Multitron - Operating Manual
Rectifying Faults
20 August 2020
Page
119
of
158
8.1
Alarm Messages
8.1.1
Parameter Alarms (High / Low)
A parameter alarm is triggered if the actual value of a parameter de-
viates too much from the setpoint after a specified waiting time. In
the example on the left the temperature is too high.
The maximum allowed deviation from the setpoint and the waiting
time are factory-set and cannot be changed.
INFORMATION
An alarm is only triggered if the actual value of the parameter
does not change for a certain period. If there is a fluctuation, the
counter for triggering the alarm is reset.
Alarm
Meaning
Deviation from
setpoint
Waiting time
Temp High
/
Low
Temperature too high/low
> ± 1 °C
20 min (18 °C to 40 °C)
75 min (< 18 °C / > 40 °C)
RPM High
/
Low
Rotation speed too high/low
> ± 10 min
-1
2 min
CO2 High
/
Low
CO
2
concentration too high/low
> ± 0.5 %
15 min
Humid High
/
Low
Humidity too high/low
> ± 5 %
15 min
Note: The
Humid High
alarm is deactivated by default. If required, the alarm can be
switched on in the settings menu (see chapter 7.7.12, page 116).
INFORMATION
If the setpoint for a parameter is limited in the settings menu of
the device and an attempt is made to enter higher value, the
bLoc
message appears.
8.1.2
Alarm Message
RESTARTED
The alarm message
RESTARTED
appears if the device has switched it-
self back on based on the stored parameters after a power failure.
After power is restored, the device automatically restarts with the
same parameters to avoid damage to the cultures due to an uninten-
tional termination of the process. The alarm message indicates that
the process has been interrupted. However, it is not possible to deter-
mine how long the interruption lasted.
