AEJ-C/AES-C/PLJ-C-BA-e-1514 173.4 Monitoring of Test ResourcesIn the framework of quality assurance the measuring-related properties of thebalance and, if applicable, the testing weight, must be checked regularly. Theresponsible user must define a suitable interval as well as type and scope of this test.Information is available on KERN’s home page (www.kern-sohn.com with regard tothe monitoring of balance test substances and the test weights required for this. InKERN's accredited DKD calibration laboratory test weights and balances may becalibrated (return to the national standard) fast and at moderate cost.4 Basic Safety Precautions4.1 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.4.2 Personnel trainingThe appliance may only be operated and maintained by trained personnel.5 Transport and storage5.1 Testing upon acceptanceWhen receiving the appliance, please check packaging immediately, and theappliance itself when unpacking for possible visible damage.5.2 Packaging / return transport Keep all parts of the original packaging for a possibly required return. Only use original packaging for returning.