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INSTALLING THE SHIELDING GAS SUPPLY
NOTE:
The following steps cover the installation of the Shielding Gas Valves, Hose and Tank (not included). See “Shielding Gas Flow Adjustment” under:
“OPERATING THE MIG 90 WELDER”.
BUILDUP OF GAS CAN INJURE OR KILL!
•
Shut off shielding gas supply when not in use.
•
Always ventilate confined spaces or use approved air-supplied respirator.
•
Always turn your face away from valve outlet when opening cylinder valve.
CYLINDERS CAN EXPLODE IF DAMAGED!
Shielding gas cylinders contain gas under high pressure. If damaged, a cylinder can explode. As gas cylinders are a normal component of
the welding process, use extra care to handle them carefully.
•
Protect compressed gas cylinders from excessive heat, mechanical shocks, physical damage, slag, open flames, sparks, and arcs.
Keep away from any welding or other electrical circuits.
•
Install cylinders in an upright position by securing to a specifically designed rack, cart, or stationary support to prevent falling
or tipping over.
•
Never weld on a pressurized cylinder or explosion will occur.
•
Use only correct shielding gas cylinders, regulators, hoses and fittings designed for the specific application; maintain them and
all related components in good condition.
•
Keep protective cap in place over valve except when cylinder is in use.
•
Use proper equipment, procedures and have adequate help when moving or lifting cylinders.
A Shielding Gas Bottle is
NOT INCLUDED
with the Eastwood MIG 90 but is necessary to weld using Solid Wire. It can be bought at most local Welding
Supply Stores. Eastwood recommends the use of 75% Argon / 25% CO2 for shielding gas when MIG welding Steel, 100% Argon for Aluminum, and Tri-Mix
(90% He / 7.5% Ar / 2.5% CO2) for Stainless Steel.
• Place the Eastwood MIG 90 in a secure dedicated area or on a welding cart (not included).
• Secure the Shielding Gas Bottle to a stationary object or mount to a specifically designed welding cart, equipped to hold one so that the cylinder
cannot fall over.
• Remove the cap from the Shielding Gas Bottle.
• Insert the large brass male fitting on the Shielding Gas Regulator
[C]
into the female fitting on the Shielding Gas Bottle (not included).
• Tighten the fitting with a wrench until snug, do not over tighten.
• Connect the fitting end of the Shielding Gas Line
[D]
included with the Eastwood MIG 90 to the fitting on the Regulator and wrench tighten until snug.
• Slip the hose clamp over the other end with no fitting, and then connect it to the barbed fitting on the rear of the Eastwood MIG 90 and tighten the hose
clamp until snug with a screwdriver
(FIG 2)
.
• Check the gas line for leaks by slowly opening the valve on the gas bottle. When welding, the valve on the bottle should always be fully open.
Close it when done welding to avoid loss of gas.
Do not use White Thread Sealing Tape on this connection as it is an inert spherical gas fitting and does not require it.
If you have a leak check for burrs or dirt in the threads or on the spherical joint.
