Deleting Data From Memory; Keeping Data In Memory; Dedicated Welding Unit Information; Displaying Characteristics Of The Welding Unit - Hürner HST 300 GeoTherm+ 2.0 Manuel Utilisateur

resume the process and displays a "Download cancelled"
error message. To acknowledge this error, press the START/
SET key.
7.5

Deleting Data from Memory

The report data in memory can be deleted only after all welding reports
were transferred, which is indicated by the "Download completed"
message. When the storage media is unplugged, a "Delete Memory"
message appears. If the START/SET key is pressed at this point, a fur-
ther confirmation message "Delete Memory, sure?" is shown, which
has to be confirmed by pressing the START/SET key once again. Then,
the report data in memory are deleted.
7.6

Keeping Data in Memory

When the cable or storage media is unplugged, a "Delete Memory"
message is displayed. Press the STOP/RESET key to keep the current
report data in memory. They can then be printed off once again.
Make a habit of handling the internal storage as described
at the beginning of Sect. 7, to maintain data integrity and
avoid any inadvertent deletion of the reports in memory.
Important
8

Dedicated Welding Unit Information

8.1

Displaying Characteristics of the Welding Unit

The key technical information on the welding unit itself is displayed
by pressing the ð key at the "Enter Fitting Code" screen. They are
the software version, the serial number of the unit, the date of the
next scheduled maintenance, and the number of currently available,
unused reports. To quit this screen, press the STOP/RESET key.
If the scheduled service is overdue, a service due message appears on
the screen as soon as the unit is plugged into the mains or genera-
tor power supply. This message has to be acknowledged by pressing
START/SET.
8.2

Measuring Resistance

When the START/SET key was pressed to initiate a welding process,
the resistance value of the fitting is measured and compared to the
value entered as part of the read fitting code. If the gap between
the two values is smaller than the acceptable tolerance given in the
code, the welding process starts. If the gap is greater than the preset
tolerance, the welding unit aborts welding and displays a "Resistance
Error" message. Furthermore, it displays the actual resistance value
measured for the connected fitting.
The reason for a resistance error may be poorly contacting and/or worn
connection terminals. Therefore, if this error occurs, check them for
proper fit and, if worn, replace them with new ones.
8.3

Overheating Switch

The welding process aborts if the temperature of the transformer in
the welding unit is too high. The overheating circuit breaker for the
transformer stops the welding if the temperature reading is too high
and the remaining welding time is longer than 800 seconds. The display
and the welding report will show an "Overheated" message.
12
EN
HÜRNER HST 300 GeoTherm + 2.0 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
Version July 2013