EVCO EVXV815P7 Installer manual - Manual (Page 27)

EVCO S.p.A. EVXV 800 range | Installer manual ver. 1.2 | Code 144XV800E124
page 27 of 66
To display the cabinet temperature, press and release the DEEP FREEZING key; to restore the normal display, press
and release the DEEP FREEZING key again or do not operate for 15 s.
If the temperature detected by the needle probe reaches the deep freezing end temperature within the maximum deep
freezing duration, it means that deep freezing has been completed successfully, the device will automatically pass to
storage and the buzzer will be activated for the period of time established with parameter AA.
Press and release a key to silence the buzzer.
During storage, the display shows the temperature detected by the cabinet and the LED is on.
Parameter r11 establishes the work set-point during storage.
If the temperature detected by the needle probe does not reach the deep freezing end temperature within the
maximum deep freezing duration, deep freezing will not be completed successfully but will continue, the LED will
flash and the buzzer will be activated.
Press and release a key to restore normal display and to silence the buzzer.
To display the cabinet temperature, press and release the DEEP FREEZING key; to restore the normal display, press
and release the DEEP FREEZING key again or do not operate for 15 s.
When the temperature detected by the needle probe reaches the deep freezing end temperature, the device
automatically passes to storage in the same way as illustrated previously.
6.6 Pre-cooling start-up
Every operating cycle can be preceded by pre-cooling.
If parameter r22 has value 0, it will be allowed to start pre-cooling by hand; if parameter r22 has value 1, it will be
allowed to start pre-cooling both automatically and by hand.
To start pre-cooling automatically, pass from the "stand-by" status to the "on" status (or switch on the device).
Operate as indicated to start pre-cooling:
1. Make sure the device is in the "on" status.
2. Make sure no procedures are in progress
3. Hold the BLAST CHILLING key down for 1 s: the LED will flash.
Operate as indicated to cut-off pre-cooling:
4. Hold the BLAST CHILLING key for 1 s or start an operating cycle.
Parameter r12 establishes the work set-point during pre-cooling.
When the cabinet temperature reaches that established with parameter r12, pre-cooling continues, the LED remains
on permanently and the buzzer is activated for 1 s.
6.7 Management of the test regarding correct insertion of
the needle probe
If the needle probe is enabled, i.e. parameter P3 is set at 1, the temperature-controlled cycles are preceded by a 2-
phase test for the verification of the correct insertion of the needle probe.
The second phase is only performed if the first is not completed successfully.
The first phase is completed successfully if the "temperature detected by the needle probe - cabinet temperature"
difference is greater than the value established with parameter r17 in at least 3 controls out of 5 (the controls are
performed at 10 s intervals, consider the difference without sign).
The second phase is completed successfully if the "temperature detected by the needle probe - cabinet temperature"
difference is 1°C/1°F higher with respect to the previous control in at least 6 controls out of 8 (the controls are
performed at time intervals corresponding to 1/8 of the time established with parameter r18; consider the difference
without sign).
If the test is completed successfully, the cycle will be started; if the test is not completed successfully, the LED
will flash and the buzzer will be activated the time set with parameter r23.