EVCO EVFTFT818P7U Installer manual - Manual (Page 41)

EVCO S.p.A. EVFTFT818 | Installer manual ver. 2.1 | Code 144FTFT818E214
page 41 of 94
6.11 Continuous deep freezing
Operate as indicated to start the cycle:
1. Make sure the device is in the "on" status.
2. Make sure that the keyboard is not locked and that no procedure is in progress.
3. Press and release the key (1), press and release the key (2) and then press and release the key (3)
twice. The device will display the work set-point during deep freezing.
4.1 Press and release the MENU key and then press and release the key or the key to select the work set-
point during deep freezing.
4.2 Press and release the key or the key to modify this value and then the ESCAPE key to memorise it; this
value can also be memorised through parameter r8.
5. Press and release the START/STOP key (1): the cycle will be started.
During deep freezing the device displays the temperature of the cabinet, the program name (if envisioned) and the
time passed since the start of deep freezing.
Operate as indicated to stop the cycle:
6. Press and hold the START/STOP key 3 s.
Parameter r8 establishes the work set-point during deep freezing.
6.12 Blast chilling/deep freezing intensity
The device can manage the phase cut speed regulator for EVDFAN1 single phase fans (to be ordered separately); see
paragraph 14.4 “phase cut speed regulator for EVDFAN1 single phase fans”.
The regulator can be used to manage evaporator fan activities with a single analogue control, i.e. via the PWM
analogue output of the device and the regulator phase cut output (the digital output K3 is however activated).
Parameter F0 must be set at 3.
Parameters F18... F22 establish speed 1... 5 of the evaporator speed (intended as a percentage of the maximum
speed), parameter F23 establishes the speed at which the evaporator fan is switched on during post blast chilling