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aborted welding operation, the welding unit has to be disconnected
from the fitting first, in order to be ready for the next welding.
6
Self-Monitoring Functions Overview
6.1
System Error
The welding unit must be disconnected immediately from
the power supply and the fitting. The auto-test has found
an error in the system. The unit must no longer be operated
Caution
and has to be turned in for check and repair.
6.2
Power Supply Failure
The last welding is incomplete. The welding unit was disconnected
from the power supply. This error has to be acknowledged by press-
ing the STOP key.
6.3
No Contact
There is no properly established electrical contact between the weld-
ing unit and the fitting (check push-on terminal on fitting), or the
heater coil is defective.
6.4
Low Voltage
The input voltage is below 180 volts. Adjust generator output volt-
age.
6.5
Overvoltage
The input voltage is above 280 volts. Adjust generator output volt-
age.
6.6
Temperature Error or Temperature Sensor Defective
The measured ambient temperature is outside the operating range of
the welding unit, i.e., below – 5°C or over + 40°C.
If this error is displayed during the unit's auto-test, the temperature
sensor is defective.
6.7
Frequency Error
T h e f r e q u e n c y o f t h e i n p u t v o l t a g e i s o u t o f t o l e r a n c e
(40 Hz - 70 Hz).
6.8 Low or Excess Current
The message is displayed if the there is a momentary current failure
or if the current regulator is defective.
6.9
Emergency Off
The welding process was interrupted by pressing the STOP key.
6.10 Used Fitting Error
After welding, the unit was not disconnected from the electrofusion
fitting, and the user tried to weld the same fitting a second time.
8
EN
HÜRNER HST – S – 160 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 August 2012
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