Lincoln Electric SAF-FRO PRESTOTIG 400 Operator's Manual page 11

11. Fuse F1: Use the 2A/400V (6,3x32mm) slow-blow
fuse. See "Spare Parts" chapter.
12. Fuse F2: Use the 2A/400V (6,3x32mm) slow-blow
fuse. See "Spare Parts" chapter.
13. TIG Torch Holder: Rotary TIG torch handle.
Figure 3
User Interface
Figure 4
Detailed operation of Global User Interface can be found
in the IM3187 user manual.
English
Welding GTAW Process
PRESTOTIG 400 can be used to GTAW process with
DC (-).
PRESTOTIG 400 does not include the torch to GTAW
welding, but the one can be purchased separately. See
"Accessories" chapter.
Procedure of begin welding of GTAW process:

First turn the machine off.

Connect GTAW torch to [7] output socket.

Connect the work lead to [3] output socket.

Connect the work lead to the welding piece with the
work clamp.

Install the proper tungsten electrode in the GTAW
torch.

Turn the machine on.

Set the welding parameters.
Detailed operation can be found in the IM3187 user
manual.

The welding machine is now ready to weld.

By applying the principle of occupational health and
safety at welding, welding can be begun.
Welding SMAW Process
PRESTOTIG 400 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 and the electrode holder with lead to
output socket [3] or [7] and lock them. See the
Table 1.
Table 1 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 piece with the work
clamp.

Install the proper electrode in the electrode holder.

Turn the machine on.

Set the welding parameters.
Detailed operation can be found in the IM3187 user
manual.

The welding machine is now ready to weld.

By applying the principle of occupational health and
safety at welding, welding can be begun.
9
WARNING
Output Socket
[3]
[7]
[7]
[3]
WARNING
English