Install The Shielding Gas; Check The Gas Flow - Craftsman 196.205040 Manual Del Usuario

Its ability to minimize spatter results in clean,
smooth weld appearances. In addition, it
provides good puddle control when welding
vertically or overhead.
Gas Selection For Stainless Steel Welding
The best shielding gas for stainless steel
welding is a mixture of 90% Helium, 7.5%
Argon, and 2.5% Carbon Dioxide. However,
100% Argon can also be used, but an
increase in the area being heated by the arc
will be experienced causing slightly greater
distortion of the base metal.
Gas Selection For Steel Welding With
Silicon Bronze Wire
Use only pure Argon when welding steel with
Silicon-Bronze wire.
Gas Selection For Aluminum Welding
with Aluminum Wire
Use only pure Argon when welding aluminum.

INSTALL THE SHIELDING GAS

WARNING
IMPROPER HANDLING AND MAINTE-
NANCE OF COMPRESSED GAS CYLIN-
DERS AND REGULATORS CAN RESULT
IN SERIOUS INJURY OR DEATH! Always
secure gas cylinders to the welding cart, a
wall, or other fixed support to prevent the
cylinder from falling over and rupturing. Read,
understand, and follow all the COMPRESSED
GASSES AND EQUIPMENT HAZARDS in the
SAFETY SUMMARY at the front of this manu-
al. Secure your gas cylinder to the welding
cart, or other fixed support.
1. Remove the protective cap from the cylin-
der and inspect the regulator connecting
threads for dust, dirt, oil, and grease.
Remove any dust or dirt with a clean
cloth. DO NOT ATTACH YOUR REGULA-
TOR IF OIL, GREASE, OR DAMAGE
ARE PRESENT.
2. Open the cylinder valve FOR JUST AN
INSTANT to blow out any foreign matter
inside the valve port. Never aim the open
valve cylinder port at yourself or
bystanders.
3. Screw the regulator into the cylinder
12
valve and tighten with a wrench.
4. Firmly push the gas hose over barbed fit-
tings on back of welder and regulator.
5. Secure both ends of hose onto barbed fit-
tings with hose clamps.

CHECK THE GAS FLOW

WARNING
IMPROPER HANDLING AND MAINTENANCE
OF COMPRESSED GAS CYLINDERS AND
REGULATORS CAN RESULT IN SERIOUS
INJURY OR DEATH. To reduce the risk of
injury or death, always stand to the side of the
cylinder opposite the regulator when opening
the cylinder valve, keeping the cylinder valve
between you and the regulator. Never aim the
open cylinder valve port at yourself or
bystanders. Failure to comply with this warning
could result in serious personal injury.
Note: If the cylinder you have is equipped
with male regulator connecting threads
instead of female, you will need to obtain a
special compressed gas cylinder adapter
from your gas supplier to install between
your gas cylinder and regulator.
-The gas control function does not require
the welder to be turned on or plugged in.
-To avoid damage to your regulator, make
sure you have the regulator valve closed
before opening the cylinder valve.
1. Slowly crack open the cylinder valve,
then turn open ALL THE WAY.
2. Pull the trigger on the gun to allow the gas
to flow. KEEP THE TRIGGER PULLED.
Listen and feel for gas flowing from the end
of the welding gun. If your regulator has no
adjustment, it has been preset at the factory
for a flow of 20 cubic feet per hour. If your
gas regulator has an adjustment to control
the gas flow rate, turn the adjustment key
clockwise to increase gas flow; counter-
clockwise to reduce flow. For most welding,
the gas flow should be set at 15-20 cubic
feet per hour. If no gas is heard or felt, verify
all steps involved in connecting the gas.
3. Release the trigger.