２９
№
Trouble
Causes
What to do
1
Indicator lamp does not
light up and machine does
not work when switched
on.
1)Phase missing
2)Fuse broken
（
2A
）
3)Power cable broken
1)Inspect power source
2)Inspect cooling fan,
transformer for ZKB/QDB,
and main control board
3)Inspect cable
2
Overheat indicator lamp
lights up
1)Too high temperature
inside machine
2)Thermal
switch
is
damaged
1)Stop working till machine
cools down
2)Change the thermal switch
3
No gas flows out while in
gas test.
1)Electromagnet valve is
damaged
2) Gas way is blocked
3)“Gas test / Cutting”
switch is damaged
4)The output air pressure
of air compressed filter
is too high.
1)Replace
2)Inspect gas way
3) Replace
4)Regulate pressure knob on the
filter to reduce air pressure
and release water valve.
After air pressure get down,
tighten up the valve.
4
The cutting torch’s button
does not work.
1)Button is damaged
2)Wire is broken
3)Control
board
is
damaged
1)Replace
2)Connect the broken wire
3) Replace
5
Too wide cut
1)Slow cutting speed
2)Nozzle is burn out
1)Increase cutting speed
2)Replace
6
Non-vertical cut
1)Nozzle is burn out
2)Non-alignment
of
nozzle to electrode.
3)Tilt cutting torch
1)Replace
2)Align the nozzle and the
electrode
3)Adjust the cutting angle.
Table 4: Trouble Shooting Table
