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18 -
No.
Problem
Root cause
What to do
3
The ''machine-on''
light is lit. Digital
display meter
functional and fan
operational. Error
indicator light is
off. No
high-frequency
discharge sound
when torch trigger
is activated. No
no-load output.
Insufficient torch-trigger
contact and the torch-trigger
connecting wire is loose.
Re-connect the torch
trigger and fasten the
torch-trigger connecting
wire.
Control wire on the cutting
torch broken or torch trigger
damaged.
Replace torch trigger.
Problems with control circuit. Check control circuit.
4
Fan, digital display
meter and
solenoid valve
operational. No
pilot arc output.
Error indicator
light off. No
high-frequency
discharge sound.
Poor contact between the
primary wire of the arc ignition
coil and the arc ignition plate.
Fasten the connecting
wire.
Oxidized spark gap.
Remove oxide film on
spark gap surface.
Damaged high-frequency arc
ignition device.
Determine which parts are
damaged and replace.
Poor
contact
of
high
temperature wire terminal of
main transformer.
Tighten the terminal
blocks.
5
Fan, digital display
meter and
solenoid valve
operational. No
pilot arc output.
High-frequency
discharge sound.
Poor interface contact of pilot
arc wire on torch.
Fasten the connection of
pilot arc wire
Poor
connection
of
the
connecting wire inside the
machine.
Check and re-tighten the
connecting wire inside the
machine
High-frequency
board
or
control board damaged.
Replace high frequency
board or control board