Fubag IRMIG 140 Operator'S Manual Download Page 12

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perator's

anual

9. Maintenance

Unlike the traditional welder, the reversible welder belongs to the scientifically sophisticated product
which uses the modern electronic component parts combined with high technology. Therefore the
trained personnels are required for its maintenance. However, due to the fact that there are very few
components to be easily worn out, it doesn’t need regular service apart from usual cleaning work.
Only the qualified people are allowed to be in charge of the repair job. It is strongly recommended
that customers contact our company for the technical back-up or service when they feel unable to
work out the technical hitch or problems.

The newly installed welder or which haven’t been in use for some time need s to be surveyed the

insulation resistances between each winding and every winding to case with millimeter, which can
not be less than 2 5MΩ.

Keep from the rain, snow and long term exposing to sunlight when welder is used outdoor.

If the welder is not in use either for a long time or temperature ranges from -25 ~ +55

, and the

relative humidity can not be more than 90%.

The professional maintenance personnel should use dry compressed air (use air compressor or

bellows) to remove the dust inside the machine. The part adhering to grease must be cleaned with
cloth while make sure there are no loosing parts existed in the tightened places and connected
cable. Usually the machine should be cleaned once a year if the dust accumulation problem is not
very serious, while it needs cleaning once or even twice every quarter if the dust accumulation
problem is serious.

Regularly check the input & output cables of welder to guarantee them right and firmly connected

and avoid them being exposed. Check should be taken once every month when fixed using and
every check taken when removing.

Regularly check the seal performance of gas system, whether the fan and feeder motor having

abnormal sound and whether every joint being loose.

Keep torch cable direct when welding.

Regularly clean the splash of nozzle (cannot use the way similar to knocking the torch head) and

stick to using splash ointment. Don’t remove the feeder device by means of pulling he torch cable.

Use qualified wire, no using inferior or rusty wire.

Clean the dust of liner with compressed air after the welder using some time (the dust is

accumulated by friction between wire and liner roll if find it wear and tear to prevent wire uneven
feeding.

The pressed roll can not be pressed too firm to guarantee smooth wire feeding. (It will lead to wire

deformation, adding the feeding resistance and accelerating the friction of gear if pressed over
firmly.)

- The main loop voltage happens to be a bit higher, so safety precaution should be taken before
repair to avoid accidental shock. The untrained people are forbidden to open the case.

Power source needs to be cut off before dust removal
Never tamper with wire or damage the component parts when cleaning.

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