Hürner WeldControl EF 250 Manuel Utilisateur page 39

H Ü R N E R S c h w e i s s t e c h n i k G m b H
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35325 Mücke, Germany
3.5 Overview of the Welding Process
By plugging either the welding cable to an electrofusion fitting or
the control cable of the heating element for butt welding into the
appropriate connector, the welder decides which welding process
will be run. The welding control program supports, with both pos-
sible processes, the extended data encoding specifications under the
ISO 12176 standard, e.g., pipe and fitting traceability codes. To use this
capability, the desired data have to be enabled in the configuration
menu, at "Recording" (see Sect. 4.1).
With both possible processes, all data that are relevant for the joint
or for component traceability are saved to the internal memory and
can be sent to a USB stick.
Using the electrofusion process allows welding
electrofusion fittings that feature a bar code. Every
fitting is provided with a tag with one or two bar
codes on it. The structure of this code is interna-
tionally standardized. The first code, encoding the
data on proper welding, complies with ISO 13950, the second code,
if present, encoding the component traceability data, complies with
ISO 12176.
The welding parameters can also be entered manually. The welding
system is microprocessor-controlled and:-
• controls and monitors the welding process in a fully automated
way, when the welder starts it after component preparation,
• determines welding duration depending on ambient tempera-
ture,
• shows all information on the display in plain text.
In the manual mode of the butt-welding pro-
cess, the machine performs a classic, manual butt-
welding operation. It monitors the temperature of
the heating element, taking the desired nominal
temperature that can be set using the ñ and ò
cursor keys, into account, and readjusts it as needed.
In the WeldControl mode of the butt-welding process, the ma-
chine walks the welder through the welding process, monitors all
relevant parameters, and allows entering traceability data for the
welded components on intuitive menu screens. Parameters of the
welding operation, component traceability data, and possible errors
are recorded and saved to memory and can be transferred via one of
two USB interface ports to a USB stick, a USB-compatible printer, or a
PC with the management and database application DataWork.
The welder performs the butt-welding process in the following
manner:
• Pipes are clamped into the frame.
If pipes with an outside diameter smaller than the maximum
dimension of the machine are welded, select the reducer set
needed. The 8 individual inserts of the set that matches the out-
side diameter of the pipe to be welded have to be attached to
the clamps of the machine chassis using the provided bolts.
• In the manual mode, applicable welding times and pressures are
looked up in the overview tables in the appendix.
• In the WeldControl mode, the mandatory and the optional
component traceability data are entered in the menus on the
screen.
Version January 2018 HÜRNER WeldControl EF 250 User's Manual
11
EN