Engine Operation, Welding Controls | Lincoln Electric SVM150-A

B-5

OPERATION

Return to Section TOC

Return to Master TOC

WELDING CONTROLS

7.OUTPUT CONTROL: The OUTPUT dial provides continuous control of the welding current or weld- ing voltage depending on the selected welding mode. This control is not active in the CC-STICK, PIPE, and CV-WIRE modes when a remote con- trol or wire feeder with remote control is connect- ed to either the 6-pin or 14-pin Amphenol.

8.WELD MODE SELECTOR SWITCH: This switch provides four selectable welding modes:

•CV-WIRE

•PIPE

•CC-STICK

•TOUCH START TIG

9.ARC CONTROL: The ARC CONTROL WIRE/ STICK dial is active in the CV-WIRE and CC- STICK modes, and has different functions in these modes. This control is not active in the TIG and PIPE modes.

CC-STICK mode: In this mode, the ARC CON- TROL sets the short circuit current during stick welding (arc-force). Increasing the number from -10 to +10 increases the short circuit current and prevents sticking of the electrode to the plate while welding. This can also increase spatter. It is recommended that the ARC CONTROL be set to the minimum number without electrode stick- ing. Start with a setting at 0.

CV-WIRE mode: In this mode, turning the ARC CONTROL clockwise from -10 (soft) to +10 (crisp) changes the arc from soft and washed-in to crisp and narrow. It acts as an inductance control. The proper setting depends on the procedure and operator preference. Start with a setting at 0.

10.14-PIN AMPHENOL: For attaching wire feeder control cables to the Ranger 250. Includes con- tactor closure circuit, auto-sensing remote control circuit, and 120V and 42V power. The remote control circuit operates the same as the 6-pin Amphenol. See below.

11.6-PIN AMPHENOL: For attaching optional remote control equipment. When in the CC- STICK, PIPE, and CV-WIRE modes and when a remote control is connected to the Amphenol, the auto-sensing circuit in the Ranger 250 automati- cally switches the OUTPUT control from control at the welder to remote control.

When using the TOUCH START TIG mode, the OUTPUT control on the front of the Ranger 250 sets the maximum current range.

12.WELD TERMINALS CONTROL SWITCH: In the WELD TERMINALS ON position, the weld output is electrically hot all the time. In the REMOTELY CONTROLLED position, the weld output is con- trolled by a wire feeder or amptrol device, and is electrically off until a remote switch is depressed.

13.WIRE FEEDER VOLTMETER SWITCH: Matches the polarity of the wire feeder voltmeter to the polarity of the electrode.

ENGINE OPERATION

WARNING

DO NOT RUN THE ENGINE AT EXCESSIVE SPEEDS. The maximum allowable high idle speed for the Ranger 250 is 3750 RPM, no load. Do NOT adjust the governor screw on the engine. Severe personal injury and damage to the machine can result if it is operated at speeds above the maximum rated speed.

Read and understand all safety instructions included in the engine operator’s manual that is shipped with your Ranger 250.

BEFORE STARTING THE ENGINE

Check and fill the engine oil level:

1.Be sure the machine is on a level surface.

2.Open top engine door and remove the engine oil dipstick and wipe it with a clean cloth. Reinsert the dipstick and check the level on the dipstick.

3.Add oil (if necessary) to bring the level up to the full mark. Do not overfill. Close engine door.

4.See the Maintenance section for specific oil rec- ommendations.

Check and fill the engine fuel tank:

WARNING

GASOLINE can cause fire or explosion.

• Stop engine when fueling.

•Do not smoke when fueling.

•Do not overfill tank.

•Avoid contact with skin or breathing of vapor.

•Keep sparks and flame away from tank.

Lincoln Electric SVM150-A Engine Operation, Welding Controls, Before Starting the Engine

Models: SVM150-A