6. Setting of parameters
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– MRF-M2 -E - V0.7 - 23.04.2021
to section 6.3
Level
“Cooling parameters 2” (P parameters)
Settings for target temperature switchover T1 / T2
Range
Default
P80 Settings for target temperature switchover
0 .. 4
1
0: deactivated (always T1 active)
1: only manual switchover T1 / T2 via button.
Press “Cooling” button in cooling mode to change to the
other target temperature
.
- the corresponding LED switches over,
- The preset target temperature is briefly shown in the
display, then the current milk temperature.
2*: manual switchover to T2 with switch-back after a period.
Press the "T1/T2" button in cooling mode: The regulator
switches to "T2" for a period of [P81] and then back to "T1".
As long as "T2" is active, the "T2" LED flashes
“
3*: automatic switchover to "T2" at cooling start, with automatic
switch back to "T1" after time [P81] (note the setting of the
cooling start delay)
4: Switchover T1 / T2 externally (via digital input)
NOTE: When the contact is closed, "T2" is active
NOTE: Parameter [A21] must be set to 2!
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
* In the case of 2 and 3:
- If T1 is active, the LED for T1 is permanently on.
- If T2 is active, the LED for T2 flashes and shows
that switch-back to T2 will happen automatically.
P81 Duration until switch-back to T1
Enter the switch-back time to the target temper-
ature T1. (Parameter [P80] = 2 or 3)
1 .. 999 min.
120
Freezing protection by low pressure monitoring
Explanations see also section 7.7.2
(Can only be used if the digital input is set to [A21 = 4])
Range
Default
P84 Type of low pressure switch
1 .. 2
1
1: Compressor off when digital input is closed
2: Compressor off when digital input is open
P87 Monitoring delay after start compressor
10 .. 999 sec.
120
P88 Switch off time compressor in case of too
low pressure
1 .. 15 min.
10
P89 Monitoring time from the start of cooling
0: no time limit
1..600: minutes after starting the cooling, the low
pressure monitoring switches itself off until the
next cooling activation.
0 .. 600 min.
300
