Keeping Data In Memory; Dedicated Welding Unit Information; Displaying Characteristics Of The Welding Unit; Measuring Resistance - Hürner HST 300 Manuel Utilisateur

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6.6

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. 6, to maintain
data integrity and avoid any inadvertent deletion
Important
of the reports in memory.
7

Dedicated Welding Unit Information

7.1

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 generator 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 value is obviously incorrect, the welding unit aborts
welding and displays a "Resistance Error" message. It also
displays the actual resistance value measured for the con-
nected 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 trans-
former of the welding unit is too high. The overheating
circuit breaker for the welder stops the welding process
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.
Version April 2019 HÜRNER HST 300 Manual USB 2.0 User's Manual
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EN