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