5. Operating
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– MRF-M2 -E - V0.7 - 23.04.2021
Page 17
5.
Operating
5.1 Function overview
The MRF-M2 is a milk temperature regulator.
It distinguishes between three different
operating modes:
5.1.1 OFF mode (Stand-by)
Der Regler befindet sich im Stand-by-Betrieb.
-
‘OFF’ is shown in the display,
- all LEDs are out.
- both output relays are deactivated.
CAUTION: The control unit is live even when switched off!
5.1.2 Cooling mode
The cooling mode can only be started from the OFF mode. When the cooling mode
is activated, the currently measured milk temperature is permanently shown on the
display.
It is possible to switch between two freely adjustable target temperatures by pressing
a button. If the milk temperature exceeds the selected target temperature (T1 or T2)
by the hysteresis value, the compressor relay and agitator are automatically acti-
vated. Once the target temperature is reached, the compressor switches off, while
the agitator continues to operate for the pre-set 'after-stirring' time.
During non-cooling periods the agitator switches on at pre-set intervals in order to
ensure an even temperature throughout the milk.
Independently of this a short or long 'intermediate stirring' period can be selected
during cooling by pressing a button.
Start cooling mode by pressing button on foil keyboard:
The cooling mode is started by pressing the 'Cooling' button.
If a start delay is activated for the first milking [P61], the cooling start is delayed.
Pressing the 'Cooling' button again starts cooling immediately.
Start cooling mode via digital input:
The cooling mode starts immediately - depending on the setting in parameter [P61]
- or with a delayed start cooling.
5.1.3 Continuous stirring mode
From OFF mode, the agitator can be switched on by pressing the AGITATOR button
and then switched off again by pressing the OFF button. Parameter [C25] can be
used to set the time after which the agitator is to switch off automatically. The count-
down can be interrupted at any time using the OFF button.
If [C25] is set to '0', the agitator will run continuously, but can be switched off at any
time using the OFF button.
°C
T1
T2
T1
T2
OFF
SET
SET
DANGER!
