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Appliance Description
The LE-200 is a universal tank control unit combining a modern milk cooling
regulator and a complete cleaning program control system in one.
This combined with the backup cooling function provided by the Carel Thermostat
makes the LE200 controller the most robust system in the market.
The control unit is on stand-by. The display shows ‘OFF’ and all output replays are
deactivated. In the OFF mode the agitator can be switched on and off by pressing
a button. In parameter [C25] a time can be set after which the agitator switches off
automatically. The following operating modes can only be selected from the OFF
mode. It is not possible to switch directly from one of them to another.
CAUTION: The control unit is live even when switched off.
The LE-200 has 2 adjustable target Temperatures.
(1) T1 is the STANDARD selection (Default 4 °C)
(2) T2 is the DEEP COOL selection (Default 2 °C)
The current milk temperature, as measured, is permanently displayed. If the milk
temperature exceeds the selected target temperature (T1 or T2) by the differential
value, the compressor relay and agitator are automatically activated. Once the
target temperature is reached, the compressor switches off, while the agitator
continues to operate for the pre-set ‘after-stirring’ time.
The DEEP COOL function also has an adjustable time setting (Default 30 minutes)
and the LE-200 will automatically switch back to T1 when this time is reached.
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.
Ifthedelayedstartisactivated(parameter[P62]),coolingstartsfortherstmilking
after a delay. If the cooling button is pressed twice, cooling starts immediately.
The cleaning timer controls water intake by time.
The LE-200 has the following built-in programs to cater for all tank sizes and to
allow for varying on-farm conditions.
(1) MAIN WASH ALKALINE: 3 Programs: 30 Minute, 50 Minute, 75 Minute
(2) DESCALE WASH (Alk + Acid): 3 Programs: 33 Minute, 50 Minute, 75 Minute
(3) Quick WASH: 2 Cycles : 3 Programs: 8 Minute, 12 Minute, 18 Minute
All running times (pump and detergent injection) can be set separately. Detergent
switchover from alkaline to descale can also be set. The LE-200 controls the various
processes and times needed for a thorough wash fully automatically.
Following a power failure, the control unit restarts in the mode in which it was
operating before the outage.
The control unit has various operating modes:
OFF mode
(with continuous stirring function)
COOLING mode
CLEANING mode
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