During thermometric tests for thermal disinfection, in order to avoid pre-heating the load, the washing stages shall be disabled or the controlled temperature at the start of the disinfection stage reduced to be at or below the lowest temperature specified for the washing stage.
NOTE This creates the “worst case” conditions with which the disinfection stage can be expected to cope and ensures that disinfection conditions will be attained in the event of a failure of the washing stage.
The disinfection stage may be combined with the washing stage or the rinsing stage in some WDs (see also 4.1.3).
The load under test shall consist of a reference load (see subsequent parts of ISO 15883) or a performance qualification load of discrete items of the type which the WD is intended to process, or of surrogate devices used to simulate such load items.
The load shall be contained on, or within, load carriers of the type intended for use with the load.