Panasonic YD-500KR Operating Instructions Manual page 37

INITIAL TROUBLE DIAGNOSIS
Block and check item
Wire feeder
Welding torch and
torch cable
Torch body and
surroundings
Welding torch power
cable and torch
switch contro1 cable
Surface condition of
the base metal and
wire projection
length (Distance
between the chip and
base metal)
Output cable
Extension cable
Welding conditions
 Adaptability of the feed
 Roller and SUS tube wire
 Diameter
 Crack, choked groove, or tipping of
the feed roller
 Excessive/insufficient clamping of
the pressure rod
 Accumulation of wire powder around
the SUS tube inlet
 Overlapped winding of the torch
cable, bending at an acute angle
 Wire diameter adaptability, wear,
clogging, and deformation of the chip
and conduit tube
 Slackness of the chip, nozzle, and
insulated cylinder
 Insertion/clamping of the torch body
to the connector
 Snapping of the cable (bending
fatigue)
 Trace of a drop of a heavy substance
 Oil, contamination, rust, painting
film
 Too much wire projection
 Insufficient sectional of area of
cable
 Loose connection of the "+" or "-"
output cable
 Improper power source to the base
metal
 Insufficient sectional area of the
cable
 Overlapped winding of the cable in
use
 Reconfirmation
current and voltage, torch angle,
welding speed, wire projection length,
etc.
Error
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or the welding
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