MAINTENANCE |
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 are shipped with the jacket of the liner extended the proper amount.
a. Remove the gas nozzle.
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.
b.Remove the gas diffuser and insulator 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 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 MAG- NUM® liners see “LINER INSTALLATION” in 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 3 socket- head clamping screws in handle with an Allen wrench. Remove a knurled nut at the base of the handle. Remove gas nozzle diffuser and nozzle insulator, on the threaded gun tube from the cable assembly.
D.To reinstall, reverse procedure.
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 (All
The MAGNUM® PRO 250, 350, 450 & 550 Amp guns feature the use of repairable cable connectors. If the cable ever gets severely damaged. it may be cut short- er and repaired by the user. Repair cables as follows:
gun tube enD rePAir (Requires 2
a. Remove the cable liner per Removal, Installation and Trimming Instructions.
b.Remove the gun tube per Gun Tubes and Nozzles Section.
c.Remove three screws from the gun handle, remove the knurled nut separate the two halves, and remove the cable from the handle along with the trigger assembly.
d.Remove gun tube connector from cable by unscrewing connector nut from gun tube connector. If the cable inner tube is difficult to remove from the connector assembly, carefully slit it lengthwise with a knife up to the copper connector.
e.Uncouple the strain relief by pushing its outer hous- ing toward the middle of the cable. Move the strain relief and the cable boot toward the middle of the cable, past the damaged section.
f.Cut off the damaged section of cable and strip off
MAGNUM® PRO 250, 350, 450 & 550 AMP
