Section I. SERVICE UPON RECEIPT OF MATERIAL
located behind the front panel of the welding ma-
2-1. Unloadinghhe Equipment
chine. It is recommended that the welding leads be
kept as short as possible to prevent high frequency
a. Remove all fastening devices securing the weld-
ing machine to the delivery vehicle.
Warning: Do not operate the welding machine
b. Remove the welding machine with
until if has been connected to a suitable ground.
other suitable lifting equipment.
An ungrounded machine can cause death by
Caution: The welding machine is heavy. Use
electrocution of personnel coming in contact with
care when lifting and use equipment with a safe
lifting capacity of at least 1000 pounds.
c. External Ground Connections. The welding ma-
chine must be grounded prior to operation. Proper
grounding of the welding machine will minimize
shock hazard and reduce emission of radio inter-
Caution: Do not damage the welding machine
ference signals. It has been determined that the best
while removing the wooden box. To protect the
ground is a copperweld ground rod having a mini-
welding machine from damage, the machine is
mum diameter of 5/8 inch, driven at least 8 feet into
wrapped in heavy paper and cardboard and then
the ground as close as possible to the machine. In an
is crated in a wooden box.
emergency, an ordinary steel or brass pipe of 3/4 inch
(1) Remove all metal banding with a suitable
or greater diameter driven to a minimum depth of
8 feet; or a metal plate having a minimum area of 9
(2) Using a claw hammer, pry bar, nail puller,
square feet buried at least 4 feet under ground, can
or any other suitable tool, remove the wooden box.
be used. Rust and electrolytic corrosion will eventual-
b. Depreservation. Follow instructions for the in-
ly destroy these pipes or metal plates; therefore they
spection and operation of the welding machine as
should never be used as a permanent installation or
outlined in DA Form 2258.
for an extended period of time. Treating the soil with
2-3. Inspecting and Servicing
a conducting solution (outlined in (l), (2), and (3)
a. Check packing list for missing parts and com-
brass but will not adversely affect the copperweld
grounding rod. A No. 6 AWG, flexible, stranded
b. Inspect the equipment for damage parts, dents,
copper wire (or larger) is recommended for connect-
scratches, and damaged housing.
ing the ground rod to the work terminal of the welder
c. Check that lifting eyes, panels, hardware and
(fig. 3-l). When
is located near
fittings are tight.
wall and the earth beyond this wall is exposed, the
d. Check that controls and switches are intact.
ground rod can be placed outside the building.
e. Perform the daily preventive maintenance serv-
Where a ground lead more than 8 feet in length is
required to reach an outside ground rod, it is best to
Installation and Setup
use a ground rod inside the building, immediately
adjacent to the welder. If the building has a concrete
a. Location. Place the welding machine near power
floor, it will be necessary to make an opening approx-
source, water supply facilities, and gas facilities with
imately 6 inches in diameter all the way through the
at least 36 inch clearance on all sides for proper
concrete floor in order to be able to properly treat the
ventilation and for maintenance accessibility.
b. Ground and Electrode Cable Connections. Refer
earth around the ground rod. The ground rod should
be driven below the level of the concrete surface and
a cover provided to avoid accidents.
ground terminal stud and electrode terminal stud