Kendro HERAcell 150, Operating Instructions Manual

Page: 133 / 251

Name/Name Datum/Date Benennung/Designation
Erstellt/Prepared
D.Dornseiff 01/15/98
Index Änderung Name/Name Datum/Date
Service Handbuch HERAcell 150
Service Manual HERAcell 150
C 202613 D.Dornseiff 06/26/03
Dokumentnr./Document No. Seite/Page
Datei/File
50051109_04_EN_C.doc 50051109 / C 27/ 9
Weitergabe sowie Vervielfältigung dieser Unterlage, Verwertung oder Mitteilung ihres Inhalts nicht gestattet, soweit nicht ausdrücklich zugestanden. Zuwiderhandlungen ver-
pflichten zu Schadensersatz. Alle Rechte für den Fall der Patenterteilung oder Gebrauchsmustereintragung vorbehalten. © Kendro Laboratory Products GmbH, Germany
4.7.4 TEMPERATURE MEASUREMENT/REGULATING CIRCUIT - DECONTAMINA-
TION MODE AT 90°C
Short description of the decontamination routine:
With 300 ml of water in the sample chamber, the decontamination heaters raise the
unit temperature to 90 °C. The exterior door is also heated in order to prevent conden-
sation from forming.
Press the -90 °C- key to start the decontamination routine.
Warm-up phase:
The unit heats up to the decontamination temperature.
Decontamination phase:
Duration: 9 hours. Once the unit reaches the lower limit band value (85 °C), the de-
contamination time holding counter starts.
Condensation phase:
Duration: 6 hours. The unit's base heater is turned off during this phase (water will
condense on the floor of the sample chamber as it cools).
Cool-down phase:
The unit cools down naturally to the specified set incubation temperature. During this
phase, the exterior door is heated with a base load factor to reduce the amount of
condensation that forms on the glass door.
Reheat phase:
Duration: 3 hours. In this phase, the unit operates at, for example, 37 °C. The base
heater remains off. Heat applied to the interior sample chamber surfaces and the glass
door removes as much condensation as possible.
To reactivate the base heater and switch to the incubation mode, either perform a
mains reset, or press the -90°C- key to exit the decontamination routine.
Remaining time table:
The remaining decontamination routine time shown in the CO
2
display only indicates
the holding value until the end of the decontamination routine!
The total time is calculated from the values of the time-controlled phases and the
values from a temperature/reset table for the set-value-controlled phases.