Setting The Safety Temperature (With Shutdown Function); Troubleshooting Guide / Error Messages - SCHOTT Instruments CT 52 Mode D'emploi

20.5. Setting the safety temperature (with shutdown function)

60
100
140
160
20
°C
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21. Troubleshooting guide / Error messages

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Troubleshooting guide / Error messages
(excess temperature protection)
Use a screwdriver to adjust the overtemperature protection device at
the rear of the thermostat to the desired value (e.g. 80 °C).
Setting range:
This safety installation is independent of the control circuit. When the
temperature of the bath liquid has reached the safety temperature, a
complete shutdown of the heater and pump is effected.
The alarm is indicated by optical and audible signals (continuous
tone) and on the MULTI-DISPLAY appears the error message
"Error 01".
Recommendation:
Set the safety temperature at 5 to 10 K above the working
temperature setpoint.
Whenever the microprocessor electronics registers a failure, a complete
shutdown of the heater and circulation pump is performed.
The alarm light " " illuminates and a continuous signal tone sounds.
Cause
The circulator is operated without
bath liquid, or the liquid level is
insufficient.
Tube breakage has
(insufficient filling level
excessive bath liquid pumped out).
The float is defect (e. g., because
damaged in transit).
The safety temperature value lies
below the working
setpoint.
A heat reaction or sudden temper-
ature increase, e.g. caused by an
exothermic chemical reaction or by
the immersion of preheated samples.
20 °C to 160 °C
Remedy
Replenish the bath tank with the bath
liquid.
occured Replace the tubing and replenish the
due to bath tank with the bath liquid.
Repair by
SCHOTT Instruments GmbH
Hattenbergstrasse 10
D55122 Mainz
Set the safety temperature to a higher
temperature value.
Set the safety temperature to a higher
value.