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SECTION
5- MAINTENANCE &
TROUBLESHOOTING
£~
WARNING
ELECTRIC
SHOCK
can
kill;
SIGNIFICANT DC VOLTAGE exists after
removal of
input
power.
Do
not touch live
electrical
parts.
Turn Off
welding
power
source,
disconnect
input
power, wait 60
seconds,
measure
voltage
on
input
capacitors according
to
Section
5-2,
and be
sure
voltage
is
near zero
before
touching
any
parts.
HOT PARTS
can cause severe
burns.
Allow
cooling
period
before
maintaining
or
servicing.
5-1.
Routine Maintenance
~
l~IPi~.~
MOVING PARTS
can cause
Injury.
Keep
away
from
moving
parts.
~pI~
STATIC ELECTRICITY
can
damage
parts
on
circuit boards.
Put
on
grounded
wrist
strap
BEFORE
handling
boards
or
parts.
Use
proper
static-proof bags
and boxes.
Maintenance
to
be
performed only by qualified
persons.
swam8.3
2/94
Figure
5-1. Maintenance
Schedule
-~
3 Months
~Replace
~j
Cracked
Parts
14/17-Pin Cord
~
Gas Hose
Torch Cable
-~
6 Months
Blow Out
Or
Vacuum
Inside
During Heavy
Service,
Clean
Monthly
3 Months
~
WARN~
Replace
See
Unreadable
Section
Labels
Clean
~r
And
Tighten
Weld
3-4
Connections
Turn Off all power before
maintaining.
~iii!~~
ST-148
123~A
OM-2204
Page
15