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5.2. Troubleshooting
- Before the welding machines are dispatched from the factory, they have already been tested and
calibrated accurately. It is forbidden for anyone who is not authorized by our company to do any
change to the equipment!
- Maintenance course must be operated carefully. If any wire becomes exible or is misplaced, it
maybe potential danger to user!
- Only professional maintenance sta that isauthorized by our company could overhaul the machine!
- Be sure to shut o the Main Input Power before doing any repair work on the welding machine!
- If there is any problem and there is no authorized professional maintenance personal on site, please
contact local agent or the distributor!
If there are some simple troubles with the welding machine, you can consult the following Chart:
Troubles
Turn on the power source, and fan
works, but the power pilot lamp is
not on.
Turn on the power source, and
the power lamp is on, but fan
doesn't work
Turn on the power source, the
power lamp is not on, and fan
doesn't work
The number on the display is not
intact.
The max and min value displayed
doesn't accord with the set value.
No no-load voltage output (MMA)
Reasons
The power light damaged or
connection is not good
The transformer of power is
broken
Control PCB failures
There is something in the fan
The start capacitor of fan
damaged
The fan motor damaged
No power supply input
The fuse inside the machine
damaged
The LED in the display is
broken
The max value is not accordant
The min value is not accordant
The machine is damaged
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SWEISSWELD.COM
Solutions
Check and repair Pr7
Repair or change the
transformer
Repair or change the
control Pr4
Clear out
Change capacitor
Change fan
Check whether there
is power supply
Change it (10A)
Change the LED
Adjust potentiometer
Imin on the power
board.
Adjust potentiometer
Imaxin the current
meter.
Check the main circuit
and the Pr4.
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