WeldKing COOLTIG220 - Page 35

Manual no. WDT90100 Page 32
CoolTig - 220
igniting
board when
pull the
trigger.
The distance
between the HF
discharger poles is
too close.
Adjust distance to
about 0.7mm
Fuse melt or poor
contact
Check and repair
Control circuit
board failure
Check and repair the
circuit board
AC Contactor
failure
Check, repair, replace
Gun trigger or
control cable
broken
Check, repair, replace
Control transformer
failure
Check, repair, replace
Main transformer
failure or poor
contact
Check, repair, replace
15 Unstable or wandering
arc
Gas not pure Changes gas
Gas pressure too
high
Reduce pressure