Lincoln Electric IM901-A manual Pressure ARM Adjustment, Loading Spools of Wire, GUN Connection

A-5 INSTALLATION A-5

PRESSURE ARM ADJUSTMENT

1.Squeeze the release bar on the retaining collar and remove it from the spindle.

WARNING

ELECTRIC SHOCK can kill.

•Turn the input power OFF at the weld- ing power source before installation or changing drive rolls and/or guides.

•Do not touch electrically live parts.

•When inching with the gun trigger, electrode and drive mechanism are "hot" to work and ground and could remain energized several sec- onds after the gun trigger is released.

•Do not operate with covers, panels or guards removed or open.

•Only qualified personnel should perform mainte- nance work.

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The pressure arm controls the amount of force the drive rolls exert on the wire. Proper adjustment of the pressure arm gives the best welding performance.

Set the pressure arm as follows:
(See Figure A.3)
Aluminum wires	between 1 and 3
Cored wires	between 3 and 4
Steel, Stainless wires	between 4 and 6

FIGURE A.3

	Al	ALUMINUM WIRES
	Fe, CrNi		CORED WIRES
6	Fe, CrNi		STEEL, STAINLESS WIRES

LOADING SPOOLS OF WIRE

WARNING

•Keep hands, hair, clothing and tools away from rotating equipment.

•Do not wear gloves when threading wire or changing wire spool.

•Only qualified personnel should install, use or service this equipment.

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Loading 10 to 15 lb. (4.5 – 6.8kg) Spools.

A K468 spindle adapter is required for loading 2" (51mm) wide spools on 2" (51mm) spindles. Use a K468 spindle adapter for loading 2-1/2" (64mm) wide spools.

2.Place the spindle adapter on the spindle, aligning the spindle brake pin with the hole in the adapter.

3.Place the spool on the spindle and align the adapter brake tab with one of the holes in the back side of the spool. An indicator mark on the end of the spindle shows the orientation of the brake tab. Be certain the wire feeds off of the spool in the proper direction.

4.Re-install the retaining collar. Make sure that the release bar snaps out and that the retaining collar fully engages the groove on the spindle.

GUN CONNECTION

WARNING

ELECTRIC SHOCK can kill.

•Turn the input power OFF at the weld- ing power source before installation or changing drive rolls and/or guides.

•Do not touch electrically live parts.

•When inching with the gun trigger, electrode and drive mechanism are "hot" to work and ground and could remain energized several sec- onds after the gun trigger is released.

•Do not operate with covers, panels or guards removed or open.

•Only qualified personnel should perform mainte- nance work.

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The LN-25™ PRO ACROSS THE ARC MODEL comes with a K1500-2 gun adapter installed. (See Figure A.4)

To install a gun,

1.Turn power OFF.

2.Remove the thumb screw.

3.Push the gun the completely into the gun bushing.

4.Secure the gun in place with the thumb screw.

5.Connect the trigger cable from the gun to the trigger connector on the front of the feeder.

Note: Not all gun bushings require the use of the thumb screw.

FIGURE A.4

THUMB

SCREW

GUN

LN-25™ PRO ACROSS THE ARC MODEL