Measuring Resistance; Overheating Switch; Indication Of Power Supply Failure At The Last Welding; Configuring The Welding Unit - Hürner HST 300 Manual USB 2.0 Manuel Utilisateur

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
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.
7.2

Measuring Resistance

When the START/SET key was pressed to initiate a welding process,
the resistance value of the fitting is measured. If the measured value
suggests a technical problem, the welding unit aborts welding and
displays a "Resistance Error" message. It also displays the actual re-
sistance 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.
7.3

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.
7.4

Indication of Power Supply Failure at the Last Welding

The message "Power Supply Failure Last Welding" indicates that
the previous welding aborted because of a power supply failure.
The reason may be too weak a generator or too long or too thin an
extension cable, or a tripped cut-out in the mounting box. The next
welding operation is still possible after acknowledging the message
by pressing the STOP/RESET key.
8

Configuring the Welding Unit

With the MENU key, the welding unit can be reconfigured. When it
is pressed, a screen reading "Settings – M – " is displayed, in which
the settings menu proper (Display 5) can be opened by pressing the
MENU key again.
In the configuration menu, use the ñ and ò arrow keys to select the
desired set-up option.
If a "M" is shown next to a set-up option, this indicates that a sub-
menu is accessible here by pressing the MENU key.
Press the START/SET key to confirm the set-up and save it to
memory.
Understanding the settings:
"Language – M – " means that by pressing the MENU key, the user
can access a sub-menu for selecting the display and report lan-
guage (see Sect. 7.1).
"Date/Time – M – " means that by pressing the MENU key, the user
can access a sub-menu for setting the clock (see Sect. 7.2).
"Buzzer Volume – M – " means that by pressing the MENU key, the
user can access a sub-menu for setting the volume of the status
buzzer (see Sect. 7.3).
Version February 2014 HÜRNER HST 300 Manual USB 2.0 User's Manual
*** SET-UP MENU ***
Language -M-
>Date/Time -M-
Buzzer Volume -M-
Display 5
EN
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