Fronius TransPocket 1500 Service Manual page 37

Troubleshooting Error
table
Poor ignition
(continued)
characteristics
(Rod-electrode welding)
Poor ignition
characteristics
(TIG-welding)
Mains fuse and/or safety
cut-out has tripped
Loud bang
in some cases the mains
fuse or automatic circuit-
breaker is tripped as well
Poor welding
characteristic
(high degree of spattering)
TIG welding
Tungsten electrode melts
off; tungsten inclusions in
the base metal during
ignition
Cause
Wrong welding process selec-
ted
Wrong welding process selec-
ted
TP 1500 TIG: Automatic gas
flow does not start up
Tungsten electrode is dirty or
tip is damaged
An unalloyed tungsten elec-
trode (colour-coded green) is
being used
Welding torch is damaged:
Torch body, protective hose
etc. are defective
Mains fuse too weak; incorrect
safety cut-out
Mains fuse is tripped under
no-load conditions
Varistor (overvoltage protec-
tor) has been tripped; mains
voltage error
Incorrect electrode polarity
Poor earth connection
Unfavourable set-up settings
for the selected welding
process
Incorrect electrode polarity
Wrong shielding gas, no
shielding gas
Wrong welding process selec-
ted
37
Remedy
Select the welding process
"Rod-electrode welding" or
"Rod-electrode welding with
CEL-electrode"
Select the "TIG welding" or "TIG
pulsed arc welding" process
(TP 1500 TIG)
Gas solenoid valve or LCA 15
board is faulty. See "TP 1500
TIG: No gas flow"
Resharpen the tungsten elec-
trode
Use another type of tungsten
electrode
Change the damaged parts or
replace the whole torch
Insert correct fuse (see tech-
nical data - rating plate")
Power source should be servic-
ed
Replace the varistor (See
"Installation instructions for
varistor")
Reverse polarity - Note manu-
facturer's instructions
Fix earth clamp directly on to
the work-piece
In the set-up menu, optimise
the settings for the selected
welding process
Connect TIG welding torch to
"- pole"
Use inert shielding gas
(argon)
Select the "TIG welding" or "TIG
pulsed arc welding" process