ACCESSORIES
Routine Maintenance of Wire Feed Unit
WARNING
ELECTRIC SHOCK can kill.
•Do not touch electrically live parts such as output terminals or internal wiring.
•When inching with gun trigger, electrode and drive mechanism are “hot” to work and ground.
Wire Reel Mounting - 50 (22.7kg) and 60lb (27.2kg) Coils
To prolong the life of the reel shaft, periodically coat it with a thin layer of grease.
No maintenance of the
•Turn OFF welding power source before installing or changing drive roll and/or guide tubes.
•Welding power source must be connected to system ground per the National Electrical Code or any applicable local codes.
•Only qualified personnel should do main- tenance or troubleshooting work.
Wire Reel Mounting -
No routine maintenance required. Do not lubricate 2” (51mm) spindle.
Avoiding Wire Feeding Problems
Observe all additional Safety Guidelines detailed throughout this manual.
Drive Rolls and Guide Tubes
After feeding every coil of wire, inspect the drive roll section. Clean it as necessary. Do not use a solvent for cleaning the idle roll because it may wash the lubri- cant out of the bearing. The driver roll and guide tubes are stamped with the wire sizes they will feed. If a wire size other than that stamped on the roll(s) is to be used, the roll(s) and guide tubes must be changed.
The drive rolls for .045” (1.2mm) and .052” (1.3mm) cored electrode and 1/16” (1.6mm), .068 (1.7mm), 5/64” (2.0mm), and 3/32” (2.4mm) electrode have a double set of teeth so they can be reversed for addi- tional life. Between the two knurled rolls (except 1/16” (1.6mm)) and smaller roll(s) is a shim washer which limits the damage to the electrode if wire feeding prob- lems occur. Drive rolls for .023” (0.6mm) through .052” (1.3mm) solid electrodes have no teeth.
See section on Wire Feed Drive Roll and Guide Tube Kits for roll changing instructions.
Wire feeding problems can be avoided by observing the following gun handling procedures:
a)Do not kink or pull cable around sharp corners.
b)Keep the electrode cable as straight as possible when welding or loading electrode through cable.
c)Do not allow dolly wheels or trucks to run over cables.
d)Keep cable clean by following maintenance instruc- tions.
e)Use only clean,
f)Replace contact tip when the arc starts to become unstable or the contact tip end is fused or deformed.
g)Do not use excessive wire spindle brake settings.
Periodic Maintenance of Wire Drive Unit
Wire Drive Motor and Gearbox
Every year inspect the gearbox and coat the gear teeth with a
Every six months check the motor brushes. Replace them if they are less than 1/4” long.
