National Luna TB 15-18 Portable Mini Fridge Instructions
- June 5, 2024
- National Luna
Table of Contents
National Luna TB 15-18 Portable Mini Fridge
DESCRIPTION
The TB15-TB18 represents professional refrigerators. They are powered by a
12-24 VDC direct-power supply. They can be used both as refrigerators and
freezers.
They are made up of a:
- plastic external structure;
- plastic internal compartment access door;
- internal, insulated compartment, for holding products;
- compressor cooling unit;
- control panel;
- power cable.
They are also equipped with a strap, so that they can be easily transported and used even outside, after having disconnected the power cable.
TB15-TB18
DATA SHEET
MODEL
| ****
TB15
| ****
TB18
---|---|---
External dimensions (HxLxD)| 360x235x565 (mm)| 405x235x565 (mm)
Net weight| 8,2 Kg| 8,6 Kg
Installed power| 35 W| 35 W
Supply voltage| DC 12-24 V| DC 12-24 V
Electrical power (within the shell)| ****
Fuse 10A
| ****
Fuse 10A
Temperature setting| +10 to -18 °C| +10 to -18 °C
Cooling system| Danfoss BD Micro (Bd1.4F)| Danfoss BD Micro (Bd1.4F)
Refrigerant gas| R134a – CFC Free| R134a – CFC Free
Cooling| No| No
Insulation| CFC Free PU Foam| CFC Free PU Foam
INSTALLATION
- Place the refrigerator on a dry, protected surface, away from corners. Do not use the refrigerator in uncovered, outdoor areas or areas exposed to the elements.
- The refrigerator requires good ventilation. Leave a space of at least 15 cm across all its sides.
- Avoid placing the refrigerator near to a heat source, for example, a cooker, radiator or exposing it to direct sunlight.
- Do not place ice or liquids which are not sealed in containers within the refrigerator.
- Do not place hot products within the refrigerator.
ATTACHMENT OF THE REFRIGERATOR IN THE VESSEL
In order to use the refrigerator within the vessel, you must firmly fix it in
the compartment using a Kit which
includes relevant strap and brackets, supplied separately as an option.
The refrigerator is equipped with relative plug, which must be connected to
the cigarette lighter outlet. In the instance where the above mentioned cable
is not used and the supply comes directly from the vessel battery, use cables
with suitable sections and lengths (see following table).
CABLE SECTION | MAX. LENGTH CABLE METRES |
---|---|
12V | 24V |
2,5 (AWG 13) | 2,5 (8 FT) |
4 (AWG 11) | 4 (13 FT) |
6 (AWG 9) | 6 (20 FT) |
REFRIGERATOR USE
CONTROL PANEL DESCRIPTION
- Start key
- ECO/ITC modify function key
- Display
- LED function ITC active
- LED function ECO active
- Temperature decrease or scroll menu key
- Temperature increase or scroll menu key
INITIAL SWITCH-ON Press key 1 to switch on the refrigerator. The
compressor enters ON mode according to the manufacturer’s default settings.
The temperature presented on the display appears in centigrade and corresponds
with, in the case of the initial switch-on, the ambient temperature.
The ECO function automatically initiates, which is described in the following
paragraphs, and the compressor rpm value adjusts itself every 2,000
revolutions.
SETTING THE COOLING COMPARTMENT TEMPERATURE
To increase the temperature of the cooling compartment press key 7 until the
desired value appears on the display.
To decrease the temperature of the cooling compartment, press key 6 until the
desired value appears on the display.
The refrigerator will maintain this set value up until it is modified once
again.
ECO” OR “ITC” FUNCTION
The ECO or ITC functions will alternatively activate upon pressing key 2. When
one of the two functions is active, the corresponding LED, under the display,
will light up.
With the ECO function active, the refrigerator works at minimum power, in
energy-saving mode; the compressor works at 2,000 rpm.
With the ITC function active, the number of compressor revolutions is varied
according to the voltage and the cooled compartment is sub-cooled by 1°C when
compared to the set temperature.
Where the voltage is ≥ than 13 V or 26 V, the compressor sub-cools amassing
the cold air (the sub-cooling value is re-set to -1°C when compared to the
temperature selected). With the motor on, the compressor automatically works
at the maximum number of revolutions/rpm.
Where the voltage is ≤ than 12 V or 25 V (with the motor off, the compressor
draws voltage from the battery) the compressor optimises the number of
revolutions/rpm dependent on the temperature selected.
“O.C.” (OVER-COOLING) FUNCTION
It is only activated with the ITC function on and only operates according to
the following logic: where the voltage is high (vehicle motor on), the
refrigerator sub-cools 3°C when compared to the set temperature and it never
reaches sub-zero temperatures (under 0°C) where a positive/higher temperature
to 0°C is selected (that is where the appliance is used as a refrigerator and
not a freezer).
SETTINGS MENU
- The refrigerator includes a settings menu, from where it is possible to modify values and thresholds set by the manufacturer, more specifically:
- (PRO) Battery protection level
- (OFS) OFF-SET value
- (F-C) Fahrenheit or Centigrade settings
- (O-C) Over-Cooling function
To access the menu, press, with the refrigerator powered but off, keys 2-6-7
at the same time for a few moments.
To scroll through the various functions within the menu, use keys 6 and 7, to
change the parameters of the selected function, press key 2, the value will
begin to flash, set the desired value, again using keys 6 and
7. The new value will be saved.
If no keys are pressed, you will automatically exit the menu mode.
BATTERY PROTECTION LEVEL
It is possible to set three different battery protection threshold levels:
Battery protection | Display | 12V | 24V |
---|---|---|---|
MIN. | 1 Bar | 9.6 | 21.3 |
MED. | 2 Bar | 10.1 | 22.3 |
MAX. | 3 Bar | 11.1 | 24.3 |
OFF-SET VALUE
The OFF-SET value refers to the difference between the temperature inside the
cooling compartment and the temperature set and presented on the display.
It is possible to set three different OFF-SET levels dependent on the
temperature set on the display. The recommended OFF-SET value is 2°C, in order
to achieve a temperature within the cooling compartment which corresponds with
the temperatures presented on the display.
Note: we do not recommend modifying the preset OFF-SET values.
DEGREES FAHRENHEIT/CENTIGRADE
To set the temperature unit of measurement to degrees Fahrenheit or
Centigrade, activate symbols F or C
OVER – COOLING
The Over – Cooling function, described above, is set by activating symbols O
C.
FAULTS
Any operation faults will be displayed after 90 seconds and will be presented on the display with the following codes:
1| The thermostat has short-circuited or is not correctly connected to
the control unit:| R6
---|---|---
2| The compressor is blocked:| R3
3| The ventilator is sending the control unit a value which exceeds
0.6A:| R2
4| The cooling system holds too much gas and the compressor is not able
to operate at the minimum number of revolutions/rpm:| R4
5| The ambient temperature is too high:| R5
6| Insufficient voltage (Voltage below the cut-out value):| LO
7| No communication between the display and control unit, a scrolling
horizontal line appears on the DISPLAY for a few seconds, the refrigerator
turns itself off.| –
HELPFUL ADVICE
Use the product in ECO mode in the following cases:
- when the product is used as a refrigerator and, particularly, where the ambient temperature is not high;
- When the vessel motor is off
REPLENISHMENT
Avoid placing hot food in the refrigerator. Place the products so that they do
not knock against each other or break when the vehicle is in motion.
Ensure that the lid is always firmly on and reduce the time it is left open to
the minimum possible.
DEFROSTING
Defrosting must be carried out where the layer of ice is greater than 4 mm
thick.
This operation must be performed with the refrigerator off.
Do not remove the layer of ice using sharp or cutting utensils.
Wait until the defrost process has completely finished before switching the
refrigerator back on.
MAINTENANCE
Caution
Before carrying out any maintenance operations on the refrigerator, disconnect
the power cable from the plug..
CLEANING
Regularly clean the inside of the refrigerator using baking soda dissolved in
warm water.
Do not, in any case, use abrasive products, detergents or soaps; after
washing, rinse with clean water and carefully dry.
Where the refrigerator is not being used, thoroughly clean and dry the inside
in order to avoid the formation of mould or foul odours.
HELPFUL ADVICE
Where the refrigerator does not function or functions incorrectly, before contacting one of our technical assistance centres, ensure that:
- there is a power supply.
- the voltage complies with that indicated on the plate.
- the connections and poles are correct.
- the ventilation grids are not obstructed.
- the fridge unit is not placed near a heat source.
- the power supply fuse is not interrupted.
Caution
The power cable must only be replaced by qualified technical personnel and by
an n assistance body authorised by the Manufacturer.
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