Shielding GAS

Extension Cord

If an extension cord is required, use one that is rated for the application and is 3 conductor #14 AWG (2.1 mm2) or larger. The recommended maximum lengths are 25 ft (7.5 m) if #14 AWG (2.1 mm2) is used and 50 ft (15 m) if #12 AWG* (3.3 mm2) is used.

*AMERICAN WIRE GAUGE

When using the GMAW process, a cylinder of carbon dioxide (CO2) or argon-carbon dioxide mixed shielding gas, flow regulator, and an inlet gas hose must be obtained.

The Lincoln K463 CO2 or K499 Ar-mixed gas regula- tor and hose kit is recommended for use with the SP- 100.

Weld shielding gas may be obtained from a welding supply distributor.

WARNING

CYLINDER may explode if damaged.

• Keep cylinder upright and chained to

support.

• Keep cylinder away from areas where it may be damaged.

•Never lift welder with cylinder attached.

•Never allow welding electrode to touch cylinder.

•Keep cylinder away from welding or other live elec-

trical circuits.

BUILDUP OF SHIELDING GAS may harm health or kill.

• Shut off shielding gas supply when not in use.

SEE AMERICAN NATIONAL STANDARD Z-49.1, “SAFETY IN WELDING AND CUTTING” PUBLISHED BY THE AMERICAN WELDING SOCIETY.

------------------------------------------------------------------------

Flow regulator	Cylinder valve
Flow regulator
Gas hose

1.Chain the cylinder to a wall or other stationary sup- port to prevent the cylinder from falling over. Insulate the cylinder from the work circuit and earth ground.

2.With the cylinder securely installed, remove the cylinder cap. Stand to one side away from the out- let and open the cylinder valve very slightly for an instant. This blows away any dust or dirt which may have accumulated in the valve outlet.

WARNING

BE SURE TO KEEP YOUR FACE AWAY FROM THE VALVE OUTLET WHEN “CRACKING” THE VALVE. Never stand directly in front of or behind the flow regulator when opening the cylinder valve. Always stand to one side.

------------------------------------------------------------------------

3.Attach the flow regulator to the cylinder valve and

tighten the union nut securely with a wrench. Flow regulator for carbon dioxide must have plastic washer seated in the fitting that attaches to the cylinder.

4.Attach one end of inlet gas hose to the outlet fitting of the flow regulator and tighten the union nut securely with a wrench. Connect the other end to the SP-100 inlet gas fitting (5/8 – 18 female threads

— for CGA – 032 fitting). Make certain the gas hose is not kinked or twisted.

5.For CO2, open the cylinder valve slowly. For argon- mixed gas, open cylinder valve slowly a fraction of a turn. When the cylinder pressure gauge pointer stops moving, open the valve fully.

6.If using a regulator with an adjustable flowmeter, close the gun trigger and adjust the flow to give 15 –20 cubic ft per hour (CFH) (7 – 10 L/min) [use 20

– 25 CFH (10 – 12 L/min) when welding out of posi-

tion or in a drafty location for C02]. For argon mixed gas, adjust the flow to give 25-30 CFH (12-14 L/min).

7.Keep the cylinder valve closed, except when using the SP-100. When finished welding:

a)First close the cylinder valve to stop gas flow, b)then depress the gun trigger briefly to release the

pressure in the gas hose. c) turn off the SP-100.

OPTIONAL ACCESSORIES INSTALLATION

K463 C02 Gas Regulator and Hose Kit

Install the pressure-flow regulator to a cylinder accord- ing to the instructions in Section 1.10. Make certain the plastic washer is seated in the fitting that attaches to the C02 cylinder. Connect one end of the 10 foot (3.0 m) hose to the SP-100 gas inlet fitting and the other end to the regulator outlet fitting.

The K463 C02 pressure-flow regulator is preset at the factory to give a flow rate of 20 cubic feet per hour (10 l/min). This setting cannot be changed.

The K463 C02 pressure-flow regulator can be used on

acylinder of argon-mixed gas if a CGA-580-320 (Western Enterprises No. 810) adapter is used between the cylinder and the regulator.

– 12 –