5
TECHNICAL NOTES
Specic versions with different internal temperature setting are available for each
container size, (ask for data sheet of single models for specic values):
• NDN: cooling function, internal temperature down to 0°C (with +32°C ambient)
NDH: automatic cooling / heating function, internal temperature from 0°C to
+30°C (with ambient temperature from -20°C to +32°C)
• NDH: automatic cooling / heating function, internal temperature from 0°C to
+30°C (with ambient temperature from -20°C to +32°C)
• FDN: freezer function, internal temperature down to -21°C (with +32°C ambient)
• FDH: automatic cooling / heating function, internal temperature from -21°C to
+30°C (with ambient temperature from -20°C to +32°C)
• XFDN: deep freezing, internal temperature down to -30°C or -35°C, according
to model (with +32°C ambient)
The coldtainers operate via direct current compressors connected to a 12-24Vdc
or 12Vdc power source (according to model). The high quality SECOP BD series
direct current compressors used in the units are designed to withstand vibrations,
also in case of use in off-road conditions, and can work with an inclination of up
than 30°.The units shall be switched off if positioned at an angle of more than 30°.
After being returned to a level position, allow to rest for approximately 30 minutes
before switching on.
SECOP compressors have built-in protection systems against overload and start
failure, fan overload, reverse polarity, overheating. When overload protection is
activated, the compressor enters a cycle in which it attempts to start at approximately
60 second intervals until a successful start is achieved. When overheating protection
is activated (i.e. ambient temperature exceed ab. +55°C) the compressor will restart
automatically approximately 60 seconds after the temperature of the electronic has
cooled down to a safe value.
If a voltage outside the specied range is applied to the electronic unit, the
compressor does not start, or it stops if the voltage limit is exceeded during
operation. The compressor will restart automatically approximately 60 seconds
after the supply voltage has reached the reset voltage within the range in question.
If a fan is installed, it will start to operate without a delay as soon as the reset
voltage is reached.
Maximum operating ambient temperature is ab. +55°C (with degraded
performances). Minimum operating ambient temperature (for NDH and FDH
models) is -20°C.
The internal temperature displayed by the digital controller is the one sensed in the
vicinity of the probe area. The temperature in other points of the container can vary,
after stabilization, normally in a ± 2°C range.
The NDH and FDH versions have an internal fan for a better internal air distribution.
An “internal fan” kit is available as accessory for the NDN, FDN and XFDN versions.
Always pre-condition the internal temperature of the unit before use. Do not place
