Know Your Welder - Craftsman 196.205080 Manual De Usuario

KNOW YOUR WELDER

Figure 1. Model 20508 Welder
Handle – Rugged, top mounted handle
allows for easy transport of your welder.
Wire Speed Control – Use this dial to adjust
the speed at which the welder feeds wire to
the gun. 1 is the slowest wire feed speed, 10
is the highest. You will need to adjust or
"tune-in" your wire speed for different welding
conditions (thickness of metals, gas -vs-
gasless welding, metal type, wire size, etc.).
When the wire speed is properly "tuned-in"
the welding wire will melt into the material you
are welding as quickly as it is fed through the
welding gun.
Spot Timer - Use this dial to control the
length of time the welder will lay a bead in
spot mode. Setting one is the shortest and
setting 10 is the longest. Turn this dial to the
OFF position when continuous welding is
desired.
Ground Cable – The ground cable connects
the ground clamp to the internal workings of
the welder.
Ground Clamp – Attaching the ground
clamp to your work piece "completes" the
welding current circuit. You must attach the
ground clamp to the metal you are welding. If
the ground clamp is not connected to the
metal work piece you intend to weld, the
welder will not have a completed circuit and
you will be unable to weld. A poor connection
at the ground clamp will waste power and
heat. Scrape away dirt, rust, scale, oil or
paint before attaching the ground clamp.
Welding Gun and Cable – The welding gun
controls the delivery of the welding wire to
the material to be welded. The welding wire
is fed through the welding cable and welding
gun when the welding gun trigger is pulled.
You will need to install a contact tip and
welding nozzle to the end of the welding gun,
as described later in this manual, prior to
welding.
Power Cord – This is a standard, 220 volt
power cord, with NEMA 6-50P 50 amp plug.
(Make sure you are using a properly ground-
ed 220 Vac, 60Hz, single phase, 50 amp
power source.)
Voltage Selector – This 7 position dial
adjusts the voltage or "heat" of your welder.
A is the lowest setting and G is the highest.
Different materials and material thickness will
require different voltage settings. You will
need to adjust your voltage accordingly for
different welding conditions. By properly
adjusting your voltage settings and wire feed
speed, you will enable clean, precision
welds. (Refer to the Suggested Settings
Chart on p.32 of this manual OR on the
inside of the door of the welder.)
Power Switch – This switch turns the welder
ON and OFF. (Make sure the power switch is
in the OFF position before performing any
maintenance on the welder.)
Welding Terms
Now that you are familiar with the main parts
of the welder, make note of the following
terms. You will see them used throughout
this manual.
weld puddle: The localized volume
of molten metal in a weld prior to its
solidification.
weld angle: The angle of the welding wire,
as it extends from the welding gun, in
relation to the item being welded.
slag: The protective coating that forms on
the surface of molten metal.
arc: A sustained luminous discharge of
electricity across a gap in a circuit.
welding bead: The extended build up of a
weld, made by pushing or pulling the weld
puddle.
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