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5-2.
Overload
Protection
\~
READ
Sectio
SAFETY
n
5
befor
BLOCKS
at
start
of
e
proceeding.
minutes
When
overheated,
thermostat
Let
fan
run
for
Start
welding.
opens,
output
stops,
and
cooling
15
minutes.
fan
keeps
running.
ssblO.1
1194-ST-000
599-H
Figure
5-2.
Overheating
5-3.
Troubleshooting
4~
WARNING
ELECTRIC
SHOCK
can
kill.
MOVING
PARTS
can cause
injury.
Do
not
touch
live
electrical
parts.
Keep
away
from
moving
parts.
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
only
by
qualified
persons.
swamg.1
2/93
Table
5-1.
Welding
Trouble
-
Trouble
Remedy
Section
No
weld
output;
unit
completely
j.
-~
Place
line
disconnect
switch
in
the
On
position.
inoperative.
-
Check
for
open
line
fuse(s),
and
replace
if
necessary.
Check
and
reset
circuit
breakers.
Check
for
proper
input
connections.
Check
for
proper
jumper
link
positions.
Thermostat
TP1
open.
Allow
a
cooling
period
of
approximately
fifteen
minutes.
Check
push
button
Power
switch
linkage
for
restrictions
or
obstructions.
No
weld
output;
pilot light
PLI
on.
-~
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.
OM-168
256
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