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SECTION
4
MAINTENANCE & TROUBLESHOOTING
~.:
k~-~
~
READ SAF
of manual
ETY
BLOCKS
at
beginning
before
proceeding.
Figure
4-1.
Maintenance Schedule
Table
4-1.
Troubleshooting
NOTE
Before using
troubleshooting
fable, check select ion and
preparation
of
tungsten
~_.
electrode
according
to
Section
5.
Turn Off
all power before
maintaining.
Torch Cable
Trouble
Remedy
Lack
of
high frequency~
difficulty
in
establishin~
-
Check
cables
and torch for cracks
or
bad connections. Be
sure
that torch cables
arc.
are
not CloSe to any
grounded
metal.
Repair
or
replace
necessary
parts.
Check
welding
power
source
high frequency
control, and if necessary. check
and
adjust
spark
gaps.
Torch gas valve
not
working
property
(if applicable).
Have
Factory
Authorized Service
Station/Service
Distributor check
valve.
Wandering
arc
poor control of direction of
arc.
Reduce
gas
flow
rate.
Tungsten
electrode
oxidizing
and
not
remaining
bright
after conctusion of weld.
Check gas
valve.
Shield
weld
zone
from drafts. Check and
tighten
all gas
fittings.
Increase
postftow
time.
OM1563
Page
5
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