8 VHP-T-BA_IA-e-16114.3 WarrantyWarranty claims shall be voided in case• Our conditions in the operation manual are ignored• The appliance is used outside the described uses• The appliance is modified or opened• Mechanical damage or damage by media, liquids, natural wear and tear• The appliance is improperly set up or incorrectly electrically connected• The measuring system is overloaded4.4 Monitoring of Test ResourcesIn the framework of quality assurance the measuring-related properties of the displayunit and, if applicable, the testing weight, must be checked regularly. The responsibleuser must define a suitable interval as well as type and scope of this test. Informationis available on KERN’s home page (www.kern-sohn.com with regard to themonitoring of display units’ test substances and the test weights required for this. InKERN’s accredited DKD calibration laboratory test weights and display units may becalibrated (return to the national standard) fast and at moderate cost.5 Basic Safety Precautions5.1 Pay attention to the instructions in the Operation Manual Carefully read this operation manual before setup andcommissioning, even if you are already familiar with KERN balances. All language versions contain a non-binding translation.The original German is binding.5.2 Personnel trainingThe appliance may only be operated and maintained by trained personnel.