Nothern Industrial Tools Plasma 275 Operator's Manual - page 12
11
Plasma Cutter
Operating Instructions and Parts Manual
Plasma Cutter
Plasma 275
Trouble shooting Chart
Symptom (s)
Possible Causes(s)
Corrective Action(s)
Power Indicator
Light is off after
turning on the
power supply.
1.The light is broken.
2.Fuse is blown.
3.Not 120V Input Voltage.
4.Power supply switch is
broken.
5.Controlling board or cutter
is damaged.
1.Replace.
2.Replace.
3.Connect the 120V Input
cable.
4.Replace.
5.Examine and repair.
Fan doesn’t work
after turning on the
power supply.
1.Fan is damaged.
2.Fan’s ground lead is
broken.
3.Fan’s blade is blocked
4.Transformer is damaged.
1.Replace.
2.Examine and repair.
3.Clean the block.
4. Replace.
Low Pressure
Indicator Light is
on
1.No input compressed air
2.Air/gas pressure valve is
adjusted to 0 or broken.
3.Air/gas pressure circuit is
blocked
4.Air/gas pressure valve is
damaged
1.Examine and repair.
2.Adjust or replace.
3.Clean the block.
4.Replace.
No Air/gas check
function.
1.Air/Gas valve is ruined.
2.Air/Gas circuit is blocked.
3.Air/Gas check switch is
ruined
4.Ground lead is broken.
1.Replace.
2.Clean the block.
3.Replace.
4.Examine and repair.
Can’t cut or no
high frequency
output.
1.Discharge gap is too big.
2.High pressure mica
capacitance damaged.
3.Pilot transformer is
damaged.
4.Main controlling board is
damaged.
5.Ground lead is broken
1.Adjust to suitable gap.
2.Replace.
3.Replace.
4.Examine and repair.
5.Examine and repair.
No response after
turning on the torch
switch.
1.Switch and ground-lead are
broken.
2.Switch board is broken.
3.Main controlling board is
damaged.
4.Transformer is damaged.
5.Ground lead is broken.
1.Examine and repair or
replace.
2.Examine and repair or
replace.
3.Examine and repair or
replace.
4.Replace.
5.Examine and repair.
No response after
turning on power
1.Power cord hooked up
wrong.
1.Examine and repair.
2.Replace.