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5-2.
Overload
Protection
a
WARNING
~IVARNING
READ
Sectio
SAFETY
n
5
bet
or
BLOCKS
at
start
of
e
proceeding.
~-~ffIj
-~
When
overheated,
thermostat
Let
fan
run
for
Start
welding.
opens,
output
stops,
and
cooling
15
minutes.
fan
keeps
running.
ssblO.1
1/94ST-000
599-H
Figure
5-2.
Overheating
5-3.
Troubleshooting
ELECTRC
SHOCK
can
kill.
Do
not
tcuch
live
electrical
parts.
MOVING
PARTS
can
caus
Keep
away
from
moving
parts.
a
injury.
Turn
Off
welding
power
source,
and
disconnect
input
power
before
inspecting,
maintaining,
or
servicing.
HOT
PARTS
can
cause
severe
burns.
Allow
cooling
period
before
servicing.
Troubleshooting
to
be
performed
persons.
only
by
qualified
swam9.1
2/93
Table
5-1.
Welding
Trouble
Trouble
Remedy
Section
-~
Place
line
disconnect
switch
in
the
On
position.
3-5B
]
Check
for
open
line
luse(s),
and
replace
if
necessary.
Check
-~
3-5B
and
reset
circuit
breakers.
Check
for
proper
input
connections.
-~
3-5B
Check
for
proper
jumper
link
positions.
-~
3-5A
Thermostat
TP1
opEn.
Allow
a
cooling
period
of
approximately
-~
5-2
fifteen
minutes.
Check
push
button
Power
switch
linkage
for
restrictions
or
-~
obstructions.
-~
Clean
and
tighten
all
weld
connections.
-~
3-3
Place
Output
(Contactor)
switch
in
the
On
position
or
connect
-~
Figure
4-4
Remote
Contactor
Control
To
RC1.
Check
remote
contactor
control
switch
for
proper
operation
with
-~
an
ohmmeter,
and
rEplace
if
necessary.
Have
Factory
Authorized
Service
Station/Service
Distributor
-~
check
control
board
PCi.
No
weld
output;
unit
completely
inoperative.
No
weld
output;
pilot
light
PL1
on.
OM-168
256
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