Lincoln Electric IM774 manual Section B, Operation, Controls and Settings

Page 12

Section B

Gas Hose

The gas hose is secured over the barbed gas fitting with a tie wrap. The cabinet end of the gas hose uses our standard gas fitting (1/8” - 27 nps).

Water Hose

If so equipped, one end of the water hose is secured over the barbed water fitting with a tie wrap and the other end is connected to the center fitting on the power block.

Electric Cable

A seven conductor control cable is used on the CobraMAXgun. The gun end of the control cable is secured to the gun with a boot clamp and soldered to the pot assembly, tirgger and water leads. Slack is left in the electric cable as it exits the back of the gun to prevent cable breakage. The cabinet end has a seven pin “W” clocked amphenol connector.

Operation

General

The CobraMAXgun maintains a constant, steady, uniform wire feed speed, regardless of curved or looped wire conduit. The constant push exerted

by the slave motor in the cabinet, combined with the pull of the gun motor, causes the wire to literally float friction-free through the wire conduit. The 24VDC gun motor is controlled by a three and three-quarter (3 3/4) turn potentiometer in the gun handle.

Controls and Settings

Potentiometer

The laterally-positioned potentiometer is located in the lower end of the handle, providing up to 800 ipm with 3 3/4 turns.

Micro Switch

The micro switch assembly consists of the micro switch and leads.

Trigger Sensitivity

The amount of trigger level travel can be shortened for a "quicker" or "more responsive" action.

A more sensitive trigger lever is produced by reducing the gap between the trigger lever and the micro switch lever. By turning-in the trigger sensitivity adjustment screw, it closed the gap between the trigger lever and the micro switch lever.

This will enable the operator to increase the sensitivity of the trigger lever.

Sensitivity Adjustment

With the wire feeder turned on (with or without welding wire loaded), turn the screw in until the micro-switch is activated. Once activated, the tortch and wire feeder motors will begin feeding wire. Retract the screw accordingly until the system is deactivated and adjusted to the operators' liking.

CobraMAX™ Owner's Manual - Page

Image 12
Contents Safety Depends on You GmawPage Table of Contents Declaration of Conformity for European Community CE Products Page Safety For Electrically Page Page Thank You Section a Installation Controls and Settings Section BOperation Drive Roll Installation/Removal Idler Roll Installation and RemovalDrive Roll and Idler Rolls Section C Accessories ConduitsSnake Skins Optional KitsContact Tips Spring Loaded TipsGas Cups Maintenance Periodic Maintenance Section DSection E Troubleshooting Trouble Cause RemedyTroubleshooting Guide Testing The GunTesting the Potentiometer W Clocked Testing the Micro SwitchSection F Appendices Diagrams / Parts List CobraMAX Exploded View CobraMAX Parts List Front Body Assembly Ultra-Flex Air Cooled Lead Assembly Water Cooled Lead Assembly CobraMAX Electrical Page Page Limited Warranty