Operating Instructions | HERAcell® 150i / 240i
9
Cleaning and disinfection
9
Cleaning and disinfection
104
50115191 A / 08.2009
9.4 contra-con decontamination routine
The entire program run of the decontamination routine takes
approximately 25 hours.
contra-con process
During this routine, a hot and humid atmosphere at 90 °C with highly
decontaminating effect is created in the work space. The effectiveness of
the contra-con decontamination routine has been certified by independent
institutes. Information on these tests is available from Thermo Scientific
upon request.
After the run has been completed, the device must be started up again
using the auto-start routine.
Conditions that prevent the start of the contra-con
decontamination routine:
The contra-con routine cannot be started if one of the following
failure conditions exists.
Temperature control loop:
• Sensor breakage,
• actual value above set value (excessive deviation),
• actual value below set value (excessive deviation),
• set value not plausible,
• calibration values too high or too low,
• sensor communication failure,
• sensor parameter not plausible,
• no communication with LM 75.
Control loop for CO
2
gas supply:
• No communication with sensor.
In this case, the conta-con key is dimmed and its function is not
available.
Overtemperature protection:
If the overtemperature protection was enabled on the device,
the contra-con decontamination routine cannot be started
before the fault hes been corrected or reset.
No gas is supplied during the contra-con decontamination
routine on versions with the optional gas monitoring system:
If the error „no gas“ occurs during the contra-con
decontamination routine, the audible alarm is triggered. The
alarm can be confirmed by pressing on any position on the
display. In this case, the contra-con decontamination routine is
not cancelled. The alarm relay remains switched until the gas
monitoring system detects a full gas cylinder again.
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