Install The Shielding Gas; Check The Gas Flow - Craftsman 196.205690 Manual Del Usuario

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.
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 o_er and rupturing.
Read, understand, and follow all the COM-
PRESSED GASSES AND EQUIPMENT
HAZARDS in the SAFETY SUMMARY at the
front of this manual. Secure your gas cylin-
der to the welding cart, or other fixed sup-
port.
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
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.
12
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 adaptor
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; counterclockwise 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.
Note: If welding outside or in a draft, it may
become necessary to set up a wind break to
keep the shielding gas from being blown
from the weld area.