Indel B DTNA 38N User manual

instructions for use
DTNA 38N
DTNA P3
DTNA 38N-P3_(DC)_IM_20200902

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INDEX
CHAPTER 1: INSTRUCTIONS FOR USE..................................................................................................... 2
1.1 GENERAL INFORMATION....................................................................................................................................3
1.2 WIRING SYSTEM .....................................................................................................................................................4
1.3 WIRING CONNECTIONS ......................................................................................................................................4
1.4 SETTING THE INSIDE TEMPERATURE.............................................................................................................5
1.4.1 DEFROSTING............................................................................................................................................................5
1.5 MAINTENANCE........................................................................................................................................................5
1.5.1 CLEANING .................................................................................................................................................................5
1.6 USEFUL ADVICES ....................................................................................................................................................5
CHAPTER 2: HOW TO DETECT FUNCTIONAL PROBLEMS AND FIX THEM........................................ 6
2.1 NO COOLING/NO OPERATIONS FROM COMPRESSOR AND FAN .................................................................................7
2.2 NO COOLING / COMPRESSOR AND FAN IS OPERATING......................................................................8
2.3 FORM A HOW TO FIX LAMP ..............................................................................................................................9
2.4 FORM B HOW TO SHORT CIRCUIT THERMOSTAT ON ECU............................................................... 10
2.5 FORM C HOW TO REPLACE THERMOSTAT ............................................................................................... 11
2.6 FORM D HOW TO REPLACE ECU ELECTRONIC CONTROL UNIT...................................................17
2.7 FORM E HOW TO TEST AND REPLACE FAN..............................................................................................18
CHAPTER 3: HOW TO REPLACE AESTHETICAL PARTS........................................................................20
3.1 PART 1: DOOR DTNA 38N ...............................................................................................................................21
3.2 PART 2: EVAPORATOR DOOR DTNA 38N................................................................................................ 22
3.3 PART: HANDLE DTNA 38N ............................................................................................................................ 23
3.4 PART 1: DOOR  DTNA P3 .............................................................................................................................. 24
3.5 PART: HANDLE  DTNA P3 ............................................................................................................................. 26
3.6 PART 1: DOOR PANEL  DTNA P3.................................................................................................................27
CHAPTER 4: SPARE PARTS .......................................................................................................................28
4.1 DTNA 38N  CABINET......................................................................................................................................... 30
4.2 DTNA 38N  COOLING UNIT............................................................................................................................31
4.3 DTNA P3  CABINET............................................................................................................................................ 32
4.4 DTNA P3  COOLING UNIT .............................................................................................................................. 33
4.5 SPARE PARTS LIST............................................................................................................................................... 34
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CHAPTER 1
INSTRUCTIONS FOR USE
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1.1 GENERAL INFORMATION
Indel B refrigerators guarantee performance and reliability.
Provided with a totally hermetic compressor, they oer a minimal power consumption and noise
level. All the models are extremely easy to install. They can work even if they are assembled at a
slant of up to 30°.
In orderto make sure that your Indel B refrigerator works as eciently as possible, please pay attention
to the following general instructions:
• Opening the door of the refrigerator uselessly increases the waste of energy;
• Proper ventilation of the compressor and of the condenser unit reduces the energy consumption
and also ensures the yield;
• The wiring system of the vehicle is in proper condition. Routinely check the batteries and the charge
level. Follow the instructions about the cable cross sections and the fuse connections strictly;
• Keep the inside of the refrigerator clean and dry. Remove any condensate water which might gather
in the tray under the freezer compartment;
• Keep the door of the refrigerator slightly open in order to air it out if you do not use it for a long
time, for example in winter.
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The refrigerators are pre-set for being assembled in a niche of the truck.
It is very important for the refrigerating unit, consisting of the compressor and the condenser, to be well
ventilated, with the cool air coming in from the bottom and going out from the top. You must ensure proper
ventilation of the refrigerating unit.
1.2 WIRING SYSTEM
To have the refrigerator operate with the vehicle battery, please refer to the instruction manual of the vehicle’s
manufacturer.
WIRING SYSTEM: FUNCTIONS AND FEATURES (WITH AUXILIARY BATTERY)
The electronic unit of the compressor is a piece of electronic equipment which pilots the motor of the compressor
and carries out all the controls and electrical protection of the system. Its main features are the following:
• Protection of the battery with automatic turning o of the compressor when the feeding voltage reaches the
minimum threshold (cut out)
• The compressor will start up automatically again when the voltage goes back to normal values (cut in).
TABLE FOR BATTERY SAVER TRIPPING VOLTAGES
FEEDING CUT OUT CUT IN
12V 9,6V 10,9V
1.3 WIRING CONNECTIONS
When you connect the refrigerator, you must remember the following:
1) Use cables having the proper cross section (see table) to make the feeding lines. If possible, such cables
should be without any joints on the leads which could lead to voltage drops.
2) If the wiring system of the vehicle is insucient or not properly sized for the refrigerator, connect it directly
to the battery without using intermediate wiring.
3) Any switches must have a breaking load not less than 20 A
4) Make sure the polarity is right: connect the red cable to the positive terminal (+) and the black cable to the
negative terminal (-).
5) Protect the feeding line with a 15 A fuse.
CROSS SECTION CABLES (mm2)MAXIMUM LENGHT OF CABLES IN METRES
12V
2,5 (13 awg) 2,5 (8 ft)
4 (11 awg) 4 (13 ft)
6 (9 awg) 6 (20 ft)
10 (7 awg) 10 (33 ft)
WARNING
Never connect bare electric wires, and use only connectors of a size suitable to the cross section of the cable
being used.
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1.4 SETTING THE INSIDE TEMPERATURE
The refrigerators are provided with a manual thermostat. Turn it clockwise to lower the temperature,
and turn it counterclockwise to raise the temperature and activate the ON-OFF switch in its end
position. The knob of the thermostat is located inside the refrigerator, under the lamp.
1.4.1 DEFROSTING
Defrosting must be carried out when the ice layer is thicker than 4 mm.
Set the thermostat at the OFF position. While defrosting, keep food and beverages in a cool place.
Do not use any sharp metal object to remove the ice or frost. Do not start the refrigerator up again
until it is completely defrosted and dry. Also empty the main tray.
1.5 MAINTENANCE
WARNING
Before every maintenance operation, disconnect the power supply from the electric outlet. In case
of refrigerator wrong operation, contact the Indel B Service Center.
1.5.1 CLEANING
Periodically clean the inside of the refrigerator using sodium carbonate dissolved in lukewarm water.
Avoid using abrasive products, cleaners or soaps. After cleaning, rinse with fresh water and dry with
care. When you are not using the refrigerator, clean and dry its inside to prevent mould and bad
smells formation.
WARNING
Do NOT wash the refrigerator drawers and parts in a Dishwasher.
1.6 USEFUL ADVICES
If the refrigerator does not work, or if it works incorrectly, before referring to our after sales service
(Customer Care Dept- Indel B North America - ph 502-867-2888), make sure that:
a) refrigerator has correct voltage input.
b) the circuits are connected correctly.
c) the ventilation grids are not obstructed.
d) the refrigerating unit is not near a source of heat.
e) the refrigerator fuse is not blown.
f) freezer/evaporator has not been punctured or damaged. This type of damage is considered
to be non-warrantable.
1st - DTNA Service Bulletins, pertaining to Indel B refrigerators, should be reviewed prior to
replacing any components.
2nd- If nothing is running or only fan is running, using a volt meter on 20v DC setting, check
voltage at fridge with truck o and fridge o . What is voltage? Turn fridge on and see
if voltage drops below 11 volts. If yes, there is most likely a wiring issue with the truck. If
no, proceed to next step (for details go to Chapter 2 “How to detect functional problems
and x them”).
3th -If fan does not run, bypass thermostat wires on ECU terminal C to T. If fan now runs, also
check if compressor is now running and if yes replace thermostat.
4th- If fan runs and compressor does not, change ECU and check if compressor is now running.
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CHAPTER 2
HOW TO DETECT FUNCTIONAL
PROBLEMS AND FIX THEM
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2.1 NO COOLING/NO OPERATIONS FROM COMPRESSOR AND FAN
WARNING
Before replacing the refrigerator, prior be sure that voltage is ok and trouble shooting steps described in
these forms have been followed!
Not ok
Ok
Ok
Replace fuse. If fuse continues to
blow, diagnose vehicle wiring.
Ok
Replace fan
Replace thermostat.
Turn Cab Load Disconnect Switch to ON and
check refrigerator fuse.
Ok
Check that thermostat is switched ON. Switch
it to the maximum setting. Wait 60 seconds to
see if compressor starts to work (a delay of 60
seconds is normal after a reset).
Not ok
Remove refrigerator from cabinet to gain
access to electrical connections.
Check if cables are connected properly to
ECU. Measure the input voltage to refrigerator
(must be above 11v.)
Ok
Disconnect fan cables “+” and “F” from ECU.
Wait 60 seconds to see if compressor starts
to work
Not ok
Disconnect circuits from ECU terminals "C"
and "T". Make a jumper wire and bridge the
"C" and "T" terminals toghether
Not ok
Replace ECU.
Not ok
If all of the above steps have been followed,
and refrigerator still does not operate, replace
refrigerator.
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2.2 NO COOLING / COMPRESSOR AND FAN IS OPERATING
WARNING
Before replacing the refrigerator, prior be sure that voltage is ok and trouble shooting steps described in these
forms have been followed!
Check that thermostat is switched ON.
Switch it to the maximum setting.
Ok
Check if the temperature on the evaporator
after 30 minutes in below 32°F
Not ok
Check if the freezer/evaporator has not been
punctured or damaged
Ok
Remove refrigerator from cabinet to gain
access to cooling unit.
Disconnect circuits “C” and “T” from ECU.
Make a jumper wire and bridge “C” and “T”
terminals at ECU.
Not ok
If all of the above steps have been followed,
and refrigerator still does not operate,
replace refrigerator.
This type of damage is considered to
be non-warrantable
Replace thermostat.
Not ok
Ok
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2.3 FORM A HOW TO FIX LAMP
The interior lighting is installed at the top. Check to make sure that a proper 12 V light bulb
has been installed, based on the voltage of the electrical system to which the refrigerator has
been connected. The consignment includes a 12 V light bulb (Max power: 3 W). In order to
replace the light bulb, remove the plastic rivet, slide the lighting unit’s glass down using the
appropriate lever. Replace the light bulb and to return the lighting unit to its original state.
Time: 5 minutes
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2.4 FORM B HOW TO SHORT CIRCUIT THERMOSTAT ON ECU
Time: 3 minutes
Disconnect the brown and the blue wire from ECU on positions C, P and T (1)
Make a bridge between C and T (2)
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2.5 FORM C HOW TO REPLACE THERMOSTAT
Time for repair: 35 minutes
Remove the plastic rivet on the left of the lamp holder
Unscrew evaporator from cabinet
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Unscrew the lamp holder (3 screws)
Remove the thermostat knob pulling it out
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Disconnect the wires from thermostat
Unscrew the nut of the thermostat
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Unscrew the support of the thermostat
Unscrew the xing supports of the evaporator
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Pull out the support of the thermostat sensor
Thermostat sensor support
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Remove the rubber protection pipe
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2.6 FORM D HOW TO REPLACE ECU (ELECTRONIC
CONTROL UNIT)
Time: 15 minutes
Remove all the wires from the ECU
Unscrew the ECU and remove it
Remove the ECU connector from the compressor with the help of a screwdriver
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2.7 FORM E HOW TO TEST AND REPLACE FAN
Time: 30 minutes
Cut the plastic strip
Disconnect the wire from + and F
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