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REMOVAL, INSTALLATION AND TRIMMING INSTRUCTIONS FOR MAGNUM® LINERS
NOTE: The variation in cable lengths prevents the interchangeability of liners. Once a liner has been cut for a particular gun, it should not be installed in anoth- er gun, unless it can meet the liner cut off length requirement. Liners used to feed steel wire are shipped with the jacket of the liner extended the prop- er amount.
a. Remove the gas nozzle and nozzle insulator. Loosen the set screw located in the side of the dif- fuser with 5/64 (2.0 mm) Allen wrench (provided with the gun or connector kit).
b.Remove the gas diffuser from gun.
c.Lay gun and cable out straight on a flat surface. For all K466 except
Loosen set screw located in the brass cable con- nector at the wire feeder end of the cable using the same 5/64 (2.0 mm) Allen wrench. Pull liner out of cable. (REFER TO Figure B.1 IN INSTALLATION FOR EACH)
<OR>
For
Remove the connector cap with the wrench provid- ed. Pull liner out of cable. If the liner is going to be replaced with a different size liner, loosen set screw on the connector cap and remove piece of liner material.
d. For installation and trimming instructions for Magnum® liners see “LINER INSTALLATION” in the INSTALLATION section.
GUN TUBES AND NOZZLES
a.Replace worn contact tips as required.
b.Remove spatter from inside of gas nozzle and from tip after each 10 minutes of arc time or as required.
c.To remove gun tube from gun, loosen
NOTE: Small set screw in the diffuser must be loosened, otherwise liner could be damaged when attempting to remove gun tube.
Pull gun tube out from gun handle. To reinstall, insert the gun tube, push in as far as possible and retighten screws.
GUN CABLES
CABLE CLEANING
Clean cable liner after using approximately 300 pounds (136 kg) of electrode. Remove the cable from the wire feeder and lay it out straight on the floor. Remove the contact tip from the gun. Using an air hose and only partial pressure, gently blow out the cable liner from the gas diffuser end.
CAUTION
Excessive pressure at the start may cause the dirt to form a plug.
Flex the cable over its entire length and again blow out the cable. Repeat this procedure until no further dirt comes out.
CABLE REPAIR
CABLE REPAIR FOR K574 & K1722
MODELS
Magnum® 400 Dual Procedure guns and cables fea- ture the use of repairable cable connectors. If the cable ever gets severely damaged, it may be cut shorter and repaired by the user.
GUN TUBE END CABLE REPAIR FOR K574 AND K1722 (Requires 4
a)Remove the cable liner per previous instructions.
b)Remove the gun tube per previous instructions.
c)Remove the #6 screws from the gun handle, sepa- rate the two halves, and remove the cable from the handle along with the trigger assembly for the K574 guns. Before removing the trigger assembly, carefully note trigger lead wiring as it will be impor- tant to reconnect these properly. For the K1722 also remove the rocker switch.
MAGNUM® 400 DUAL PROCEDURE GUNS