Excellence in tests and qualification of cabinets Outstanding technology based on 60 years development experience
With around twenty testing rooms, CCR is one of the best-equipped manufacturers in Europe. Most testing rooms are equipped, according to the ISO 23953 standard (refrigerated display cabinets classification, requirement and test conditions), to ensure comparable and good product performance. Besides fulfilling ISO 23953 requirements, CCR has its own internal tests, standards and requirements that each cabinet has to pass before going to market. This ensures the right quality and is reflected in robust, reliable products to maximize the lifetime of each refrigerated display cabinets.
Measuring temperature performance CCR declares the temperature performance of the cabinet, according to the ISO 23953 standard, which defines the refrigerated cabinet requirements and test conditions. ISO 23953 - Refrigerated display cabinets classification, requirement and test conditions The refrigerated display cabinets are classified according to the standard ISO 23953. This standard defines the classification, requirement and test conditions for representative refrigerated display cabinets including: the minimum size of the test room, side air-flow, light intensity, temperature and humidification control, calibrated measurements, etc. Thanks to ISO 23953, customers can compare temperature classification according to the same testing procedure for all manufacturers in Europe who strictly follow the standard. Climate room requirements and setup ISO 23953 defines exactly the requirements and tolerances of a climate room including: � Size of the room � Side airflow speed and direction relative to the cabinet � Calibration of the measurement equipment � Where to place the cabinet in the climate room � Color of room and light intensity
Example: “climate class 3” Temperature: 25 °C Rel. humidity: 60%
Temperature class – describes the temperature performance inside the cabinet The temperature performance is tested in a cabinet with product-simulation models which are called M-package. The M-package simulates thermal characteristic of meat products. Cabinet temperature performance means: � How well the cabinet holds the temperature of a chilled or frozen product – simulation models at lab climate conditions � How small the cabinet storage temperature deviation of product is – simulation models at lab climate conditions � Temperature performance is tested by simulating different operation use cases: shop closed (light off, night curtain down, no door opening) shop open and commissioning of cabinet (doors / lids long open) shop open consumer take products (regular door / lid opening) There are three main temperature class groups: Low, Medium and High temperature. These main groups are split in different temperature classes indicated by a number following the group letter: Example M2. The higher the number the higher the difference between the lowest M-package temperature and highest M-package temperature.
Muffler
Humidifier
Fan Electric Heater
Air Cooler
Muffler
Dehumidifier
Inlet Dehumidifier
Example: “Temperature Class M2” (Medium temperature class 2) Warmest M-package: max. +7°C Coldest M-package: min. -1 °C
Link between climate class and temperature class Because the temperature inside a cabinet is strongly influenced by the environment’s temperature and humidity, the temperature class is only a meaningful declaration if it is linked to a climate class. For this reason, a full cabinet declaration always consists out of climate class and temperature class. Example “3M2” (At climate class 3, the cabinet reaches temperature performance M2) 3= climate class (certain ambient test condition during testing) M2= Temperature class (specified highest and lowest M-package temperature)
Air Return
Air Discharge
Example of CCR testing room. The above picture illustrates how a climate room for testing the refrigeration equipment looks like. Climate class – describes the environment outside of the cabinet Of the several climate classes available under the standard, commercial refrigeration usually performs class 3 to measure and declare the temperature performance.
134 | Modular Line 2026
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