Pentium FAN PROTONI spot welding machine made in Austria is a common equipment in the maintain of automobile body parts in the national vocational college skills competition. However

once functional fault occurs in use

the machine needs to be sent to Austria for maintenance

which brings great inconvenience to the competition. Through plenty of practical analysis and research

the basic structure and working principle of this machine are mastered

and three kinds of fault phenomenon are analyzed

which are selfinspection display NO RUN and welding spot without nugget

self-inspection RUN and welding spot without nugget

three-phase air switch trip after boot

the corresponding maintenance methods and specification operating requirements are summarized

which saves time and money.