wire feed is present continuously or pulsing when gun trigger is NOT activated.
- Output settings (voltage and/or wire feed speed) are being changed even though gun thumb switch or keypad
- No wire feed or open circuit voltage when gun trigger is pulled. The display lights up but the audio alarm and the display do not
- The audio alarm does NOT sound when a key is pressed, but display changes.
- The audio alarm does not sound when a key is pressed, and the display does NOT change.
- There is no gas flow when gun trigger is pulled. Wire feeds and weld voltage is present. The display functions properly.
- No readable message on the display. Backlight is lit indicating there is power to the machine.
- The display backlight does not function.
- The machine stops feeding wire while welding and the MOTOR OVERLOAD message appears on the display.
- No control of wire feed speed. Other machine functions are normal.
- There is no wire feed when gun trigger is pulled. Normal open circuit voltage is present.
- The arc is unstable and or "hunting".
- Weld bead is narrow or ropey. May have porosity with electrode stubbing into plate.
- The contact tip seizes in the gas diffuser.
- Section G Electrical Diagrams