Lincoln Electric K497 CONTACT TIP AND GAS NOzzLE INSTAL LATION, Connection To Feeder, FIGURE A.2

A-3	INSTALLATION	A-3
	FIGURE A.2

COLLAR ASSEMBLY FEEDER END CABLE HANDLE

SET SCREW

GAS VENTED HOLE

LINER ASSEMBLY (LINER BUSHING TO BE SEATED TIGHT AGAINST BRASS CABLE CONNECTOR)

GUN HANDLE

GUN TUBE ASSEMBLY

9 / 16” (14.3mm)

LINER TRIM

LENGTH

INSULATOR

DIFFUSER

CONTACT TIP

NOZZLE ASSEMBLY

CONTACT TIP AND GAS NOzzLE INSTAL-

LATION

a.Choose the correct size contact tip for the elec- trode being used (wire size is stenciled on the side of the contact tip) and screw it snugly into the gas diffuser.

b.Be sure the nozzle insulator is fully screwed onto the gas diffuser and does not block the gas holes in the diffuser.

c.Slip the appropriate gas nozzle onto the nozzle insulator. Either a .62 inch (15.9 mm) or .50” (12.7 mm I.D. slip-on gas nozzle may be used and should be selected based on the welding application.

Choose the gas nozzle as appropriate for the GMAW process to be used. Typically, the contact tip end should be flush to .12 inch (3.1 mm) extended for the short-circuiting transfer process and .12 inch (3.1 mm) recessed for spray transfer. For the Outershield (FCAW) process, 1/4 inch (6.3 mm) recess is recommended.

SAFETY PRECAUTIONS

WARNING

ELECTRIC SHOCK CAN KILL.

•Do not touch electrically live parts such as output terminals or inter- nal wiring.

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CONNECTION TO FEEDER

Connection to Lincoln Feeders

Gun cable assemblies which were assembled with a K466-1 Connector Kit will connect easily to any Lincoln LN-7, LN-8, LN-9, SP200 or LN-25 feeder.

a.Check that the drive roll(s) and feeder guide tubes are appropriate for the electrode size being used.

b.Fully push the brass connector end of the gun cable into the conductor block on the outgoing side of the feeder wire drive. Secure the cable using the hand screw or set screw in the conductor block.

c.Insert the control cable plug from the feeder trigger circuit into the mating socket on the feeder end cable handle (See K466-1connector kit installation to gun cable in this section).

d.Slide the free end of the flexible hose onto the barbed gas fitting on the front of the Lincoln feeder (See K466-1 connector kit installation to gun cable in this section) Move the corresponding tubing clamp down near the end of the tube to assure a good gas seal

MAGNUM® & MAGNUM® PRO CURVE 200 GUNS