Lincoln Electric IM548 DESCRIPTION, INSTALLATION, OPERATION, CAUTION WARNING

FLUX CORED FUME GUN

DESCRIPTION

The K206 is a Flux-Cored Fume Gun rated 350

amperes 60% duty cycle1. It was developed to remove

smoke emitted at the arc when welding with

Innershield electrodes. The gun can use .062", .068",

.072(1.8mm), 5/64"(2.0mm) and 3/32"(2.4mm) elec-

trode at 3/4"(19mm), 1"(25.4mm), 1-1/2"(38mm),

2"(51mm) and 2-3/4"(70mm) Contact Tip To Work

Distance(CTWD). The K179 or K184 X-Tractor vacu-

um source will provide a suitable vacuum source to

remove the smoke. The K206 gun will fit any Lincoln

Wire feeder that can use a K126 gun. The wire feed

cable length is 15ft.(4.5m), and 15ft(4.5m) of exhaust

hoses are provided.

The K206 gun is shipped ready to weld 3/32"(2.4mm)

electrode at 2-3/4"(70mm) (CTWD). The gun can be

converted for other electrical stickouts by changing to

the appropriate extension guide provided. The

(CTWD) is obtained when welding with the visible

stickout shown in the table below. The gun can be

used with other electrode sizes by using the appropri-

ate contact tip. The following tables show the parts

needed for various wire sizes and stickouts.

Two special extension guides have been developed

principally for use with NR-211MP. The first, M13800,

provides an electrical stickout of 3/4"(19mm) to

1"(25.4) and is so designed that stickouts less than

5/8"(16mm) cannot be obtained. The second,

S168693is suitable for electrical stickouts between

1/2"(12.7) and 1"(25.4). The guides have an open

design (no spatter shield) which reduces the duty

cycle to 50%. Because of the open design, the occur-

rence of spatter bridging from the electrode to the

guide is reduced. However, more spatter is drawn

into the gun requiring more frequent cleaning of the

housing.

1The Flux-Cored Fume Gun can also be used at 400 amperes, 30% duty

cycle.

2Low cost tip available as parts order. Wear life may be 1/3 to 1/5 that of

standard that of standard contact tip. Main application will be where cus-

tomer has high replacement due to arcing tip to work. Tip can be identified

by a vee groove on O.D.

3Also used with NR-207/207H and NR-208/208H.

INSTALLATION

Connect the wire feed cable and control cable to the

wire feeder by inserting the male end of the wire feed

cable into the brass block on the front of the wire feed-

er and tightening the set screw. Keep this connection

clean and bright. Insert the control cable polarized

plug into the receptacle on the wire feeder. (Note:

The wire feeder must have correct drive rolls and ten-

sion setting for the electrode used.) Connect the hose

adapter to any 1-3/4"(45mm) exhaust hose. Lincoln

Electric has 1-3/4"(45mm) hoses for both regular duty

(PVC flexhose S19947- ) and heavy duty (Reinforced

rubber S14927-8) applications. Then connect the

hose to an X-Tractor Vacuum source.

These units will provide enough vacuum to remove

smoke generated at the welding arc. A vacuum

source rated 30 CFM at 55”(1397mm) of water can be

used in place of the Lincoln vacuum units.

Vacuum must be on when welding with the gun.

Without air flow, the gun will become overheated and

extension guide and nozzle will deteriorate rapidly.

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

Some welding sparks and spatter may be picked up.

Check that sparks will not damage non-Lincoln vacu-

um units or create fire hazards.

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

OPERATION

The gun is shipped ready to feed 3/32"(2.4mm) elec-

trode at 2-3/4"(70mm) electrical stickout. Change the

extension guide if a different Contact Tip To Work

Distance (CTWD) is required. The extension guides

are simply screwed on the end of the intake housing.

Refer to the table for proper extension guide and visi-

ble stickout needed to obtain the required electrical

stickout. Each stickout guide can be used for any

electrode size. The correct contact tip must be used

for the appropriate wire size.

NOTE: For optimum smoke pickup, use drag angles

of 15° from the vertical, or less. As the drag

angle increases over this figure, smoke pick-

up will be less and less effective.

Wire

Size

3/32”(2.4mm)

5/64”(2.0mm)

.068”(1.7mm) & .072”(1.8mm)

.062(1.6mm)

(CTWD)

2-3/4”(70mm)

2”(51mm)

1-1/2”(38mm)

1”(25.4mm)

3/4”(19mm)

1/2” to 1”(13 to 25.4mm)

Guide

T14014-3

T14014-4

T14014-2

T14014-1

S16869

Visible

Stickout

1-3/8”(35mm)

1”(25.4)

3/4”(19mm)

1/2” to 1”

(13 to 25.4mm)

Furnished

with K206

Yes

Contact

Tip

T14050-3/32

T14050-5/64

T14726-5/642

T14050-.072

T14050-1/16

Parts Furnished

With K206

Yes

CAUTIONWARNING