End Of Welding; Performing An Electrofusion Joint; Connecting The Fitting; Reading The Fitting Code With A Handheld Scanner - Hürner WeldControl EF 355 Manuel Utilisateur

4.4.5 End of Welding

The welding is finished at the end of a successful joining and cooling
stage. The welder has to shut the pressure off from the pipes using
either the manual pressure release valve or the START/SET key.
4.5

Performing an Electrofusion Joint

4.5.1 Connecting the Fitting

The machine switches to the electrofusion process
when the welding cable is conntected to the weld-
ing connector, which holds the heating element
cable during butt welding. Then connect the con-
nection terminals of the cable to the fitting and check for proper
contact. Use terminal adapters if needed. The contact surfaces of the
cable connection terminals or adapters and the fitting have to be clean.
Dirty terminals may lead to improper welding and also to overheated
and fused connection terminals. Protect the cable connectors against
getting dirty at all times. Terminals and push-on adapters should be
considered consumables and, therefore, have to be checked before
every welding operation and replaced if damaged or dirty.
When the fitting is connected, the "No Contact" message, if appli-
cable, disappears and the number of the next welding report appears
(see Display 3).

4.5.2 Reading the Fitting Code with a Handheld Scanner

Only the bar code on the tag sticking on the fitting to be welded may
be used. It is not acceptable to read the fitting code tag of a fitting of
a different kind if the intended one is damaged or unreadable.
Read the fitting code by holding the scanner in front of the bar code
at a distance of 5 to 10 cm (2 to 4 inches), where the red line indicates
the reading area. Then push the reading button. If the data are cor-
rectly read, the welding unit confirms this by an audible signal and
displays the decoded data on the screen (see Display 32).
The displayed values are the nominal welding parameters
contained in the fitting bar code or computed based on
these data. They are displayed before the actual resistance
of the electrofusion fitting is measured. This means that
Info
even when the shown ohm value is o.k., a resistance error
may still be detected (see Sect. 4.6). Only when the welding
process starts, the display shows the actual, measured weld-
ing parameters.
The "Start ?" message means that the unit is ready to start the welding
process. Check the read data and if you see that they are erroneous,
delete them by pressing the STOP/RESET key. The read data are also
deleted if the welding unit is disconnected from the fitting.

4.5.3 Entering Welding Parameters Manually

To be able to enter the welding parameters manually, you have first
to connect the fitting to the welding unit with the welding cable.
The manual input of the parameters can then be accessed by pressing
the ò arrow key. The screen will show a menu as reproduced in Dis-
play 33, provided manual input is enabled in the configuration menu
(see Sect. 4.1.2). In other words, the manual parameter input replaces
reading the bar code of the fitting with a scanner.
24
EN
HÜRNER WeldControl EF 355 User's Manual
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
Nieder-Ohmener Str. 26
35325 Mücke, Germany
Start ?
Temp.: 20°C
HST 315mm
SAT 40.00V
Version January 2018
58s
0.80Ω
Display 32