9
6.
dEF:
for starting a manual defrost
2. Now the cycle is memorised and can be activated.
HOW TO MODIFY A CYCLE
1. Verify that none cycle is running. If one cycle is running stop it by pushing the key for 3s.
2. Push the to move among the cycles C1, C2, C3, C4 and the holding cycle. The related symbol on the
display will be lighted and the cycle will be selected
3. Hold push the key for several seconds till the display will show the first parameter of the selected cycle
(cyS) with its value.
4. Use the UP and DOWN keys to browse the parameters.
5. To modify a parameter push the SET key and use the arrow keys.
6. Confirm the new value by pushing the SET key.
7. The new value is recorded even if the programming is exited by time out.
TO exit:
wait 30s or push the SET+UP keys.
10. HOW A CYCLE IS DONE
1. Every programmable cycle Cy1, Cy2, Cy3 or Cy4 can be divided into up to 3 phases usually called:
•
hard chill
•
soft chill
•
freezing cycle
2. For each phase there are 3 parameters.
iS1, (iS 2, iS 3):
Set point related to the insert probes that stops the current phase.
rS1, (rS2, rS3):
set point of the room temperature for each phase.
Pd1, (Pd2, Pd3):
the maximum duration time for each phase.
Hds :
set point of the hold phase at the end of the whole cycle.
HOW TO USE THE INSERT PROBES.
By means the insert probe, the internal temperature of products can be checked. This measure is used to end
the various phase of the cycle. A special internal function detects if the inset probe is not used, in this case the
cycle is made by time
EXAMPLE OF A BLAST CHILLER CYCLE.
The following drawing explains how a Blast Chiller
cycle can be done
.
First phase: “Hard chill”.
It is normally used to fast chill hot foods. E.g. from
80°C / 170°F to 20°C / 70°F.
During “
Hard Chill
”, both compressor and fan are
always on until the
rS1
temperature is reached. At
this point compressor is turned on end off so as to
keep the temperature of the room at the
rS1
value.
“Hard Chill” ends when the temperature measured
