Tefcold BLC3 - Configurable Cycle Parameters; How to Use the Insert Probes; Example of a Blast Chiller Cycle

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• 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.
There are also 3 parameters:
first one concerning the cycle way of doing the cycle: by temperature or by time, the other two are related
to the defrost. These are dbC = defrost before cycle, dbH = defrost before holding (at the end of the
cycle).
17.1 CONFIGURABLE CYCLE PARAMETERS
cyS Cycle setting: tEP = by temperature. the cycle is done according to the rEM parameter; tiM: timed
cycle, based on the Pd1, Pd2, Pd3 parameters.
dbc (yes/no) Defrost before the cycle
iS1 (-50÷50°C;1°C/1°F) Insert Probe Set point: when the temperature measured by the three insert
probes reaches this value the first phase is ended.
rS1(-50÷50°C; 1°C/1°F) Room probe Set point for the first phase: it prevents temperature from reaching a
too low value during the hard cycle.
Pd1 (OFF÷4.0h;10 min)Maximum time for first phase
iS2 (-50÷50°C; 1°C/1°F) Insert probe set point when the temperature measured by the three insert
probes reaches this value the second phase is ended.
rS2 (-50÷50°C; 1°C/1°F) Room probe Set point for the second phase: it prevents temperature from
reaching a too low value during the second phase.
Pd2 OFF÷4.0h; res. 10 min Maximum time for second phase.
iS3 (-50÷50°C; 1°C/1°F) Insert Probe Set point to stop the third (and last) phase: when the temperature
measured by the three insert probes reaches this value the third phase is ended.
rS3 (-50÷50°C; 1°C/1°F) Room probe Set point for the third (and last) phase: it prevents temperature
from reaching a too low value during the third (and last) phase.
Pd3 (OFF÷4.0h; 10 min) Maximum time for the third phase.
dbH (yes / no) defrost before the hold phase
HdS (-50÷50 - OFF; 1 °C / 1°F) Set point of the holding phase. With “OFF” the hold phase is disabled.
IMPORTANT NOTE: If the duration time of a phase is set at the OFF value, the corresponding phase is
disabled. E.g. If Pd3= 0FF the third phase of the cycle is not active.
17.2 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 detect if the inset probe is not used, in this
case the cycle is made by time
17.3 EXAMPLE OF A BLAST CHILLER CYCLE.
The following drawing explains how a Blast Chiller cycle can be done.