Lincoln Electric K497, K2950 manual Operation

b-1 OPERATION b-1

Read and understand this entire section before operating your machine.

SAFETY PRECAUTIONS

WARNING

ELECTRIC SHOCK can kill.

•Do not touch electrically live parts such as output terminals or internal wiring.

•Insulate yourself from the work and ground.

•Always wear dry insulating gloves.

FUMES AND GASES can be dangerous.

• Keep your head out of fumes.

• Use ventilation or exhaust to remove fumes from breathing zone.

WELDING, CUTTING and

GOUGING SPARKS

can cause fire or explosion

•Keep flammable material away.

•Do not weld, cut or gouge on containers that have held combustibles.

ARC RAYS can burn.

•Wear eye, ear and body protection.

Only qualified personnel should operate this equip- ment. Observe all safety information throughout this manual.

GENERAL DESCRIPTION

The MAGNUM® & MAGNUM® PRO CURVE 200 amp GMA gun and cable assembly has been designed to meet NEMA specification EW3 for weld- ing with steel electrode using the GMAW (gas metal arc welding) and gas-shielded FCAW (flux-cored arc welding) processes: See Table B.1 and Table B.2.

The K497 MAGNUM® & K2950 MAGNUM® PRO CURVE gun is not factory equipped with a feeder end connector. With the K466-1 MAGNUM® Connector Kit, it can be used with any Lincoln LN-7, LN-8, LN-9, SP200 or LN-25 semiautomatic wire feeder. An optional K481 MAGNUM® Fast-Connect Gas Tube Kit is available to provide tool-less gas tube connection to Lincoln wire feeders. Non-GMA model wire feeders require an optional gas solenoid valve.

The K497 gun can also be used with any wire feeder equipped with a Tweco® # 1, 2, 3, 350 or 4 wire feed adapter kit by using the K466-2 Adapted Feeder Connector Kit.

A K466-3, Miller Feeder Connector Kit allows connection of the MAGNUM® & MAGNUM® PRO CURVE to popular Miller wire feeders.

A K466-4, Hobart Feeder Connector Kit allows con- nection of the MAGNUM® & MAGNUM® PRO CURVE to popular Hobart wire feeders.

AK466-5, L-Tec Feeder Connector Kit allows connec- tion of the MAGNUM® & MAGNUM® PRO CURVE to popular L-Tec wire feeders.

For best results when welding mild and alloy steels, it is recommended that Lincoln solid wire electrodes be used for the GMAW process and OS71 Lincoln Outershield® cored electrodes for the gas-shielded FCAW process.

MAGNUM® 200

200 AMPS AT 60% DUTY CYCLE WITH CO2 GAS 150 AMPS AT 60% DUTY CYCLE WITH MIXED GAS

(TAbLE b.1)

Description	Gun		Contact
	Cable		Tips	Gas
Product	Length	Wire Size	Standard	Diffuser	Gas	Insulator	Cable	Gun Tube
Number	(m)	in. (mm)	Duty	Assembly	Nozzle		Liner	60°
K497-3	15 ft.	.025 (0.6)	KP14-25	KP52-23	KP22-50	KP32	KP42-25-15	KP2028-1
	(4.5)	.030 (0.8)	-30
K497-2	10 ft.	.035 (0.9)	KP14-35	KP52	KP22-50	KP32	KP42-4045-15	KP2028-1
	(3.0)	.045 (1.2)	-45
K497-6	12 ft.	.035 (0.9)	KP14-35	KP52	KP22-50	KP32	KP42-4045-15	KP2028-1
	(3.6)	.045 (1.2)	-45
K497-1	15 ft.	.035 (0.9)	KP14-35	KP52	KP22-50	KP32	KP42-4045-15	KP2028-1
	(4.5)	.045 (1.2)	-45

MAGNUM® & MAGNUM® PRO CURVE 200 GUNS