Zanotti DFZ User manual

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DFZ
Cabin Control
Description and operation

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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 configuration
1.18. Maintenance parameters
1.19. Probe parameters
1.20. Configuration
1.21 Driver’s screen
1.22. Reset of maintenance messages
1.23. reset of operation hours of diesel or electrical motor’s operation
2. Tables of parameter programming

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1. Description of the control unit
DFZ ZANOTTI’s refrigerating groups are provided with a microprocessor electronic controller (cabin control) which au-
tomatically 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 equipment press the first key on the
right ( On/Off ) until the display is switched on.
The same procedure should be performed to switch
off the keyboard.
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

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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 temperat. (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

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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 be displayed through a note which indicated the disabled evaporator.
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 ( clixon ). During the de-frosting phase the icon will
de displayed and simultaneously the key will start flashing. Once the
de-frosting cycle is over the dipping phase starts with unit stopped and
flashing display.

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1.7. Alarms
There are three types of alarm signalling:
1) Only display
2) Blockage with automatic restoring
3) Blockage with manual restoring
1) When an only display 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
located on both the unit and the controller.
Press once the key to deactivate the controller buzzer. Press again
the key to display the type of alarm signalled. The icon indica-
tes 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, re-
storing the default state, press again the state. 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 that concerns the only display alarms is valid, but the refrigera-
ting 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 two times the key 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.

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•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
A05 Oil level alarm Only display
A06 Air filter alarm Only display
A07 Water temperature alarm Manual
A08 Microdoor Automatic
A09 Open door Automatic
A10 Oil pressure alarm Manual
A11 Maximumm pressostat alarm Automatic
A12 High temperature alarm Only display
A13 Low temperature alarm Only display
A14 Thermal protection Automatic
A15 Low battery level Manual
A16 Start failed Manual
A17 Alternator failure Manual
A18 Pre-heat water probe failure Only display
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 alarm following procedure described in the above-mentioned paragraph and press the on/off key.
A04/11 Pressostat alarm
It occurs for a maximum or minimum pressostat intervention. The causes for the intervention of the maximum presso-
stat may be due to an inappropriate cleaning of the condenser or a slackening of the condenser fan belts, The inter-
vention of the minimum pressostat may be due to Freon leakage. The intervention produces the machine stop until
the alarm disappears.
A05 Oil level alarm
It is an only signalling alarm which does not affect the machine operation
A06 Air filter alarm
It is an only signalling alarm which does not affect the machine operation
A07 Water temperature alarm
It occurs when the radiator water temperature exceed the allowed value. It causes the diesel motor to stop. 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.

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A08 Open micro door alarm
If occurs if the door of the motor room is opened. This alarm prevents the motor start.
A09 Open door alarm
It 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 one set by the control differ beyond limit the preset on the factory.
A14 Thermal relay alarm
It occurs in case of anomalous current absorptions 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 restore 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, when the machine stops as the preset temperature (set-point) has been reached,
a battery voltage lower than 11 Volt for 10 seconds is detected, the re-start on continuous mode is forced.
A16/17 Start failure/ alternator failure
This alarm occurs if, when start attempts are completed (set in factory at 5) 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 electri-
cal operation the cause should be the alternator’s inappropriate operation . To restart the machine just reset the alarm
following the procedure described in the above-mentioned paragraph and press the on/off key.
A18 Pre-heat water probe failure alarm
It is an only signalling 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.

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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 you enter the screen where it is displayed the code relevant to the maintenance requi-
red intervention whose meaning is explained in an appropriate paragraph of this booklet.
If you press the key you will switch to the previous screen.

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1.13. Input in programming
To enter the programming perform the following procedure:
On the main, screen by pressing the key you switch to the screen
where the key is located
Press the key for five seconds and the password screen will be
displayed
Press the key and set through the number 11.
Press the key and then the key to enter the first program-
ming screen. For the navigation among the various screens use the
keys, for the shifting in
the sections press the
keys. To select the required section, highlight it, then press the
key to access it. Press the key and you will return to the previous
screen.
1.14. List of sections
The sections in the programming branch are:
• Adjustment parameters
• De-frosting parameters
• Alarm parameters
• Switching on parameters
• Digital inputs management
• Digital outputs management
• Clock configuration
• Maintenance configuration
• Probe configuration
• Configuration
To programme the parameters, listed in the specific table, first press the keys through which you can
switch from one screen to the other, in order to identify the parameter to be modified.
Press the keys to highlight the value of the parameter to be modified, then press the key and then
keys to modify its value, confirm its modification through the key. If you press the key you
will switch to the previous screen.
1.15. Digital inputs management
If you enter this section you can display the screen. The labels located in
correspondence of each digital input from the left represent : the current
state, the logic, (active in opening “op” or active in closure “cl”), the ena-
ble “en” or disable “dis”. You can both programme the logic and enable
any input; for this purpose, starting form the initial screen identify the
input to be modified by operating on the keys through which you can switch from one screen to the other.
When the required input is identified press the keys until the parameter to be modified is highlighted; then
press the key to modify the value. Press the key and you will switch to the previous screen.