Lincoln Electric K1780-1 Feed Ing Electrode and Brake Adjustment, Drive Roll Pressure Setting

A-8				INSTALLATION		A-8
Feed			ing Electrode and Brake Adjustment		3. If the only result is drive roll slippage, disengage the
1.		Turn the Reel or spool until the free end of the elec-			gun, pull the gun cable forward about 6" (150 mm).
		trode is accessible. If using a drum or large reel,			There should be a slight waviness in the exposed
		supply the electrode to the PF-10/R with an elec-			wire. If there is no waviness, the pressure is too
		trode conduit. Minimize the number of bends in the			low. Increase the pressure setting 3 turns, recon-
2.		conduit and the distance the electrode must travel.			nect the gun, tighten locking clamp and repeat the
		While tightly holding the electrode, cut off the bent			above steps.
		end and straighten the first 6" (150 mm). Cut off the
		first 1" (25 mm). (If the electrode is not properly
		straightened, it may not feed or may jam causing a
3.		"bird nest".)
		Insert the free end through the incoming guide tube.
4.		Activate the Cold Inch mode until the the drive rolls
		grab the electrode.WARNING
When feeding with the 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 over tighten.
Drive Roll Pressure Setting

The Power Feed 10/R drive roll pressures are factory pre-set to about position “2” as shown on the pressure indicator on the front of the feed plate door. This is an approximate setting.

The optimum drive roll pressure varies with type of wire, surface condition, lubrication, and hardness. Too much pressure could cause “bird nesting,” 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:

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

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

POWER FEED 10 / R