Weld Cable Connections, Work Connection | Lincoln Electric SVM166-A

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A-4

INSTALLATION

A-4

WELD CABLE CONNECTIONS

CAUTION

WARNING

To prevent possible damage to the LN-15, do not

ELECTRIC SHOCK CAN KILL.

connect the LN-15 to non-Lincoln TIG or square

• Only a qualified electrician should

wave power sources. TIG high frequency should

connect the electrode leads to the

never be applied to the LN-15.

LN-15. Connections should be

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made in accordance with all local

ENGINE DRIVE POWER SOURCE

and

national

electrical

codes.

CONNECTION

Failure to do so may result in bodi-

ly injury or death.

The LN-15 has an internal contactor and the electrode

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is not energized until the gun trigger is closed. When

The size of the electrode cable and work cable must be

the gun trigger is closed the wire will begin to feed and

sufficient for the maximum weld current and total cable

the welding process is started.

length used.

To avoid interference problems with other equipment

1. Shut the welder off.

and to achieve the best possible operation, route all

2. For electrode Positive polarity welding, connect the

cables directly to the work or wire feeder. Avoid exces-

electrode cable to the "+" terminal of the welder and

sive lengths and do not coil excess cable. Be sure the

work cable to the "-" terminal of the welder. For

connection to

the

work

makes

tight metal-to-metal

Electrode Negative welding, connect the electrode

electrical contact. (See Table A.1)

cable to the "-" terminal of the welder and work

TABLE A.1

cable to the "+" terminal of the welder.

3. Attach the work clip lead from the front of the LN-15

Weld Current

Total Cable Length

60% Duty

(electrode cable + work cable)

to work using the spring clip at the end of the lead.

Cycle

50 - 100'

100 - 150'

150 - 200'

200 - 250'

This is a control lead to supply current to the wire

(15-30 m)

(30 - 46m)

(46 - 61m)

(61m - 76m)

feeder motor; it does not carry welding current.

200 Amps

2 AWG

1 AWG

1/0

300 Amps

1 AWG

1/0

2/0

4. Set the MODE switch on the engine drive to CV-

400 Amps

2/0

3/0

WIRE.

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ELECTRODE CONNECTION

Route the electrode cable through the strain relief in the rear of the case. Connect the electrode cable to the LN-15 input stud using the mounting hardware provid- ed. Secure the cable by tightening the strain relief.

All domestic models are supplied with pigtail for cus- tomers that prefer to make a taped and bolted connec- tion 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 connections can result in poor welding performance.

5.Set the WELD TERMINALS switch to WELD TER-

MINALS ON.

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

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

8.Set the IDLE switch to the AUTO position. Important: Some older engine drives may require the IDLE switch to be in the HIGH position for prop- er LN-15 operation.

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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 cir- cuit voltage is less than 110VDC.

LN-15