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5.2 Troubleshooting
•
Before machines are shipped from the factory, they are ne-tuned. Do not allow personnel not
authorized by the representative to make any changes to the equipment.
•
The maintenance process must be carried out by quali ed personnel. If any electrical component is
misconnected or misplaced, it can cause potential harm to the user.
•
Only authorized technical service personnel can perform technical checks on the equipment.
•
If the equipment has problems and there is no authorized service center, contact our sales agent or
authorized distributor in the area.
Quick troubleshooting guide for SKYWORKS 3550 equipment:
Check up that Whether fan is damaged and is normal to rotate or control. If the fan is
damaged, please change immediately. If the fan does not rotate after the arc welding
machine is overheated , observe that whether there is something blocked in the blade, if it is
blocked, please get rid of ; If the fan does not rotate after getting rid of the above problems,
you can poke the blade by the rotation direction of fan. If the fan rotates normally, the start
capacity should be replaced; If not, change the fan.
Observe that whether the fast connector is loose or overheated. If the arc welding machine
has the above problems, it should be fastened or changed.
Observe that Whether the current output cable is damaged. If it is damaged, it should be
wrapped up, insulated or changed.
Using the dry compressed air to clear the inside of arc welding machine. Especially for
clearing up the dusts on radiator, main voltage transformer, inductance, IGBT module, the
fast recover diode and PCB, etc.
Check up the bolt in arc welding machine, if it is loose, please screw down it. If it is skid,
please replace. If it is rusty, please erase rust on bolt to ensure it works well.
Whether the actual current accords with the displaying value. If they did not accord, they
should be regulated. The actual current value can be measured by the adjusted plier-type
ampere meter.
Measure the insulating impedance among the main circuit, PCB and case, if it below 1M ,
insulation is thought to be damaged and need to change or strengthen insulation.
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