MAINTENANCE | ||
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MAINTENANCE
Safety Precautions
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 and could remain energized several seconds after the gun trigger is released.
•Turn OFF input power at welding power source before installation 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 perform maintenance work.
Observe all additional Safety Guidelines detailed throughout this manual.
Routine Maintenance
Drive Rolls and Guide Tubes
After feeding every coil of wire, inspect the drive roll section. Clean it as necessary. The drive rolls and Inner Wire Guides 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 Inner Wire Guides must be changed.
All drive rolls have two identical grooves. The rolls may be flipped over to use the other groove.
See “Procedure to Install Drive Rolls and Wire Guides” in the INSTALLATION section for roll chang- ing instructions.
Wire Reel Mounting -
No routine maintenance required.
Avoiding Wire Feeding Problems
Wire feeding problems can be avoided by observing the following gun handling and feeder set up proce- dures:
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 instructions.
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.
h)Use proper drive rolls, wire guides and drive roll pressure settings.
Periodic Maintenance
Wire Drive Motor and Gearbox
Every year inspect the gearbox and coat the gear teeth with grease. Do not use graphite grease.
Gun and Cable Maintenance
See appropriate Operator’s Manual.
Procedure for Removing Feedplate from Wire Feeder
1.Using a 3/16" Hex Key Wrench remove the two screws that secure the Feedplate to the Interface Plate. These screws are located just below and to the right and left of the lower drive gears.
2.Disconnect the Electrode Lead from the Feedplate.
3.Swing the rear of the Feedplate out towards the front of the machine which will allow it to be pulled back and out of the machine.
4.Remove the gas hose and disconnect the gun leads.