diameter of 5/8 inch if solid or , inch if pipe,
to prevent unit from settling or sinking. The
and must be driven to a minimum depth of 8
unit should be as level as possible at all times.
feet. A ground plate must have a minimum
Whenever possible, position welding machine
area of 9 square feet and be buried a minimum
close to work so that short cables can be used.
depth of 4 feet. The ground lead must be No. 6
b. Indoor Instalation. When welding ma-
AWG (American Wire Gage) copper wire and
chine is to be installed in an enclosed area,
make sure floor of structure is of sufficient
be bolted or clamped to the rod, plate, or pip-
strength to support weight of unit. Make sure
ing system. Connect other end of ground lead
enclosure is well ventilated with a maximum
to welding set ground terminal stud.
supply of fresh air available to unit. Install a
Warning: Do not operate welding set until
suitable exhaust pipe extension to carry ex-
ground terminal stud has been connected to a
haust fumes outside the enclosure. Install
suitable ground. Electrical faults in the welder
suitable shields for the extension where it
set, load lines, or equipment can cause death
passes through flammable walls.
by electrocution from contact with an under-
Warning: Do not operate arc welding ma-
chine in an enclosed area unless exhaust gases
are piped to the outside. Inhalation of exhaust
fumes will result in serious illness or death.
2-6. Equipment Conversion
The unit is capable of providing 115 volts of
c. Ground. The welding set must be grounded
prior to operation. The ground can be, in order
direct current for the operation of lights or
of preference, an underground metallic water
small power tools. Refer to paragraph 214c
for instructions to convert the welding ma-
piping system, a driven metal rod, or a buried
metal plate. A ground rod must be a minimum
Section II. MOVEMENT TO A NEW WORKSITE
distances where the terrain permits. Secure a
27. Dismantling for Movement
a. Preparation for Movement.
suitable towing device to the tie-down rings
(1) Disconnect welding cables and re-
on the skid base and tow the unit to a new
mote control, if used, (fig. 2-1).
c. Long Distance Movement. The welding
machine may be hoisted or skidded on a suita-
ble carrier for movement over long distances.
(3) Close and latch all doors.
(4) Refer to the basic issue items list and
2-8. Reinstallation After Movement
make sure that all items listed are on or with
The welding machine should be installed or
setup after movement in accordance with pro-
b. Short Distance Movement. The welding
cedures outlined in paragraph 2-5.
machine may be towed or skidded for short
Section III. CONTROLS AND INSTRUMENTS
2-2, 2-3, and 2-4. Although the nomenclature
This section describes, locates, illustrates, and
of the individual controls and instruments
furnishes the operator sufficient information
may vary slightly, their functions are basically
about the various controls and instruments for
proper operation of the welding machine. Re-
a. Battery ammeter. Indicates
fer to figure 2-2 for Model LE 300; figure
2-3 for Model LEW 300; and figure 2-4 for
b. Oil Pressure Gauge. indicates engine lu-
bricating oil pressure.
c. Water- Temperature Gauge. Indicates en-
This paragraph describes the functions of the
gine coolant temperature.
controls and instruments illustrated in figures