Eppendorf Galaxy CO2 Sensor - Manual (Page 71)

Equipment options
Galaxy ® 170 R/170 S CO
2
Incubators
English (EN)
71
– DEC.ON FAI.LED
• If the message says that disinfection failed, it will be followed by any combination of the following
messages:
– FAL.L DUR.ING HEA.T (this indicates that the temperature dropped more than 2 °C over a 60-second
period during the heating phase)
– FAL.L DUR.ING DEC.ON (this indicates that the temperature fell below 118.0 °C during the
disinfection phase)
– RIS.E DUR.ING COO.L (this indicates that the temperature rose more than 2 °C over a 60-second
period during the cool down phase)
– CAN.CEL BUT.TON PRE.SS (this indicates that the CANCEL button was pressed during the heating
or disinfection phase)
If more than one of the above-mentioned events occurred, the messages will be displayed consecutively in
the sequence in which the events occurred.
The disinfection cycle can be cancelled at any time by pressing the * key.
If the chamber temperature rises above setpoint or the element temperature is greater than the total of
chamber setpoint + chamber low control point temperature, the system will automatically begin cool down
until these conditions are satisfied.
If the incubator door is opened— a procedure that is highly discouraged because of the dangerously high
temperature inside the chamber—during a disinfection cycle, the process will continue as normal. A failure
message will, however, appear if the temperature falls as a result of the door opening during either the
heating phase or the disinfection phase.
If the incubator power is cycled OFF then ON, the incubator will power up as normal. This condition will be
indicated by an absence of a completed disinfection status message (either
DEC.ON PAS.SED or DEC.ON
FAI.LED )
If the chamber temperature is above 65 °C, the display will read 65.0 until the temperature drops below 65,
and a °CF.AIL alarm will occur since the control system cannot measure temperatures above 65 °C in
normal mode.
12.3.3 High temperature disinfection option with oxygen control
The Oxygen Sensor is an electrochemical device that will be destroyed by the high temperature used to
disinfect the incubator if left in place. For this reason, the Oxygen Sensor must be removed from the
incubator prior to a High Temperature Disinfection Cycle. The sensor can be accessed from the rear panel
of the incubator.
NOTICE! Risk of material damage
 To avoid possible damage to the CO
2
sensor, never leave water in the humidity tray while
the incubator is switched off, or when a high temperature disinfection cycle is initiated
(optional feature).
 Allow a clearance of 50 mm (2 in) to allow access for oxygen sensor (if installed) removal.