14
IV. INSTALLATION OF POWER SOURCE
AND ACCESSORIES
4.1 LOCATION
Several factors should be considered when selecting
an installation site. Adequate ventilation is necessary
to provide cooling, and the amount of dirt and dust to
which the machine is exposed should be minimized.
There should be at least 18 inches of unrestricted space
between the Power Source's side and rear panels and
the nearest obstruction to provide freedom of air move-
ment through the Power Source.
The installation site should permit easy removal of the
Power Source outer enclosure for maintenance. In-
stalling or placing any type of filtering device will re-
strict the volume of intake air, thus subjecting the Power
Source internal components to overheating. Warranty
is void if any type of filtering device is used.
Do not operate the machine without the running
gear installed.
4.2 ASSEMBLY OF REAR WHEELS
The unit's running gear is factory assembled except
for the rear wheels which are packed loose and in the
shipping carton. The rear gear consists of two wheels,
four washers, two cotter pins, and an axle. To install
the gear, do the following:
A. Insert the axle through the holes provided at
the rear of the gear.
B. Place a washer onto each end of the axle. Slip
on the wheels and add another washer to the
outside of each wheel. Secure the whole
assembly by inserting a pin into each end of the
axle.
C. Remove the existing shipping supports by un-
screwing from chassis.
4.3 ELECTRICAL INPUT CONNECTIONS
In order to provide a safe and convenient means to
completely remove all electrical power from the Power
Source, it is highly recommended that a line discon-
nect switch be installed in the input circuit to the Power
Source.
BEFORE MAKING ELECTRICAL INPUT CONNEC-
TIONS TO THE WELDING MACHINE, "MACHINERY
LOCKOUT PROCEDURES" SHOULD BE EM-
PLOYED. IF THE CONNECTIONS ARE TO BE
MADE FROM A LINE DISCONNECT SWITCH, THE
SWITCH SHOULD BE PADLOCKED IN THE OFF
POSITION. IF THE CONNECTION IS TO BE MADE
FROM A FUSEBOX, REMOVE THE FUSES AND
PADLOCK THE COVER CLOSED. IF NO LOCKING
FACILITIES ARE AVAILABLE, ATTACH A RED TAG
TO WARN OTHERS NOT TO ENERGIZE THE CIR-
CUIT.
4.3.1 INPUT ELECTRICAL REQUIRE-MENTS
The primary input voltage requirements are shown on
the Power Source nameplate. The Power Source is
designed to be operated from a 208/230 V single-phase
50/60 Hz power supply.
Figure 4-1. Primary Connections
4.3.2 INPUT CONDUCTOR CONNECTIONS
The input power cord is provided with an attachment
plug. The plug will mate with a 250 Volt, 50 Amp re-
ceptacle conforming to NEMA 6-50R configuration.
The receptacle should be wired to a separately fused
disconnect or circuit breaker. This disconnect or
breaker can be wired to a single-phase system or to
two conductors of a three-phase system. A third con-
ductor for grounding should also be connected between
the disconnect and the receptacle.
