SWEISS
WELD.COM
info@sweissweld.com
MAINTENANCE & TROUBLESHOOTING
21
examination
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.
Quarter-
yearly
examination
Whether the actual current accords with the displaying value. If they
does not accord, they should be regulated. The actual current value
can be measured by the adjusted plier-type ampere meter.
Yearly
examination
Measure the insulating impedance among the main circuit, PCB and
case, if it below 1MΩ, insulation is thought to be damaged and need to
change , and need to change or strengthen insulation.
§5.2 Troubleshooting
Before arc welding machines are dispatched from the factory, they have already been
debugged accurately. So forbid anyone who is not authorized by us to do any change to
the equipment!
Maintenance course must be operated carefully. If any wire becomes flexible or is
misplaced, it maybe potential danger to user!
Only professional maintenance personal who is authorized by us could overhaul the
machine!
Guarantee to shut off the arc welding machine’s power before turn on the outline of the
equipment!
If there is any problem and has no the authorized professional maintenance personal of
our company, please contact local agent or the branch company!
If there are some simple troubles of SKYARC 2750/2750CEL welding machine, you can
consult the following overhauling chart:
S/N
Troubles
Reasons
Solution
1
Turn on the power source, and
fan works, but the power light
is not on.
No power supply input
Test the power supply input
The fuse on the rear panel is broken
Change the fuse (3A)
The power light damaged or connection is
not good
Test and repair the inside circuit of
power light
Control PCB failures
Repair or change the control PCB
2
Turn on the power source, and
the power light is on, but fan
doesn’t work
There is something in the fan
Clear out
The start capacitor of fan damaged
Change capacitor
The fan motor damaged
Change fan
3
The number on the display is
not complete
The digital pipe in the display is broken
Change the digital pipe
