Operation Manual
InvertaPuls IP4-3
Page 27
Mechanical defects are mostly the result of irregular wire feeding or its blocking.
Electrical defects cause partial or full device failure. Only an authorized electrician can
repair the electrical part of welding device.
The trobleshooting should be executed in the OFF mode first and in the following sequence:
- Check up the solidity of electrical connections on switches, current transformer,
suppressor and also the solidity of plugged and soldered connections.
- Check up the conductivity and fuse contacts.
- Check up visually possible short circuits or winding overload (coloration).
Possible malfunction
Troubleshooting
Possible reason
Electric arc is irregular or unstable
1. wrong welding voltage setup
adjust the voltage
2. too much/little wire
adjust the wire feed regulator
3. The workpiece clamp is loose
or transfer resistance is too high (rust,
paint)
make a good contact between workpiece
and clamp
4. The contact nozzle is worn up or
the diameter is wrong
change it
5. The gas flow is not correct
adjust the gas flow
6. The workpiece is not clear in the
welding area
remove paint, rust, fat etc.
7. Performance grade malfunction
take the device to service
8. Plug-in spiral is dirty
clean it up or change it
9. Feeding malfunction
see below
Too much metal drops during welding
1. too much wire
adjust the wire feed regulator
2. welding voltage is too high
set up lower voltage
3. workpiece is dirty
clean it up
Feeding engine is not rotating
1. Power malfunction
check up the connection to the socket
2. Button on the torch was not pressed
press the button
3. Burner switch not actuated
Press the button, good contact between
workpiece and make workpiece clamp
4. Fuse
change it (must be changed by authorized
electrician)
5. Engine malfunction
take the device to service
