The replaceable solid core filters are classified as “Vessels” in the sense of PED Directive 2014/68/EU, Article 2, paragraph 2 and are subject of Article 4, paragraph 1, letter (a), of the same Directive. All the product range is suitable for use with refrigerant R744 (CO2), classified in Article 13, paragraph 1, letter (b), of Directive PED 2014/68/EU as part of Group 2, therefore not toxic, not inflammable and not explosive fluid and indicated in A1 Group of Annex E of standard EN 378-1.
The function of these filters is to protect the system from solid contaminants, absorb moisture to prevent the formation of acids that damage the compressor, avoid the formation of ice and the consequent reduction in the efficiency of the system.
This series of filters are made entirely of steel; a particular feature is the connections made in AISI 304 stainless steel. All the parts of the body are MIG welding with specific material. If it’s needed to replace the cores, the filtering system, including the filter tube of stainless steel AISI 430, it’s easier to replace thanks to a handle ergonomic grip. The passage of the fluid takes place in parallel and therefore, in the case of multiple filters cartridges, the pressure drop does not increase with the number of cartridges.
To allow easy extraction of the filtering system the choice of installation location must contemplate the distance ‘K’ (see technical datasheet). Considering the importance of filters inside the refrigeration system, it’s suggested to define a maintenance program to verify the efficiency and in case of necessity to substitute cartridges to ensure the correct functioning of the system.