Page 7
Operation
The control cabinet is operated at three levels:
Working level
... for everyday operation by the end user.
When cooling mode is active, the milk temperature as
currently measured is permanently displayed.
The working level also contains the functions:
!
start cooling mode
!
Intermitted stirring during cooling mode (duration
depending on pre-setting). See section "Intermediate
stirring options during cooling" on Page 13.
!
Start permanent stirring
!
Switch of
!
Switch over target temperatures 4° / 8° (when activ)
!
Display and change of target temperatures 4° / 8°Note:
The changing of targetTemperatures is only possible,
when in programming level the parameter button lock
[C99] is set to '0'.
Programming level
This is the level at which the regulatory parameters are set.
Setting is more complex and possible only using specific
combinations of buttons so as to prevent accidental chan-
ges to settings.
Configuration level
This is the level at which the basic functions of the regulator
are set.
As subsequent interventions by the end user (after the
parameters have been set) can result in dangerous chan-
ges to functions which might not be immediately obvious,
access to the configuration level is even more complex.
Operation overview
!
The milk is cooled to the selected target temperature (4°
or 8°). (The adjusted target temperature is displayed by
LED 4° or 8°). The stirrer runs constantly at this stage.
!
Once the target temperature has been reached the
compressor switches off.
!
The stirrer switches off after the programmed afterstir-
ring time.
!
During refrigeration pauses, the stirrer switches on for
the duration of the afterstirring time to ensure an even
temperature throughout the milk. This will be repeaded
periodically.
!
Should the milk temperature exceed the selected target
temperature (4° or 8°) by the hysteresis value, the
compressor and stirrer are automatically switched on
again.
0°
T2
T1
Hysteresis
for T2
Hysteresis
for T1
Target
temperature
Target
temperature
°C
STOP
SET
4°/8°
4°
8°
Working
level
Programming
level
Configuration
level
for every day operation
for setting the regulator parameters
for setting the basic functions