Küppersbusch EDG 6600.0, Руководство по обслуживанию

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88 H3-72-01
For internal use only
1) It is absolutely essential that the sensor casing (connection 2) be earthed, depending on the safety
category of the electronics system connected.
2) Definition “thermal time control”: response time to 63°C (0 - 63% of the terminal value) in the case
of a sudden change in temperature from 25 to 85°C, sensor fully immersed in liquid (in this case
50 mm test immersion depth).
10.2 Water temperature sensor
Gauging the water temperature is monitored for sensor short
cuts and sensor interruptions. In the case of a malfunction, an
error is indicated.
As soon as the output voltage of the temperature sensor wiring
is below approx. 0.2 V (binary data
≤
10 “means a sensor short
circuit”), or as soon as the voltage exceeds approx. 4.9 V (binary
data
≥
252 means a “sensor interruption”), the display will show
an F2 fault. The mean value of the binary data checked is taken
in the appliance software over 16 readings.
In the event of a fault, the appliance control system switches off
all of the actuators and switches over to fault mode. It is not
possible to start up a program until the fault has been rectified.
Please note! The stability of the temperature sensor
characteristic is guaranteed by themanufacturer within the tolerance levels and is
not monitored by the software.
Possible causes of faults
• NTC temperature sensor defect (short circuit, discontinuity)
• Wiring defect (plug connections, cable discontinuity, cable short circuit)
• Wiring on the control device defect (filter capacitor defect, strip conductors excessively resistant)
• 0°C
10.3 Steam leak
Fault mechanisms
A fault will be indicated if, during a stipulated period of
time, a certain degree of lifting in the case of the steam
temperature is not reached.
he steam leakage monitoring system is active if the boiler
is switched on and the operating mode “hot air with
vaporisation” has not been selected. The temperature of
the steam must reach a certain temperature lifting within
a stipulated period of time (EEPROM parameter),
otherwise an F9 fault will be indicated. The steam
temperature measured fluctuates quite greatly if there is
no steam leakage.