Zanotti DFZ User manual

DFZ
In Cab Control
Description and Operation

3
Index
1. Description of the control unit
1.1. Switching on the control unit
1.2. Diesel operation setting-up
1.3. Setting-up of the operation set point
1.4. Evaporator enable and disable
(only Multi-temperature Version)
1.5. Refrigerating group switching on
1.6. Manual de-frosting
1.7. Alarms
1.8. Alarm list
1.9. Alarm description
1.10. Diesel operation de-activation (Motor blockage)
1.11. Service
1.12. Maintenance
1.13. Input in programming
1.14. List of sections
1.15. Digital inputs management
1.16. Digital outputs management
1.17. Clock conf guration
1.18. Maintenance parameters
1.19. Probe parameters
1.20. Conf guration
1.21 Driver’s screen
1.22. Maintenance messages reset
1.23. Hour reset of diesel or electric motor’s operation
2. Parameter tables of programming

4
1. Description of the control unit
DFZ ZANOTTI’s refrigerating groups are provided with a microprocessor based electronic controller (in cab control)
which automatically controls the operation. In particular, the electronic controller superintends the activation and
deactivation of the diesel electric motor, in accordance with the preset temperature. The operation selection (diesel or
electric) is automatically performed by connecting the plug to the mains.
1.1. Switching on the control unit
To switch on the controller press the f rst key on the
right ( On/Off ) until the display is switched on.
The same procedure should be performed to switch
off the controller.
After the presentation screen the unit state is displa-
yed.
Press the key to switch the refrigerating group
on/off, while the display is lit.
Standard
Eletrical operation Diesel operation
Multi-temperature
n° 2 Evaporators n° 3 Evaporators

5
1.2. Diesel operation setting-up
By pressing the key you can select the type of operation:
• Automatic (start/stop); the unit switches on/off in accordance with the preset temperature (Setpoint).
• Continuous; the temperature is kept without switching off the motor.
By pressing the key you can select high or low speed (only for the start/stop operation).
ATTENTION
The switching from diesel to electric is automatically performed any time the machine is connected to the electrical
mains and is powered. If during the electrical operation a power failure occurs after about 5 minutes the machine
restarts by diesel.
1.3. Setting-up of the operation set point
To set up the operation set press the key, the screen will be displayed:
Standard
Press the keys to decrease or increase the value
Multi-temperature
n° 2 Evaporators n° 3 Evaporators
Press the Keys to move among the Set point (SP..)
Press the keys to decrease or increase the value.
To return to the main screen press the key.
1.4. Evaporator enable and disable (only Multi-temperature Version)
To enable or disable an evaporator press the
key.
To move to the side screen

6
By pressing the key you enter the evaporator’s enable and disable screen.
n°2 Evaporators n°3 Evaporators
Through the keys, select the evaporator to be disabled or enabled and press the key to change its
state. To return to the main screen press the key.
The main screen will display a note which indicates the disabled evaporators.
n°2 Evaporators n°3 Evaporators
1.5. Refrigerating group switching on
Press the key to switch the refrigerating group on/off, while the display is lit.
1.6. Manual de-frosting
From the main screen press the key for 5 seconds. The
de-frosting activation is affected by the closure of the de-frosting end
thermostat ( Klixon ). During the de-frosting phase the icon will
de displayed and simultaneously the key will start f ashing. Once the de-
frosting cycle is over the dip phase starts with unit stopped and f ashing
display.

7
1.7. Alarms
There are three types of alarm signalling:
1) Display Only
2) Blockage with automatic restoring
3) Blockage with manual restoring
1) When a display only alarm occurs the icon is displayed on the main display to indicate the presence of
an alarm as shown. The alarm is also signalled through the buzzers loca-
ted on both the unit and the controller.
Press the key once to deactivate the controller buzzer. Press the
key again to display the type of alarm signalled. The icon indi-
cates the alarm state, if the alarm is still active. To de-activate the buzzer
of the unit press the key. To de-activate the display signalling,
restoring the default state, press the state again. To return
to the main screen press the Key . If the alarm automatically
ceases the acoustical signalling is de-activated but the display signalling
remains active, to reset enter the alarm screen and press the ,
key, to restore the default state. To return to the main screen press the
key.
2) When an automatic restoring alarm occurs all of the above display only alarm is valid, but the refrigerating
automatically stops and restarts if the alarm ceases.
3) When a manual restoring alarm occurs the icon and the Blocked wording are displayed. Also in this case
the buzzers are activated.
• Press the key two times to access the screen where the type of
alarm is signalled.
• When the cause of the alarms ceases. By pressing the key
the “no alarm” screen is displayed The icon in the blocked state
remains lit even when the alarm ceases.

8
• Press the key to return to the main screen.
• When the alarm ceases press the Key to start the unit.
1.8. Alarm list
Cod Description Type of restoring
A01 Environment probe failure Manual
A04 Low pressure alarm Automatic
A05 Oil level alarm Display Only
A06 Air filter alarm Display Only
A07 Water temperature alarm Manual
A08 Microdoor Automatic
A09 Open door Automatic
A10 Oil pressure alarm Manual
A11 Maximum pressostat alarm Automatic
A12 High temperature alarm Display Only
A13 Low temperature alarm Display Only
A14 Thermal protection Automatic
A15 Low battery level Manual
A16 Start failed Manual
A17 Alternator failure Manual
A18 Pre-heat water probe failure Display Only
1.9. Alarm description
A01 Enviroment probe failure alarm
This alarm causes the machine to stop permanently until the failure is repaired. To re-start the machine, you should
reset the alarm following the procedure described in the above-mentioned paragraph and press the on/off
key.
A04/11 Pressostat alarm
It occurs upon a maximum or minimum pressure detection. The causes for the intervention of the maximum pressure
sensor may be due to inappropriate cleaning of the condenser or slackening of the condenser fan belts, The interven-
tion of the minimum pressure sensor may be due to Freon leakage. The intervention makes the machine stop until
the alarm ends.
A05 Oil level alarm
Is a signal only alarm which does not affect the machine operation.
A06 Air filter alarm
Is a signal only alarm which does not affect the machine operation.
A07 Water temperature alarm
Occurs when the radiator water temperature exceeds the allowed value. It causes the diesel motor to stop. To re-start

9
A08 Open micro door alarm
Occurs if the door of the motor room is opened. This alarm prevents the motor start.
A09 Open door alarm
Signals (if the micro-door is provided) the opening of the door of the load room.
A10 Oil pressure alarm
This alarm occurs in case the pressure of the motor oil drops; it causes the diesel motor to stop permanently. To re-
start the machine you should reset the alarm following the procedure described in the above-mentioned paragraph
and press the on/off key .
A12/13 Maximum/minimum temperature alarm
It occurs if the actual cell temperature and the controller set point differ beyond the preset factory limit.
A14 Thermal relay alarm
It occurs in case of anomalous current draw of the electrical motor and causes the machine to stop. To reset the
alarm, activate the control unit, disconnect power from the machine, open the electrical panel and reset the thermal
relay. Power the machine again, and press the on/off key located on the cabin control.
A15 Low battery alarm
If during the start/stop operation, the machine stops when the preset temperature (set-point) has been reached, a
battery voltage lower than 11 Volts for 10 seconds is detected, then re-start on continuous mode is forced.
A16/17 Start failure/ alternator failure
This alarm occurs when after f ve attempts (set in factory) the diesel motor is not restarted. The causes may be: failed
alternator, slackened belts, no fuel, blocked motor. If the same alarm occurs during the electrical operation the cause
should be the alternator’s inappropriate operation . To restart the machine just reset the alarm following the procedu-
re described in the above-mentioned paragraph and press the on/off key.
A18 Pre-heat water probe failure alarm
Is a signal only alarm which does not affect the machine operation.
1.10. Diesel operation de-activation (Motor blockage)
To activate the blockage to the operation with diesel motor press the key for some seconds until the
icon is displayed which indicates the impossibility of operation by diesel motor. Press the key to return to the
main screen.

10
1.11. Service
• Press the key and you switch to the screen where the maintenance key is dispalyed.
• By pressing the key you can display the following information:
o Alternator voltage
o Battery voltage
o Water temperature
o Diesel motor hours
o Electric motor hours
1.12. Maintenance
The request for maintenance intervention is displayed in the main screen by the icon .
• If you press the key you switch to the screen where the key is displayed.
• If you press the key you enter the screen where it is displayed the code relevant to the maintenance
required intervention whose meaning is explained in the appropriate paragraph of this booklet.
If you press the key you will switch to the previous screen.