Memmert ICH 256 Climate Chambers (Generation 2003) - Manual (Page 58)

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Advanced Functions
7.5 Log memory
The controller continually logs all relevant measured values, settings and error messages at
1-minute intervals.
The internal log memory is listed as a ring buffer, i e. the oldest log data is always overwritten
automatically with new data.
The logging function cannot be switched off and is always active. The measured data are
stored in the controller, safe from manipulation. For documentation purposes, the controller
memory can be read out via the Celsius control software. Each dataset is stored with a unique
timestamp.
The internal log memory has a size of 1024 kB. This corresponds to a storage capacity of
about three months in permanent operation.
If the power supply is interrupted, the time of the power cut and the return of voltage are
stored in the controller.
Reading in the log memory to the computer via Reading in the log memory to the computer via USB interface
The log data can be read out either via the USB interface and then printed out from the
computer or via a connected PCL3 compatible printer.
Using the “Celsius“ software, the log memory of the controller can be read out to a computer
and from there be displayed graphically, printed out and stored.
The log memory of the controller is not modified or deleted by reading it out.
Printing out log memory Printing out log memory
(see also chapter " Printer " on page Printer Printer 51 )
For a printout, the GLP header is also printed automatically, containing the following details:
►
Date of printout
►
Period of log
►
Consecutive page numbers
►
Serial numbers and appliance name
If the printer is not ready (e. g. ink cartridge or paper tray empty), no log data will be
lost. Multiple printouts can also be made, since the log memory is not deleted after
printing.
7.6 Automatic defrosting system
The integrated automatic defrosting system for the cooling unit ensures perfect operation of
the cooled incubator at low temperatures and in permanent operation. The time values for
the automatic defrosting system can be set in the submenu
SETUP
under under defrost (see page defrost defrost
52 ).
Due to long-term operation with a working temperature below +15 °C or due to a damp
chamber load and/or the door opening frequently, ice can form in the interior over time.
Heavy icing may impair the function of the appliance and could damage the cooling system.
In this case, the working chamber should be defrosted. This can be achieved by short heating
of the appliance (to 30-40 °C) or by switching it off for a longer period of time, e.g. over
night. The resulting melting water can best be collected with a cloth at the front edge of the
working chamber. Afterwards, the smooth surface of the interior can easily be cleaned.