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MASTER 250-350-450
EN
Electric shocks This appliance must not be used on a three phases power supply. Do not touch the spare
parts when the unit is still connected to the mains. Check the electrical network corres-
ponds to the machine.
Moving Do not underestimate the weight of the apparatus. Do not carry it over people or things.
Do not drop it. Do not set it down brutally
Burns Wear protective or re-proof clothing (overalls, jeans).
Use some welder gloves and a re-proof apron.
Protect the others by installing non ammable protection wall , or prevent the others to
not look at the arc and to keep a sufcient distance
Fire risks Suppress all ammable products from the working area. Do not work near ammable
gas.
Smokes Do not inhale gas or welding smokes. If indoors ventilate the area well and/or use local
extraction ventilation equipment to remove fumes and gases.
Extra precautions Any welding operation :
- in environments with increased risk of electric shock,
- in conned spaces,
- in the presence of ammable or explosive materials must be evaluated in advance by
an “expert supervisor” and must always be carried out in the presence of other people
trained to intervene in case of emergency.
Technical protection measures MUST BE taken as described in the TECHNICAL SPECIFI-
CATION «IEC 62081».
Welding in raised positions is forbidden unless safety platforms are used.
People carrying pacemaker have to consult a doctor before using these machines.
Do not use the unit to thaw pipes.
TROUBLESHOOTING
Anomalies Causes Remedies
Only the green indicator is on but
you cannot weld.
Connection failure of the earth clamp
or electrode holder.
Check the connections.
If, when the unit is on and you put
your hand on the welding unit’s body,
you feel tingling connection.
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.
5


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