Miller 900019 Manual de instalación y funcionamiento - Página 11
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SECTION
5-
MAINTENANCE
I
I
1~~
Be
sure
the branch
circuit,
main disconnect switch
or
circuit fuses
are
removed before
attempting
any
inspection,
or
work
on
the inside of the
welding
ma
chine.
Placing
the Power switch
on
the
welding
ma
chine in the OFF
position,
does not
remove
voltage
from
the
power
terminal inside of the
machine.
5-1.
TRANSFORMER
Occasional
blowing
out the dust and dirt
from
a-
round the
transformer
is
recommended.
This should
be done
periodically depending
upon
the location of
the Unit and the amount of dust and dirt
in the at
mosphere.
A
clean
dry
air stream should be used
for this
cleaning
operation.
5-2.
FAN MOTOR
(225
Amp
Models
Only)
The fan motor
bearings
are
of OIL LITE
con
struction.
Apply
a
few
drops
of
light
machine oil to
the
two
oil
cups
on
the
fan motor
once
a
year.
Be
sure
not to
over
oil.
Excess oil may
get
on
the
power transformer
windings
and may
damage
the
insulation of the
transformer
winding.
5-3.
MOVABLE SHUNT
Approximately
once
a
year,
it
may
be
necessary
to lubricate the lead screw,
guides
and shunt slide.
Apply
a
light
coat
of
fairly high
temperature
grease,
taking
care
to
avoid
getting
grease
on
any
other
part
of the
welding
machine.
Use
SOCONY
BBB
high
temperature
grease
or
equipvalent.
SECTION
6
-
TROUBLESHOOTING
A.
TROUBLE:
No
Output
or
welding
current.
PROBABLE CAUSE:
1. Blown
line
fuses.
Bad
or
open POWER
switch.
C.
TROUBLE:
High
Output
PROBABLE CAUSE:
1. Check
line
voltage.
2.
Check
position
of JUMPER links
on
PRIMARY In
put
terminal board if
so
equipped.
B.
TROUBLE:
Erratic
welding
current.
PROBABLE CAUSE:
1.
Loose
connection
on
POWER
switch,
JACK
re-
ceptacles
or
POWER
cord.
2.
Bad
or
damp
electrodes,
D.
TROUBLE:
Low
Output.
PROBABLE CAUSE:
1. Check line
voltage.
2. Check
position
of JUMPER links
on
PRIMARY In-
put
terminal board if
so
equipped.
NO. 8-A RUNNING GEAR
Has
four
5
solid
rubber tire wheels which bolt to
the frame of the
welding
machine.
Towing
handle bolts
to the recessed
front
panel
and
conveniently
folds
into
the recessed
portion
of the front
panel
when not in
use.
NO. 21C2 RUNNING GEAR
Four
21/2
ball
bearing
steel wheel swivel casters
which
bolt
to
the
frame
of
the
welding
machine.
No
towing
handile
supplied
with
this
running
gear.
CAUTION
I;
L
80
AMPERE
LIMITED INPUT
AC.
WELDER
POWER FACTOR
CORRECTION
-OPTIONAL
POWER CORD
I
PLUG
225 AMPERE LIMITED
INPUT
A,C
WELDER
ROWER
FACTOR
CORRECTION
-
OPTIONAL
Circuit
Diagram
No.
A-408-F1
SECTION
7-
OPTIONAL
EQUIPMENT
Circuit
Diagram
No. A-522-A2
Figure
7-1. 8-A
Running
Gear
AA.040 031-1
IOM-114A-Page
9