USER MANUAL - 15 - YF-68E/A0
NOTES BEFORE CHECKING
WARNING!
Blind experiment and careless repair may lead to more problems and make formal check and
repair more difficult. When the machine is electrified, the bared parts contain life-threatening
voltage. Any direct and indirect touch will cause electric shock, and severe electric shock will lead
to death.
WARNING
！
Connected welding machine to dynamotor directly will damage machine. The heavy voltage
pulse which is produced by dynamotor will burn out machine when machine connected
to dynamotor, only can use asynchronous dynamotor whose frequency and voltage both are
steady. Because of connecting welding machine to dynamotor directly lead to damage
and malfunction, which is not in guarantee.
NOTICE: In the period of guarantee maintenance, if user makes wrong check and repair for malfunction
of welding/cutting machines without our permission, the free maintenance guarantee offered will be invalid
