EVCO S.p.A.
Vcolor 869/879
| Installer manual ver. 2.2 | Code 144VC869E214
page 34 of 94
7.6
Running the cycle
Pressing the
key starts up the cycle as it has been set. If it is a temperature controlled cycle, the blast
chilling/blast-freezing phases terminate when the needle probe, or probes, reach the set temperature. If it is a time
controlled cycle, the blast chilling/blast-freezing phases terminate when the set time period, or periods, have elapsed.
While the cycle is in progress the screen below will be shown.
Cycle in progress
Value editing underway
The screen shows a summary of the features of the cycle in progress. Pressing the temperature area the display switches
to the screen where the values of the ongoing cycle can be edited.
Press area
to see the probe values, input and output status and any alarms underway.
Press area
, which is only active when an alarm is underway, to see the type of alarm in progress.
7.6.1
Needle probe insertion test
If the needle probe is enabled or if parameter P3 is set to a value other than 0, temperature controlled cycles are
preceded by a two-phase test to check that the needle probe is correctly inserted. If the needle probe is not enabled or
if parameter P3 is set at 0, only time controlled cycles can be selected.
The test consists of two phases, the second only carried out if the first was not successfully completed. Phase one is
successfully completed if the gap between the "temperature detected by the needle probe" and the "cabinet temperature"
is greater than the value set by parameter r17 in at least three out of five checks, these checks being performed at ten-
second intervals. The second phase is successfully completed if the gap between the "temperature detected by the
needle probe" and the "cabinet temperature" is greater than 1°C/1°F, as compared to the check previously carried out,
in at least six out of eight checks, these checks being performed at intervals corresponding to 1/8 of the time set by
parameter r18.
If a multineedle probe is being used, the test is performed for each probe.
If a multipoint probe is being used, when the test is concluded with a positive result for at least one of the sensors, the
device will function as follows.
-
The sensor showing the lowest temperature is then used as the point of reference for heating the needle
probe.
