13. Approval of the installation

13.1 The buyer is obligated to approve the installation as soon as its completion has been indicated and a contracted testing has taken place.

13.2 Should a marginal defect exist, the buyer cannot reject the approval if SD-Technologies accepts its obligation explicitly to acknowledge the defect.

13.3 If the approval is delayed without the fault of SD-Technologies, the approval is automatically concluded two weeks after completion has been indicated.

13.4 By approving the installation, the liability of SD-Technologies omits for recognizable defects if the buyer does assert a certain defect.