Manual Defrost - Carel MasterCella Hoja De Instrucciones

3.2 Buttons on the keypad
Icon Button
Pressing the button alone
HACCP enters the menu to display and delete of
the HACCP alarms
ON/OFF if pressed for more than 5 s, switches the
unit on/off
PRG/MUTE if pressed for more than 5 s, accesses the
menu for setting the type "F" parameters
(Frequent). In the event of alarms:
mutes the audible alarm (buzzer) and
deactivates the alarm relay
UP/CC if pressed for more than 5 s, activates/
deactivates the continuous cycle
LUCE if pressed for more than 1 s, activates/
deactivates auxiliary output 2
AUX if pressed for more than 1 s, activates
deactivates auxiliary output 1
DOWN/DEF if pressed for more than 5 s, activates/
deactivates a manual defrost
SET if pressed for more than 1 s, displays
and/or sets the set point
Setting the set point (desired temperature value)
To display or set the set point, proceed as follows:
1) press the set button for more than 1 second to display the set point;
2) increase or decrease the value of the set point with the
3) press the set button again to confi rm the new value.
Resetting alarms with manual reset
All the alarms with manual reset can be reset by pressing the prg and

Manual defrost

As well as the automatic defrost, a manual defrost can be started if the temperature conditions are right, by pressing the button
ON/OFF button
Pressing the button for 5 seconds switches the unit on/off. When the controller is off it is in standby mode, therefore before performing maintenance on
the unit, power must be disconnected.
HACCP function
MasterCella is compliant with the HACCP standards, as it monitors the temperature of the food stored. Alarm "HA"= maximum threshold exceeded: in
addition, up to three HA events are saved (HA, HA1, HA2), respectively from the most recent (HA) to the oldest (HA2), with a signal HAn that displays the
number of HA events that have occurred. Alarm "HF"= power failure for more than 1 minute and maximum threshold AH exceeded: up to three HF events
are saved (HF, HF1, HF2), respectively from the most recent (HF) to the oldest (HF2), with a signal HFn that displays the number of HF events that have
occurred. Setting the HA/HF alarm: parameter AH (high temp. threshold); Ad and Htd (Ad + Htd = HACCP alarm delay).
Displaying the details
1) When pressing the HACCP button for more than one second, the display shows the name of the fi rst parameter relating to the HA and HF alarms;
2) Use the and buttons to scroll the parameters relating to the HA and HF alarms;
3) Once having reached the desired parameter, press set to display the value;
4) If the selected parameter is HA or HF, press the
HF activated.
Example: y03 M07 d22
The sequence indicates that the last HA or HF alarm was activated on 22 July 2003 at 23:57 and lasted 99 hours;
5) Pressing set again returns to the list of param. relating to the HA and HF alarms; the following functions are available from inside the menu:
- delete the HACCP alarm, by pressing the HACCP button for more than 5 seconds (the message 'rES' indicates the alarm has been deleted, the HACCP
LED stops fl ashing, the HA and/or HF signal is reset and the monitoring of HA resumes);
- delete the HACCP alarm and the alarms saved (HAn, HA, HA1, HA2, HFn, HF, HF1, HF2), by pressing the HACCP and
Normal operation
Pressing together with other buttons
• if pressed for more than 5s together with the SET
button, accesses the menu for setting the type "C" para-
meters (Confi guration) or downloading the parameters.
• if pressed for more than 5s together with the UP/CC
button, resets any alarms with manual reset
• if pressed for more than 5s together with the SET
button, starts the report printing procedure (function
available but management to be implemented)
• if pressed for more than 5s together with the PRG/MUTE
button, resets any alarms with manual reset
• if pressed for more than 5s together with the PRG/MUTE
button, accesses the menu for setting type "C" parameters
(Confi guration) or downloading the parameters
• if pressed for more than 5s together with the UP/CC
button, starts the report printing procedure (function
available but management to be implemented)
and buttons respectively, until reaching the desired value;
and buttons to display the year, month, day, hour, minute and duration of the last alarm HA or
h23 m57 t99 start again...
buttons together for more than 5 s.
4
Start-up Automatic address
assignment request
if pressed for more if pressed for more
than 5 s at start-up, than 1 s, starts the
activates the procedure automatic serial
for restoring the default address assignment
parameters procedure
for 5 seconds.
buttons for more than 5
+050004105 rel. 2.2 del 26.09.07
Tab. 3.b