19
TROUBLESHOOTING
Serial
Fault
Analysis of fault
Method of overcome fault
1
fan don’t
rotate
Fan is broken
change fan
connecting cable
drop up (or break
off)
find where is cable break up
and connect it
2
no arc
high
frequenc
y
switch of torch is
broken
change switch of torch
main control
board was broken
change main control board
connecting cable
drop up ( or break
off)
find where is cable break up
and connect it
3
no Argon
output
no Argon input
check flow meter and hose
and recovery to feed welder
air
main control
board was broken
change main control board
electromagnetic
gas valve was
broken
change electromagnetic gas
valve
air path was
blocked
clean foreign body and
dredge air path
4
no
cooling
water
output
water pressure is
not enough
increase cooling water
pressure
water path was
blocked
clean foreign body and
dredge water path
5
protectio
n
indicator
light up
inner overheat
when the inner temperature is
low recover normal
15% over/lack
pressure over
15% of power
supply
when voltage normal machine
will recovery
6
panel
knob do
potentiometer
was broken
change potentiometer
Содержание POWERTIG 300DPIII
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