MIDWEST FASTENERS UA500, Owner'S Manual

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©2010
MIDWEST FASTENERS, INC.
— UA500 Stud Welding System 6
SETTING UP THE WELDER -
SUPPLYING POWER
LOCATING THE POWER SUPPLY
The proper location of the power supply is essential
for dependable service. The unit should be located
so as to allow for free air movement into and out of
the power supply. Consideration should be given
to allow the least exposure possible to dust, dirt,
moisture and corrosive vapors. A minimum of 18
inches of unrestricted space must be maintained
between the power supply’s front and rear panels
and the nearest obstruction. The underside of
the power supply must be completely free of all
obstructions. Attention should be given to ease
of removal of the power supply’s enclosure for
maintenance functions.
ELECTRICAL INPUT REQUIREMENTS
This welding power supply is designed to be
operated from single-phase, 60hz, AC Incoming
power lines (which have a voltage rating that
corresponds to one of the input voltages shown on
the nameplate) and a solid earth ground. Consult
your local electric utility if there is any question
about the type of electrical system available at the
installation site or how proper connections to the
welding power supply are to be made.
CHANGING THE INPUT VOLTAGE
(If Required)
The power supply is shipped setup for 460 volts. The
input voltage jumper links provided on the primary
terminal board permit the unit to be operated from
various line voltages and frequencies: 208, 230, 460
volts at 60 hertz.
If the power supply is to be operated at some voltage
other than 460 volts, the input voltage jumper links
must be changed. See the input voltage label inside
the unit's back door (reference diagram below) for
the various arrangements of the jumper links for the
specific input voltage.
NOTE:
If only one jumper link is required on each grouped
terminals, it is recommended that -the unused
jumper links be placed across the terminals which
are to be used. This will prevent losing the jumper
links which are not required for this connection.
INPUT VOLTAGE SETTINGS
L1
3
L2
7
6 1
5
2
GND.
L1
3 4
L2
6 1
5 2
GND.7
L1
3
L2
7
6
1
5
2
GND.
575 VOLT 460 VOLT 230 VOLT
TRANSFORMER TERMINAL BOARD JUMPER BAR INSTALLATION
POWER /CONTROL UNIT
TRANSFORMER RECTIFIER
230 / 460 / 575 VOLT 60 HZ. SINGLE PHASE
230 VOLT OPERATION
100 AMP FUSETRON FUSES
OR CIRCUIT BREAKER
460 VOLT OPERATION
50 AMP FUSETRON FUSES
OR CIRCUIT BREAKER
575 VOLT OPERATION
40 AMP FUSETRON FUSES
OR CIRCUIT BREAKER
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