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SECTION
4
MAINTENANCE
&
TROUBLESHOOTING
4..
~.
~
V~
~
READSAF
of
manual
ETYBLOCKSatbeginning
before
proceeding.
Figure
4-1.
Maintenance
Schedule
Table
4-1.
Troubleshooting
N
OTE
1
Before
using
troubleshooting
table,
check
selection
and
preparation
of
tungsten
electrode
according
to
Section
5.
Trouble
Remedy
Lack
of
high
frequency~
difficulty
in
establishing
~
Check
cables
and
torch
for
cracks
or
bad
connections.
Be
sure
that
torch
cables
arc.
Torch
gas
valve
not
working
properly
-~
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.
Have
Factory
Authorized
Service
Station/Service
Distributor
check
valve.
(if
applicable).
Wandering
arc
poor
control
of
direction
of
arc.
~
-..j
Reduce
gas
flow
rate.
Tungsten
electrode
oxidizing
and
not
remaining
-~
Shield
weld
zone
from
drafts.
Check
and
tighten
all
gas
fittings.
bright
after
conclusion
of
weld.
Increase
postflow
time.
Check
gas
valve.
Turn
Off
all
power
before
maintaining.
~~Replace
Cracked
Parts
3-1,
3-3
Torch
Body
Gas
Hose
Torch
Cable
.
OM-1563
Page
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