Lincoln Electric LN-25 User Manual download pdf (Page 11)

LN-25

A-4

INSTALLATION

Install the barbed fitting and union nut to the

8-18

female inert gas fitting on the front panel of the

LN-25 case. Connect the

16” I.D. gas hose from the

gun cable to the barbed fitting.

When the gun is to be removed, this fitting can be

easily detached by loosening the union nut.

WELD CABLE CONNECTION

The size of the electrode cable and work cable must

be sufficient for the maximum weld current and total

cable length to be used. Refer to table A.1.

TABLE A.1

Total Cable Length

Weld Current

60% Duty Cycle 50’-100’ 100’-150’ 150’-200’ 200’-250’

200Amps 2 AWG 2 AWG 1 AWG 1/0

300Amps 1 AWG 1 AWG 1/0 2/0

400Amps 2/0 2/0 3/0 3/0

500Amps 2/0 3/0 3/0 4/0

ELECTRODE CABLE CONNECTION

Route the electrode cable through the oval hole in

the lower portion of the LN-25 rear panel. Connect

the electrode cable to the LN-25 input stud using the

2” nut provided.

Secure the cable with the strain relief clamp provided.

All units are supplied with an optional pigtail for

customers that prefer to make a taped and bolted

connection externally.

WORK CABLE CONNECTION

Connect a work lead of sufficient size between

the proper output stud on the power source and

the work. Be sure the connection to the work

makes tight metal-to-metal electrical contact.

Poor work lead connections can result in poor

welding performance.

WIRE FEED DRIVE ROLL AND

GUIDE TUBE KITS

Turn off power source before installing or changing

drive roll and/or guide tubes.

NOTE: The maximum wire sizes the LN-25 will

satisfactorily feed are

64” cored and

16” solid

electrodes.

The electrode sizes that can be fed with each roll and

guide tube are stencilled

(1)

on each part. Check the kit

for proper components. See the instructions, included

with the drive roll kit, to install these parts on new

machines or replace them on used machines. Refer

to table A.2.

TABLE A.2

Kit Instructions

Steel Wire Sizes:

.068-

64 Cored KP653-

32 L9932

16 (.062) Cored or Solid -

16

Steel

(Can also be used for .052)

.045 and .052 Solid Steel -.052

.045 and .052 Cored -.052C

.035 Solid Steel -.035S

.035 Cored -.035C

.030 Solid Steel -.030S

.025 Solid Steel -.025S

Aluminum Wire Sizes:

16 KP654-

16A L9932

64 -

64A

.035 -.035A

(1)

Drive rolls for only cored electrode sizes are stencilled with a

“C” suffix to the wire sizes.

Drive rolls for only solid electrode sizes are stencilled with an

“S” suffix to the wire sizes.

Drive rolls for aluminum wire sizes are stencilled with an “A” suffix

to the wire sizes.

WARNING

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Lincoln Electric LN-25 User Manual Page 11

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