The spare part consists of a class H13 coalescing filter cartridge and a class M6 sock. The service life of the replacement is over 3000 hours if used correctly. The Clogged Filter Detection Device, installed on the blast chiller's electrical panel, warns the user, by flashing, that about 15% of the filters are still operational, so there is time to order a replacement. This replacement is done by opening the door, unscrewing the cartridge retaining system and removing the filter block. The new cartridge is fitted by repeating the operation in the reverse direction.