GYS Gysmi 250 A TRI, Manual

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b.
Welding cables:
The welding cables should be kept as short as possible and should be positioned close
together, running at or close to the floor level.
c.
Protection and reinforcement:
Selective screening and shielding of other cables and equipment in the
surrounding area may alleviate problems of interference. Screening of the entire welding area may be
considered for special applications
d.
Connect the earth directly to the metal piece to be welded
: Where necessary, the connection of
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 Causes Remedies
The device does not deliver any current
and the yellow indicator lamp of thermal
defect
lights up.
The welder thermal
protection has turned on. Wait for the end of the cooling
time, around 2 minutes. The
indicator lamp
turns off.
The display is on but the device does not
deliver any current. The cable of the earth
clamp or electrode holder
is not connected to the
welder. Check the connections.
If, when the unit is on and you put your
hand on the welding unit’s body, you feel
tingling sensation. The welding unit is not
correctly connected to
the earth. Check the plug and the earth of
your electrical network.
Your unit does not weld correctly. Polarity error. Check the polarity advised on the
electrode packaging.
M
M
A
-T
IG
When starting up, the display indicates
or during one second and turns
off.
The voltage is not
respected (single phase
230V or three phase
400V +/- 15%) Have the electrical installation
checked.
Use a tungsten electrode with the
adequate size Default coming from the
tungsten electrode
Use a well prepared tungsten
electrode
Instable arc
Too important gas flow
rate Reduce gas flow rate
Welding zone
Protect welding zone against air
flows
Increase post-gas duration
The tungsten electrode gets oxidised and
tern at the end of welding.
Default coming from
post-gas or the gas has
been stopped
prematurely.
Check and tighten all gas
connections. Wait until the
electrode cools down before
stopping the gas.
T
IG
The electrode melts Polarity error Check that the earth clamp is really
connected to +