DH-10 Heads & Controls OPERATOR'S MANUAL ... - Lincoln Electric

A-5Electrode RoutingThe electrode supply may be either from reels, Readi-Reels, spools, or bulk packaged drums or reels.Observe the following precautions:INSTALLATIONA-5a) Loosen the clamping collar screw using a3/16" Allen wrench. The clamping collarscrew is accessed from the bottom of thefeedplate. It is the screw which is perpendicularto the feeding direction.a) The electrode must be routed to the wire drive unitso that the bends in the wire are at a minimum,and also that the force required to pull the wirefrom the reel into the wire drive unit is kept at aminimum.b) The electrode is "hot" when the gun trigger ispressed and must be insulated from the boom andstructure.c) If more than one wire feed unit shares the sameboom and are not sharing the some power sourceoutput stud, their wire and reels must be insulatedfrom each other as well as insulated from theirmounting structure.WIRE DRIVE SPEED RANGESELECTIONThe rated speed and wire size range for each wiredrive head is shown in the SPECIFICATIONS in thefront of this section.Control Speed Range SettingThe speed range is set up to match each wire feedhead connected to the DH-10 control by properly settingthe switch (S2) code on the control board insidethe control box. See OPERATION “Setting the DIPSwitches” for setting instructions.10-Series (DH) Wire Drive Ratio SelectionThe Double Head type drives include two externalgear sizes; a 1"(25.4mm) dia. gear and a 1-1/2"(38.1mm) dia. gear. The smaller gear provides thelow speed range ratio, and the larger gear providesthe high speed range ratio per the SPECIFICATIONSin the front of this section.The following procedure is for changing ratio of theDH drive:1) Pull open the Pressure Door.2) Remove the Phillips head screw retaining the piniongear to be changed and remove the gear. If thegear is not easily accessible or difficult to remove,remove the feedplate from the gearbox. To removefeedplate:b) Loosen the retaining screw, which is alsoaccessed from bottom of feeder, using a3/16" Allen wrench. Continue to loosenthe screw until the feedplate can be easilypulled off of the wire feeder.3) Loosen, but do not remove, the screw on the lowerright face of the feedplate with a 3/16" Allenwrench.4) Remove the screw on the left face of the feedplate.If changing from high speed (larger gear) to lowspeed (smaller gear), line the lower hole on the leftface of the feedplate with the threads on theclamping collar. Line the upper hole with thethreads to install larger gear for high speed feeder.If feedplate does not rotate to allow holes to lineup, further loosen the screw on right face of feedplate.5) Install gear onto output shaft and secure with flatwasher, lock washer, and Phillips head screwwhich were previously removed.6) Tighten the screw on lower right face of feedplate.7) Install gear onto output shaft and secure with flatwasher, lock washer, and Phillips head screwwhich were previously removed.8) Re-attach feedplate to wire feeder if removed inStep 2.9) Feedplate will be rotated out-of-position due to thegear change. To re-adjust angle of feedplate:a) Loosen the clamping collar using a 3/16"Allen wrench. The clamping collar screw isaccessed from the bottom of the feedplate.It is the screw which is perpendicular to thefeeding direction.b) Rotate feedplate to the desired angle andtighten clamping collar screw.10) Make sure to properly set the switch (S2) code onthe control board inside the control box for thenew gear size installed. See OPERATION“Setting the DIP Switches” for setting instructions.DH-10