Memmert INCO 246/246 med CO2 Incubators (Generation 2003) - Manual (Page 48)

48
Advanced functions
Error rectification after the TB has been triggered:
1. Switch off appliance and leave to cool down
2. Contact the customer service and have the error rectified (e.g. replace temperature sen-
sor).
The appliance is only operational again after it has cooled down and the error has been elimi-
nated.
7.3.2 Electronic temperature monitoring ( TWW)
Temperature monitoring can be adjusted independently of the operating modes.
The manually set monitoring temperature
MIN and MAX the overtemperature control is
monitored by an adjustable over/undertemperature controller (TWW) protection class 3.3 acc.
to DIN 12880.
If the manually set monitoring temperature
MAX is exceeded, the TWW takes over tempera-
ture control and begins to regulate the monitoring temperature (Fig. 21). The alarm icon
flashes as a warning .
Setting MAX
Set
temperature
t
°C
Controller error
Emergency operation
Fig. 24 Schematic diagram of how the TWW temperature monitoring functions
The monitoring temperature must always be set sufficiently high above the maximum
working temperature.
If the acoustic alarm is switched on in the SETUP, the TWW alarm is additionally signalled by
an intermittent tone. If the SET key is pressed, the horn can be temporarily switched off until
the next alarm event occurs.