EvaKool DOWN UNDER Series, Service Manual

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15
What is Climate Class?
Refrigerators are designed to work under certain climate conditions which are rated by
climate classes . It indicates the minimum and maximum temperature limits, within which
the refrigerators are able to operate properly .
All fridges and freezers are rated with 4 main climate classes as below:
1.
SN (Subnormal) suitable for use under ambient temperature range of 10°C-32°C .
2. N (Normal) suitable for use under ambient temperature range of 16°C-32°C .
3. ST (Subtropical) suitable for use under ambient temperature range of 18°C-38°C .
4. SN (Tropical) suitable for use under ambient temperature range of 18°C-43°C .
Note: These abbreviations are conventional because they are regulated by international
standards (IEC Clauses) and do not depend on a maker or a country of production.
Some fridges and freezers are developed with combined climate classes to allow the
operation within a wider temperature range, like some outdoor locations or special
regions . For example:
1. N - ST suitable to operate under temperatures ranging from 16°C - 38°C (61°F-100°F) .
2. SN - T suitable to operate under temperatures ranging from 10°C - 43°C (50°F-109°F) .
Why is it so important to choose a fridge with appropriate Climate Class?
Not all refrigerating appliances are suitable for all ambient temperature ranges . Very few
people would check or even know about the characteristics of climate classes, but it is
really important to think twice before the purchase . Here are some reasons:
• If a fridge keeps running under the climate conditions that it is not intended for, it will
consume much more energy to reach the required inside temperature .
• The fridge will not cool the inside product sufficiently, which will lead to excessive
condensation .
• The viscosity of the oil in the compressor will increase if it works at ambient temperature
under 10°C (50°F), and with the loss of fluidity, the compressor could be damaged easily .
• The lifespan of the refrigerators will decrease significantly .