Lincoln Electric IM613-B Feeding Electrode and Brake Adjustment, GAS Guard Regulator Setting

B-8 OPERATION B-8

FEEDING ELECTRODE AND BRAKE ADJUSTMENT

1)Turn the Reel or spool until the free end of the electrode is accessible.

2)While tightly holding the electrode, cut off the bent end and straighten the first 6" (150 mm). Cut off the first 1" (25 mm). (If the electrode is not proper- ly straightened, it may not feed or may jam causing a "birdnest".)

3)Insert the free end through the incoming guide tube.

4)Press the Cold Inch key or the Cold Feed Mode gun trigger and push the electrode into the drive roll.

WARNING

When feeding with the gun trigger, unless “COLD FEED” trigger mode is selected, the electrode and drive mechanism are always “HOT” to work and ground and could remain “HOT” several seconds after the gun trigger is released.

___________________________________________

5)Feed the electrode through the gun.

6)Adjust the brake tension with the thumbscrew on the spindle hub, until the reel turns freely but with little or no overrun when wire feeding is stopped. Do not overtighten.

1)Press end of gun against a solid object that is electrically isolated from the welder output and press the gun trigger for several seconds.

2)If the wire "birdnests", jams, or breaks at the drive roll, the drive roll pressure is too great. Back the pressure setting out turn, run new wire through gun, and repeat above steps.

3)If the only result is drive roll slippage, disengage the gun, pull the gun cable forward about 6" (150 mm). There should be a slight waviness in the exposed wire. If there is no waviness, the pres- sure is too low. Increase the pressure setting turn, reconnect the gun, tighten locking clamp and repeat the above steps.

GAS GUARD REGULATOR SETTING

1)With the gas supply shut off, the Gas Guard regu- lator flow adjusting Key should be set to maximum (full clockwise) which is rated to be 60 SCFH (28 l/min).

2)Adjust gas supply flow rate for a level higher than will be required, then adjust Gas Guard flow adjusting Key counterclockwise to the desired gas flow rate.

DRIVE ROLL PRESSURE SETTING

The Power Feed 11 pressure is factory pre-set to about position “2" as shown on the pressure indicator on the front of the feedplate door. This is an approxi- mate setting.

The optimum drive roll pressure varies with type of wire, surface condition, lubrication, and hardness. Too much pressure could cause “birdnesting”, but too little pressure could cause wire feed slippage with load and/or acceleration. The optimum drive roll set- ting can be determined as follows:

POWER FEED 11