Lincoln Electric FLUX-CORED FUME GUN K289 - Manuel (Page 7)

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FLUX CORED FUME GUN
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DESCRIPTION
The K289 is a Flux-Cored Fume Gun rated 500
amperes 60% duty cycle. It was developed to remove
smoke emitted at the arc when welding with
Innershield electrodes. The gun can use
.068"(1.7mm), .072(1.8mm), 5/64"(2.0mm),
3/32"(2.4mm), 7/64”(2.8mm) and .120”(3.1mm) elec-
trode at 3/4"(19.1mm) to 1-1/4"(31.8mm), 1-
1/2"(38.1mm), 2-3/4"(69.9mm) and 3-3/4"(95.3mm)
Contact Tip to Work Distance(CTWD). The K179 or
K184 X-Tractor vacuum source will provide a suitable
vacuum source to remove the smoke. The K289 gun
will fit any Lincoln Wire feeder that can use a K115
gun. The wire feed cable length is 15ft.(4.6m), and
15ft(4.6m). of exhaust hose are provided.
The K289 guns for 3/32”(2.4mm) and .120”(3.1mm)
are shipped ready to weld the specified electrode size
at 2-3/4"(69.9mm) (CTWD). The contact tip must be
changed to KP2103-6B1 to use 7/64”(2.8mm) elec-
trode in the .120”(3.1mm) guns. Change the extension
guide for the (CTWD) required. Each extension can
be used for any electrode size. The 5/64”(2.0mm) gun
is equipped for 3/4”(19.1mm) (CTWD). To use .072”
(1.8mm) or .068”(1.7mm) electrode in the
5/64”(2.0mm) guns, the contact tip must be changed
to a KP2103-1B1.
Each (CTWD) requires a different extension guide as
shown in the following table:
* (CTWD) is the same as the visible stickout when using T14134-4 or
KP1994-1 extension guides.
Note: T14134-4 is not recommended for deep groove
butt welds.
KP1931-1 extension guide has been developed
principally for use with 5/64”(2.0mm) NR-211MP.
The guide is an open design which reduces the
occurrence of spatter bridging from electrode to
guide, but more spatter is drawn into the gun
requiring more frequent cleaning of the housing.
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"(45 mm) exhaust hose. Lincoln
Electric has 1-3/4"(45 mm) hoses for both regular duty
(PVC flexhose S19947- ) and heavy duty (Reinforced
rubber S14927-8) applications. Then connect the
hose to a K179 or K184 X-Tractor Vacuum source.
These units will provide enough vacuum to remove
smoke generated at the welding arc. A vacuum
source rated 35 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
the extension guide, intake housing and nozzle will
deteriorate rapidly.
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Some welding sparks and spatter may be picked up.
Check that sparks will not damage non-Lincoln vacu-
um units or create fire hazards.
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OPERATION
The K289 guns for 3/32”(2.4mm) and .120”(3.1mm)
are shipped ready to weld the specified electrode size
at 2-3/4"(70mm) (CTWD). The contact tip must be
changed to KP2103-6B1 to use 7/64”(2.8mm) elec-
trode in the .120”(3.1mm) guns. The 5/64”(2.0mm)
gun is equipped for 3/4”(19.1mm) electrical stickout.
To use .072”(1.8mm) or .068”(1.7mm) electrode in the
5/64”(2.0mm) guns, the contact tip must be changed
to a KP2103-1B1. Change the extension guide if a dif-
ferent (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 (CTWD).
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 fig-
ure, smoke pickup will be less and less effective.
(CTWD)
3/4”(19mm)-1”(25.4)
3/4”(19mm) to 1-1/4”(32mm)
1-1/2”(38mm)
2-3/4”(70mm)
3-3/4”(95mm)
Extension
Guide
KP1931-1
T14134-4
KP2102-1
KP2102-2
T14134-3
Parts Furnished
with Gun
5/64(2.0mm) gun
No
3/32(2.4mm) & .120(3.1mm) gun
3/32(2.4mm) & .120(3.1mm) gun
No
Visible
Stickout
3/4”(19.1mm)*
3/4”(19.1mm)*
1”(25.4)
1-3/8”(35mm)
1-3/8”(35mm)
CAUTION
WARNING