Miller 900 869 Quick Start Manual - Page 5
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SECTION
2-
INTRODUCTION
Model
Rated
Welding
Current Amperes
Open-Circuit
Voltage Range
Maximum
Open-
Circuit
Voltage
Amperes Input
At Rated
LoadOutput60Hz.
Three Phase
230 Volts
460 Volts
kva
kw
.
Dimensions
(Inches)
Weight
(Pounds)
Net
Ship
Amperes
750 @
35 Volts
100%
Duty
Cycle
15-49
49
92
46
36.6
33.2
Height
-
56-1/2
Width
-
27-1/4
Depth
-
35-3/4
895
955
1000
Amperes
30 Volts
100%
Duty Cycle
15-47
47
120
60
47.7
43.5
Height-56.1/2
Width
-
27-1/4
Depth
-
38
1145
1215
Figure
2-1.
Specifications
2-1.
GENERAL
This manual has been
prepared especially
for
use
in familiar
izing
personnel
with the
design, installation, operation,
main
tenance, and
troubleshooting
of this
equipment.
All informa
tion
presented
herein should be
given
careful consideration
to
assure
optimum performance
of this
equipment.
2-2.
RECEIVING-HANDLING
Prior
to
installing
this
equipment,
clean all
packing
material
from around
the unit and
carefully inspect
for any
damage
that
may
have occurred
during shipment.
Any
claims for loss
or
damage
that
may
have occurred
in
transit
must
be filed
by
the
purchaser
with the carrier. A copy of the bill of
lading
________________________________________________________
and
freight
bill will be furnished
by
the carrier
on
request
if
occasion
to
file claim arises.
When
requesting
information
concerning
this
equipment,
it is
essential
that Model
Description
and/or
Stock Number and
Serial
(or
Style)
Numbers of the
equipment
be
supplied.
2-3.
DESCRIPTION
This
Unit is
a
three-phase welding
power
source
which pro
duces dc
welding
current.
This
welding
power
source
is
________________
designed specifically
for
use
with the
Gas Metal-Arc )MIG)
Welding
process.
2-4.
SAFETY
Under this
heading, explanatory
statements
will
be
found
that
need
special emphasis
to
obtain the
most
Before
the
equipment
is
put
into
operation,
the
safety
sec-
efficient
operation
of the
equipment.
tion
at
the front of this manual should be reed
completely.
SECTION
3
-
INSTALLATION
3-1.
LOCATION
(Figure
3-1)
A proper installation Site should be selected for the
welding
power
source
if the unit is
to
provide dependable
service,
and
remain
relatively
maintenance free.
A proper
installation site
permits
freedom of
air
movement
into
and
Out
of the
welding
power
source,
and also least
subjects
the unit
to
dust, dirt,
moisture,
and corrosive vapors.
A minimum of 18 inches of unrestricted space
must
be main
tained
between
the
welding
power
source
front and
rear
panels
and the
nearest
obstruction.
Also,
the
underside of the
welding
powe(
source
must
be
kept completely
free
of
obstructions. The installation site should also
permit
easy
removal
of the
welding
power
source
outer
enclosure for
maintenance
functions.
place
an
r;
over
the in take
air
pas~ges of the
welding
power
source
as
this would
restrict the volume of intake air and
thereby subject
the
welding
power
source
internal components
to
an
overheating
condition
and
subsequent
failure. War-
TB.039 388
ranty is void if
any
type of
filtering
device is used.
i
Figure
3-1. Dimensional
Drawing
This will
help
avoid
possible injury
due
to
misuse
or
improper
welding applications.
The
following
definitions
apply
to
CAUTION, IMPORTANT,
and
NOTE blocks
found
throughout
this manual:
1Irq~i~iiii.i~1
I
Under this
heading, installation, operating,
and
main
tenance
procedures
or
practices
will be found that if
not
carefully
followed
may
create
a
safety
hazard
to
personnel
I
~J~=ANT
U
Under
this
heading, installation, operating,
and main
tenance
procedures
or
practices
will be
found
that if
not
carefully
followed
may
result in
damage
to
equip
ment.
U
NOTE
1
U
U
U
5-1/2
OM-238
Page
5