test values with the required maximum or minimum values shall be summarised in a table extended according to EN 12255-15. 

Failure to pass the verification of mechanical equipment performance 

1. For exceeding the required maximum pressure loss over the diffuser grids: 

If the test results reveal that the pressure loss over the complete diffuser-arrangement or individual sections (incl. potential build-in check valve) exceeds the required maximum values at maximum duty conditions, the Contractor shall preferably redesign the diffuser system, replace the diffusers, or increase the number of diffusers or on any other way remedy the defect. 

2. Too low SSOTE: 

If the test results reveal that the required minimum SSOTE over the complete diffuser-arrangement or individual sections is less than the required values, the Contractor shall preferably redesign the diffuser system, replace the diffusers, or increase the number of diffusers or on any other way remedy the defect. 

