Lincoln Electric IM910 manual Electrode Connection, Work Connection, Power Source Connection

A-3 INSTALLATION A-3

ELECTRODE CONNECTION

Route the electrode cable through the strain relief in the rear of the case. Connect the electrode cable to the LN-15 connection block using the mounting hard- ware provided. Secure the cable by tightening the strain relief.

All domestic models are supplied with an optional pig- tail for customers that prefer to make a taped and bolt- ed connection externally. CE models have a male twist connector for the electrode connection.

WORK 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 connec- tions can result in poor welding performance.

POWER SOURCE CONNECTION

The LN-15 can be used with any DC welding power source. A constant voltage power source is recom- mend; however, the LN-15 can also be used with a constant current power source as long as the open circuit voltage is less than 110VDC.

CAUTION

To prevent possible damage to the LN-15, do not connect the LN-15 to non-Lincoln TIG or square wave power sources. TIG high frequency should never be applied to the LN-15.

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ENGINE DRIVE POWER SOURCE CONNECTION

The LN-15 sends a control signal to the engine drive and the electrode is not energized until the gun trigger is closed. When the gun trigger is closed the wire will begin to feed and the welding process is started.

1.Shut the welder off.

2.For electrode Positive polarity welding, connect the electrode cable to the "+" terminal of the welder and work cable to the "-" terminal of the welder. For Electrode Negative welding, connect the electrode cable to the "-" terminal of the welder and work cable to the "+" terminal of the welder.

3.Set the MODE switch on the engine drive to CV- WIRE.

4.Set the WELD TERMINALS switch to WELD TER-

MINALS OFF.

5.Set the WIRE FEEDER VOLTMETER switch to either "+" or "-" as required by the electrode polarity being used.

6.Set the ARC CONTROL knob to "0" initially and adjust to suit.

7.Set the IDLE switch to the AUTO position . Important: Some older engine drives may the IDLE switch to be in the HIGH position for proper LN-15 operation.

LN-15 CONTROL CABLE MODEL (CE)