Version July 2014
EN
11
HÜRNER HST 300 Monofuse 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
be heard. Turn the buzzer volume up or down to the desired value
using the
ï
,
ð
arrow keys (from 0 to 100) and confirm your setting
by pressing the START/SET key.
8
Self-Monitoring Functions Overview
8.1 Errors During Data Input
8.1.1 Fusamatic Contact Error
There is no contact or a contact that did not allow proper fitting char-
acteristics reading on a fitting with Fusamatic contact system.
8.1.2 No Contact
There is no properly established electric contact between the welding
unit and the fitting (check push-on terminal on fitting), or the heater
coil is defective.
8.1.3 Low Voltage
The input voltage is below 175 volts. Adjust generator output volt-
age.
8.1.4 Overvoltage
The input voltage is over 290 volts. Decrease generator output volt-
age.
8.1.5 Overheated
The transformer temperature is too hot. Let the welding unit cool
down for about 1 hour.
8.1.6 System Error
CAUTION!
The welding unit has to be disconnected immediately from both the
power supply and the fitting. The auto-test has detected an error in
the system. The unit must no longer be operated and has to be sent
to an approved shop for check and repair.
8.1.7 Clock Error
The internal system clock works improperly or is defective. Reset it, or
send the welding unit to the manufacturer for check and service.
8.1.8 Unit to Service
The recommended next service date for the welding unit is overdue.
The service due message has to be acknowledged by pressing the
START/SET key. Send the welding unit to the manufacturer or an ap-
proved service point for service and check-up.
8.2 Errors During Welding
All errors that occur while welding is in progress are also indicated
by an audible alarm.
8.2.1 Low Voltage
The input voltage is below 175 volts. If the error condition persists for
longer than 15 seconds, the welding process will be aborted. If the
voltage goes down below 170 volts, the welding process will abort
immediately.
