Lincoln Electric POWERTEC i250C STANDARD Operator's Manual page 23

User Interface Advanced (U7)
Figure 12
Detailed operation of User Interface U7 can be found in
the Advanced (U7) IM3170 user manual.
Welding SMAW Process
POWERTEC ® i250C STANDARD
POWERTEC ® i320C STANDARD
®
POWERTEC i380C ADVANCED, POWERTEC
ADVANCED does not include the electrode holder with
lead necessary for SMAW welding, but the one can be
purchased separately (see "Accessories" chapter).
Procedure of begin welding of SMAW process:

First turn the machine off.

Determine the electrode polarity for the electrode to be
used. Consult the electrode data for this information.

Depending on the polarity of using electrode, connect
the work lead [19] and the electrode holder with lead to
output socket [2] or [3] and lock them. See the Table 8.
Table 8 Polarity
The electrode holder
with lead to SMAW
Work lead
The electrode holder
with lead to SMAW
Work lead

Connect the work lead to the welding piece with the
work clamp.

Install the proper electrode in the electrode holder.

Turn the machine on.

Set the SMAW welding program.

Set the welding parameters.

The welding machine is now ready to weld.

By applying the principle of occupational health and
safety at welding, welding can be begun.
English
/ ADVANCED,
/ ADVANCED,
®
i450C
Output Socket
[3]
[2]
[2]
[3]
21
For SMAW process user can set:

Welding Current

Switch on / switch off the output voltage on the output
lead.

Wave Control:

Arc Force

Hot Start
Welding GMAW and FCAW Process in
non-synergic mode
During non-synergic mode wire feed speed and welding
voltage are independent parameters and must be set by
the user.
Procedure of begin welding of GMAW or FCAW-SS
process:

Determine the wire polarity for the wire to be used.
Consult the wire data for this information.

Connect output the gas-cooled gun to GMAW / FCAW
process to Euro Socket [4].

Depending on the using wire, connect the work lead
[19] to output socket [2] or [3]. See [27] point –
terminal block of changing polarity.

Connect the work lead [19] to the welding piece with
the work clamp.

Install the proper wire.

Install the proper drive rolls.

Make a sure if it is needed (GMAW, FACW-GS
process), that the gas shield has been connected.

Turn the machine on.

Push the gun trigger to feed the wire through the gun
liner until the wire comes out of the threaded end.

Install a proper contact tip.

Depending on the welding process and the type of the
gun, install the nozzle (GMAW process) or protection
cap (FCAW process).

Check gas flow with Gas Purge Switch [25].

Close the side panel.

Set the welding parameters.
WARNING
The side panel has to be completely closed during
welding.
WARNING
Never use defected gun.
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.

The welding machine is now ready to weld.

By applying the principle of occupational health and
safety at welding, welding can be begun.
English