Lincoln Electric POWERTEC 205C Series Operator's Manual page 13

Welding GMAW, FCAW-GS, FCAW-SS
Process
POWERTEC 205C, 255C & 305C can be used to
welding GMAW, FCAW-GS and FCAW-SS process in
Manual Mode.
POWERTEC 205C, 255C & 305C do not include the gun
necessary for GMAW, FCAW-GS or FCAW-SS welding.
Depending on the welding process can be purchased
separately (see "Accessories" chapter).
Preparation the Machine for Welding
GMAW, FCAW-GS and FCAW-SS
Process.
Procedure of begin welding of GMAW, FCAW-GS or
FCAW-SS process:

Turn the machine off.

Place the machine conveniently near the work area
in a location to minimize exposure to weld spatter
and to avoid sharp bends in the gun cable.

Determine the wire polarity for the wire to be used.
Consult the wire data for this information. If it is
necessary, change polarity, see [17] or [18] point –
Terminal Block of Changing Polarity.

Connect output the gun to GMAW, FCAW-GS or
FCAW-SS process to Euro Socket [6].

Make a sure, if it is needed (GMAW, FCAW-GS
process), that the gas shield has been connected.

Connect the work lead to output socket [7] or [8].

Connect the work lead to the welding piece with the
work clamp.

Install the proper wire.

Install the proper drive roll.

Manually push the wire into the gun's liner.

Turn the machine on.

Insert the wire into the welding gun.
WARNING
Keep the gun cable as straight as possible when loading
electrode through cable.
WARNING
Never use defected gun.

Check gas flow with Gas Purge Switch [19] – GMAW
and FCAW-GS process.

Close the right side panel.

The welding machine is now ready to weld.
WARNING
The right side panel has to be completely closed during
welding.
WARNING
Keep the gun cable as straight as possible when welding
or loading electrode through cable.
WARNING
Do not kink or pull cable around sharp corners.

By applying the principle of occupational health and
safety at welding, welding can be begun.
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Maintenance
For any repair
maintenances, it is recommended to contact the nearest
Technical Service Center or Lincoln Electric. Repairs
and modifications performed by unauthorized service or
personnel will cause, that the manufacturer's warranty
will become null and void.
Any noticeable damage should be reported immediately
and repaired.
Routine maintenance (everyday)

Check condition of insulation and connections of the
work leads and insulation of power lead. If any
insulation damage exists replace the lead
immediately.

Remove the spatters from the welding gun nozzle.
Spatters could interfere with the shielding gas flow to
the arc.

Check the welding gun condition: replace it, if
necessary.

Check condition and operation of the cooling fan.
Keep clean its airflow slots.
Periodic maintenance (every 200 working hours but
at list once every year)
Perform the routine maintenance and, in addition:

Keep the machine clean. Using a dry (and low
pressure) airflow, remove the dust from the external
case and from the cabinet inside.

If it is required, clean and tighten all weld terminals.
The frequency of the maintenance operations may vary
in accordance with the working environment where the
machine is placed.
Do not touch electrically live parts.
Before the case of welding machine will be removed, the
welding machine had to be turned off and the power lead
had to be disconnected from mains socket.
Mains supply network must be disconnected from the
machine before each maintenance and service. After
each repair, perform proper tests to ensure safety.
10
WARNING
operations, modifications
WARNING
WARNING
WARNING
or
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