Reading The Fitting Code With A Handheld Scanner; Starting The Welding Process; Welding Process; End Of Welding - Hürner HST 300 GeoTherm+ 2.0 Manuel Utilisateur

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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, instead of the "No Contact" message
(see Display 2) the number of the next welding report appears, e.g.,
"Prot. No.: 0015."
5.4

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 4).
The displayed values are the nominal welding parameters
contained in the fitting bar code. They are displayed before
the actual resistance of the electrofusion fitting is measured.
This means that even when the showing ohm value is o.k.,
Info
a resistance error may still be detected (see Sect. 8.2). Only
when the welding process starts, the display shows the actual,
measured welding 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.
5.5

Starting the Welding Process

After the fitting bar code was read, the input of all trace-
ability data that were enabled in the configuration menu
(see Sect. 9.2), is requested by the system.
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After reading or entering the fitting code, the welding process can
be started using the START/SET key, when the "Start ?" message is
displayed and there is no indication of a problem.
Pressing the START/SET key will trigger a confirmation message "Pipe
treated?," which in turn requires a confirmation with the START/SET
key to start the welding proper.
5.6

Welding Process

The welding process is monitored for its entire duration applying
the welding parameters contained in the fitting code. The welding
voltage, the resistance, and the welding current are displayed in the
lower line of the screen.
5.7

End of Welding

The welding process ends successfully if the actual welding time cor-
responds to the nominal welding time and the buzzer can be heard
twice.
Version July 2013 HÜRNER HST 300 GeoTherm + 2.0 User's Manual
Start ?
Temp.: 20°C
HST 75mm 58s
SAT 40.00V 0.80Ω
Display 4
Act. Time: 56sec
Nom. Time: 90sec
35.00V 1.57Ω 22.29A
Display 5
EN
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