Lincoln Electric IM620-B manual Weld Cable Connection, Wire Feed Drive Roll and Guide Tube Kits

A-4 INSTALLATION A-4

Install the barbed fitting and union nut to the 5⁄8-18 female inert gas fitting on the front panel of the LN-25 case. Connect the 3⁄16” 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

Weld Current		Total Cable Length
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 1⁄2” 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

WARNING

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 5⁄64” cored and 1⁄16” 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:
.068-5⁄64Cored		KP653-3⁄32	L9932
1⁄16 (.062) Cored or Solid		-1⁄16
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:		KP654-1⁄16A
1⁄16			L9932
3⁄64		-3⁄64A
.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.

LN-25