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DIN SPEC 74111:2015
Road vehicles - R744-Air-conditioning systems - Accumulator-Dryer-Filter-Modules; Text in German and English
The DIN SPEC describes the requirements for quality, strength and service life, and the associated tests for combined ACCUs with internal heat exchangers that are operated in refrigeration circuits using refrigerant R744, and it also specifies the appropriate tests.
Deutsches Institut für Normung [din]