ESAB MobileFeed 300 AVS, Instruction Manual

Page: 34 / 52

34
4.3 trouBleshootIng
If welding equipment does not work properly, inspect as
follows:
A. With all power controls ON and other operating
controls at required settings, visually check all power
cables and connections for evidence of overheating
or sparking.
to avoid shock, do not touch electrode wire or parts in
contact with it, or uninsulated cable or connections.
B. Check all gas hoses and connections, flowmeters, and
regulators for possible sources of leakage, breakdown,
or intermittent failure.
C. Isolate trouble to one part of the welding installation:
primary power supply, power source, wire feeder, or
wire guide train (casing, drive rolls, liners, and con-
tact tip). If this inspection indicates trouble in the
wire feeder, refer to the following pages; Schematic
Diagram and/or Wiring Diagram.
Many troubleshooting situations require that the
power remain on and that power terminals in the
equipment carry voltage. exercise extreme caution
when working on “live” equipment. avoid contact with
electrical components, except when testing with an
appropriate instrument.
Do not make any repairs to equipment unless you
are fully qualified, as described in the maintenance
section.
cautIon
WarnIng
WarnIng
sectIon 4 MaIntenance
NOTE:
Schematics on 279.4mm x 431.8mm
(11” x 17”) paper are included
inside the back cover of this manual.