WARPP INMIG 250 IH, Руководство по эксплуатации

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(4) There is one grounding screw on the back of every welder with the grounding mark.
Before use, selecting one cable with the cross section of more than 4mm2, connect
the shell of welding machine to ground to discharge electrostatic or avoid possible
accidents due to current leakage.
(5) If the welding machine exceeds the standard continuous loading time, the welding
machine would enter protective state and stop working. If this situation happens, it
indicates that the welding machine exceeds sustained rate of standard load. And
excessive heat trigger the temperature detect switch, which make the welder stop
working. At the same time, the yellow dictator at the front board goes out.
In this case, do not plug off the power so that the cooling fan starts to cool the
welding machine. When the yellow indicator lit up, it indicates the temperature lower
down to the normal range and welding work can be continued.
Maintenance
Regular maintenance and inspection are done to ensure the machine to work safely
and efficiently. Check whether the power of the welding machine is off before
checking the external connectors. Check the internal wiring five minutes after the
power of the welding machine is turned off, so that the capacitors of the machine are
fully discharged to avoid electric shock accidents and ensure the safety of the staff.
Reference Guide for Maintenance
Line maintenance items
A regular maintenance
is done every one or two months
1. The function of the power switch
2. Whether the cooling fan is
rotating normally
3. Whether the abnormal vibration,
noise or smell exists
4. Whether the cable connector is
overheated
5. Whether welded cable is
abnormally hot
6. Whether the cable is damaged
7. Whether a wire connector is loose
1. Remove dirt:
Compressed air is used to remove
dirt, in particular the dirt on inductors,
transformers, power transistors and
printed circuit boards.
2. Maintenance of the circuit
connectors
Check whether the input terminal, the
output connector, the external
connections are loose or rusty.
Tighten the loose places and remove
the rust to ensure good contact.
3. Check whether the grounding line is
well.