Troubleshooting - GYS 250 A TRI Manual De Instrucciones

Welding cables: The welding cables should be kept as short as possible and should be positioned close
b.
together, running at or close to the floor level.
Protection and reinforcement: Selective screening and shielding of other cables and equipment in the
c.
surrounding area may alleviate problems of interference. Screening of the entire welding area may be
considered for special applications
Connect the earth directly to the metal piece to be welded: Where necessary, the connection of
d.
the workpiece to earth should be made by a direct connection to the workpiece, but in some countries
where direct connection is not permitted, the bonding should be achieved by suitable capacitance,
selected according to national regulations.

TROUBLESHOOTING

Anomalies
The device does not deliver any current
and the yellow indicator lamp of thermal
defect  lights up.
The display is on but the device does not
deliver any current.
If, when the unit is on and you put your
hand on the welding unit's body, you feel
tingling sensation.
Your unit does not weld correctly.
When starting up, the display indicates
or during one second and turns
off.
Instable arc
The tungsten electrode gets oxidised and
tern at the end of welding.
The electrode melts
Causes
The welder thermal
protection has turned on.
The cable of the earth
clamp or electrode holder
is not connected to the
welder.
The welding unit is not
correctly connected to
the earth.
Polarity error.
The voltage is not
respected (single phase
230V or three phase
400V +/- 15%)
Default coming from the
tungsten electrode
Too important gas flow
rate
Welding zone
Default coming from
post-gas or the gas has
been stopped
prematurely.
Polarity error
Remedies
Wait for the end of the cooling
time, around 2 minutes. The
indicator lamp  turns off.
Check the connections.
Check the plug and the earth of
your electrical network.
Check the polarity advised on the
electrode packaging.
Have the electrical installation
checked.
Use a tungsten electrode with the
adequate size
Use a well prepared tungsten
electrode
Reduce gas flow rate
Protect welding zone against air
flows
Increase post-gas duration
Check and tighten
connections. Wait until
electrode cools down
stopping the gas.
Check that the earth clamp is really
connected to +
all gas
the
before
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