TROUBLE SHOOTTING
5. Power indicator
lighting up, 0.0
indica¬tor not lighting,
Fan works, The gas blow
out of torch after
pressure torch trigger
( gas valve works )No
HF, There is arc between
metal and electrode
1Arc striking coil loosen;
2 HF capacitor 102-10KV
broken
1.Check if any wires
loosen
2.Replace the HF
capacitor.
6. Power indicator
lighting up, Fan works,
Gas blow out of torch
while pressing trigger,
0.0 lighting while
pressing torch trigger
1.Diode problem :
2.IGBT problem ;
a1.Check every diode,
replace it if any
damaged 2.Check every
IGBT to see If any one
damaged
, Regisistor. Diode,
Replace it if any one
damaged
7. Power indicator
lighting , Fan works, Air
can blow out of torch
head after press torch
trigger, 0.0 indicator not
lighting, But it is lighting
up while cutting.
1.Circuit problem ;
Check IC3140 and other
compoents
1.Check the coil 5:5, fix it
if any wires loosen.
2.Does the feedback
wire loosen or broken ,
Check and replace.
3.Replace the board.
8. The cutting current
can not be adjust
1.The wires loosen or
potentiometer
damaged
0
2.The setting circuit
problem.
1. Check the
potentiome¬ter if
middle pin to earth get
0-5V voltage. Replace it
if any damaged
2. Check if any wires
loosen from front board
to main board
3. Boards problem
0
Problems
Analysis
Solution
18
PLASMA CUTTER
OPERATION MANUAL
