- 12 -
Welding Power Operation
Turn on power supply or not?
Phase Lacking
〇 〇 〇 〇 〇 〇 〇 〇
Gas Cylinder and Gas
Regulator
Turn on gas supply
Residual Amount of Gas in the cylinder
Set value for flow
Connection joint loose
〇
〇
Gas supply hose (the whole
line from the high pressure
cylinder to the weld gun)
Connection joint loose
Gas hose damaged
〇
Wire Feeding Device
Wire feeding wheel does not match with the
diameter of wire in texturing tube
Crackle on wire feeding wheel, groove blocked up or
defect
Too tight or loose of the handle
Wire powder accumulated on the inlet of SUS pipe
〇 〇 〇 〇
〇
Weld Gun and Cable
1. Weld gun cable rolled up or over curved
2. Adaptability of conductive tip, wire feeding pipe
and cable diameter Worn, blocked up or
deformation, etc.
〇 〇 〇
〇
Body of weld gun
Loose connection of conductive tip, nozzle and
nozzle contactor
Contactor of weld gun body is not plunged in or
tightened well
〇
〇
Power supply cable of weld
gun as well as cable of
switch control
Break off (bending fatigue)
Damaged by weighted drop
〇 〇 〇
〇
〇
Surface Condition of Parent
material and length that
wire stretches out
Oil, dirty, rust and paint residues
Too long length of wire stretched out
〇 〇 〇 〇
〇
Output Cable
Cross-section of cable that connects to parent
material is not enough
Loose connection of
（
+
）
,
（
-
）
output cable
Bad electric conductivity of parent material
〇 〇 〇
Lengthened Cable
Cross-section of cable is not enough
It is rolled up or folded
〇 〇 〇 〇
Work Condition for Welding
Welding current, voltage, angle of weld gun, welding
rate and wire length stretched out should be
confirmed once again
〇 〇 〇 〇 〇
