EVCO EK825AP7 - Manual (Page 5)

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Cycle number 5: Very cold-storing:
Push the key T 4 to select this cycle and the key T 10 to start it: the LED L 1 turning on.
The indicators DY 1 and DY 2 respectively display the temperature read by the cabinet probe and the indication "---".
The instrument works as a normal thermostat with evaporator fans and defrost management.
The kind of temperature regulation is ON-OFF: the temperature that regulates the compressor activity is the temperature read by the cabinet
probe, the set can be established with the parameter "c6", the hysteresis can be established with the parameter "c0"; the temperature that regulates
the evaporator fans activity is the temperature read by the evaporator probe, the set can be established with the parameter "F1", the hysteresis
can be established with the parameter "F2".
Cycle number 6a: Quick-freezing for temperature and very cold-storing:
Push the keys T 3 and T 4 to select this cycle and the key T 10 to start it: the LED L 2 turning on.
When the phase of quick-freezing ends (it is related in Cycle number 4a) the instrument moves to the phase of very cold-storing (it is related
in Cycle number 5).
Cycle number 6b: Quick-freezing for time and very cold-storing:
Push the keys T 3, T 4 and T 7 to select this cycle: the LED L 6 turning on, the LED L 5 turning off.
The indicator DY 2 displays the length of the quick-freezing for time: to modify its value push the key T 8 or T 9.
Push the key T 10 to start the cycle: the LED L 2 turning on.
When the phase of quick-freezing ends (it is related in Cycle number 4b) the instrument moves to the phase of very cold-storing (it is related
in Cycle number 5).
Needle probe properly positioned verify:
The instrument automatically makes a test to verify the proper insertion of the needle probe at any activation of a cycle/phase of quick cooling/
freezing for temperature.
The test is organized on two levels (fast and differential): the happy success of the fast test excludes the differential test.
During the fast test the instrument verifies for five times if the value obtained with the subtraction of the temperature read by the cabinet probe
at the temperature read by the needle probe is higher than the temperature setted with the parameter "c7" (the test is overcoming if at least
3 on 5 verifies has a happy success); the verifies is maked every ten seconds, then the global length of the fast test is 50 seconds.
During the differential test the instrument verifies for height times that the value obtained with the subtraction of the temperature read by the
cabinet probe at the temperature read by the needle probe it is increase compared to the previous verify at least of 1 °C (the test is overcoming
if at least 6 on 8 verifies has a happy success); the verifies is do any 1/8 of the time setted with the parameter "cE" (to exclude the differential
test set the parameter "cE" with a value lower than 4 seconds, to exclude all the test set the parameter "c7" to 0).
If the test have not a happy success, the cycle not ends, the buzzer is activated till when it is stopped (pressure on key T 9 permit
to stop the buzzer), the indicators DY 1 and DY 2 respectively display the indications " " in alternate with the temperature
read by the cabinet probe and the decrease of the time established with the parameter "c1" or "c4": push the key T 6 to manually
confirm the proper insertion of the needle probe.
Hard-Soft quick-cooling:
This temperature quick-cooling modality is only available during a cycle/phase of quick-cooling.
During the quick-cooling, this operation is divided in two parts: a Hard phase (in this phase the compressor work with a very low setpoint to
permit to maximize the temperature quick-cooling speed) and a Soft phase (in this phase the compressor work with a setpoint higher than
the previous setpoint).
To select the Hard-Soft quick-cooling push the key T 5 when the instrument is in STAND-BY status: the LED L 3 turning on.
If a cycle/phase of quick-cooling for temperature is selected, during the Hard phase the working-setpoint of the compressor can be established
with the parameter "cF" (the Hard-phase automatically ends when the temperature read by the needle probe reaches the setpoint established
with the parameter "cd"), during the Soft-phase the compressor works in the same way of the cycle 1a.
If a cycle/phase of quick-cooling for time is selected, during the Hard-phase the working-setpoint of the compressor can be established with
the parameter "cF" (the Hard-phase automatically ends when the time established with the parameter "t1" is passed), during the Soft-phase
the compressor works in the same way of the cycle 1b.
To unselect the Hard-Soft quick-cooling push the key T 1, T 2, T 3 or T 4 during the STAND-BY status: the LED L 3 turning off.