Lincoln Electric IM931 manual Connection of the LN-25 to the Ranger 250 LPG

A-10 INSTALLATION A-10

Connection of the LN-25 to the RANGER 250 LPG

The LN-25 with or without an internal contactor may be used with the RANGER 250 LPG. See the appropriate connection diagram in Section F.

Note: The LN-25 (K431) Remote Control Module and (K432) Remote Cable are not recommended for use with the RANGER 250 LPG.

1.Shut the welder off.

2.For electrode Positive, connect the electrode cable from the LN-25 to the "+" terminal of the welder and work cable to the "-" terminal of the welder. For elec- trode Negative, connect the electrode cable from the LN-25 to the "-" terminal of the welder and work cable to the "+" terminal of the welder.

3.Attach the single lead from the front of the LN-25 to work using the spring clip at the end of the lead. This is a control lead to supply current to the wire feeder motor; it does not carry welding current.

4.Set the MODE switch to the "CV-WIRE " position.

5.Set the "WELD TERMINALS" switch to "WELD TER-

MINALS ON"

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

7.Set the "IDLE" switch to the "AUTO" position. When not welding, the RANGER 250 LPG engine will be at the low idle speed. If you are using an LN-25 with an internal contactor, the electrode is not energized until the gun trigger is closed.

8.When the gun trigger is closed, the current sensing circuit will cause the RANGER 250 LPG engine to go to the high idle speed, the wire will begin to feed and the welding process started. When welding is stopped, the engine will revert to low idle speed after approximately 12 seconds unless welding is resumed.

Connection of LN-742, K487-25 Spool Gun, and Cobramatic to the RANGER 250 LPG

1.Shut the welder off.

2.Connect per instructions on the appropriate con- nection diagram in Section F.

Connection of Prince Spool Gun to the RANGER 250 LPG

Connection of the Prince XL Spool Gun requires the use of the K1849-1 Adapter Module.

1.Shut the Welder off.

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

3.Connect the Control Cable of the Spool Gun to the Adapter Module and connect the Control Cable of the Adapter Module to the Welder.

4.Connect the Gas Hose.

5.Set the MODE switch to the "CV-WIRE " position.

6.Set the "WELD TERMINALS" switch to "WELD

TERMINALS ON"

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

8.Set the "IDLE" switch to the "High" position.

RANGER 250 LPG