MAINTENANCE AND TROUBLESHOOTING
4.3 BASIC TROUBLESHOOTING
Fault Symptoms
Rectification
1. The cutting equipment
is operated, LED1 lamp is
off, no output, the built-in
fan unavailable.
1.Possible function failure of power switch. Compensate it if necessary.
2.Possible unavailability of input. Compensate it if necessary.
3.Possible short circuit of input cable, Compensate it if necessary.
2. While this equipment is
operated, LED1 is on, no
output, the built-in fan
unavailable.
1. Possible unavailability of the connection of switch. Reconnect it.
2. PCB is possibly damaged. Replace it if necessary.
3. While this equipment is
operated, the built-in fan
functions, LED2 is off, no
HF electricity releasing,
arc starting unavailable.
1.PCB is possibly damaged. Replace it if necessary.
2.Possible electricity leakage of capacitors, replace them if necessary.
3.Check the connection whether is available. If fault cannot be rectified, please
contact the supplier for further advice.
4. Possible damage of the cutting torch. Replace it if necessary.
4.LED2 is off, and cutting
current output is
unavailable.
1.Possible disconnection of cutting torch cable.
2.Possible disconnection of earth cable, or unavailability of connection of the earth
cable and work piece.
3.The connection between positive output terminal or the air or electricity output
terminal and this cutting equipment is possibly unavailable. Reconnect them.
5. While is this cutting
equipment is operated,
LED2 is off, no electricity
releasing, and the arc
starting available.
1.The cable connection between the transformer of arc starting and power PCB is
possibly unavailable. Check and reconnect it.
2.Possible oxidization of the spark gap parts occurs. Or the distance is larger than
the maximum distance available. Remove the oxidization of these parts and adjust
the distance of the spark gap parts to 1mm.
3.Possible damage to switch. Replace them if necessary.
4. HF arc starting circuit are possibly damaged. Check and replace them if
necessary.
6. While this cutting
equipment is operated,
LED2 is on, and there is
no output.
1.It is possible of over-current protection status. Wait till the LED2 is off, and restart
this cutting equipment.
2. Possible fault with Inverter circuit. Disconnect the plug of PCB. And restart this
cutting equipment.
3. PCB is possibly defective. Replace it.
4. Possible damage of transformer of center PCB. Replace it if necessary.
5. If the indicator is off ,possible damage of secondary rectifier of transformer.
Replace it if necessary.
6. Possible damage of feed back circuit. Replace it if necessary.
7. Unstable current
is
unavailable.
1.Possible damage of the current controller. Replace it if necessary.
2.The connection of this cutting equipment is not available.
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