Safety Devices Measures such as the following are for the safety of the operating personnel: electrical connection with a protective conductor (operating mode S1) and an earthing plug,fine-wire fuse (slow-blow), “Hot Surface" label on the pump body - warning notice completely enclosed casing, identification WEEE,glass components with a transparent plastic coating which protects them against bursting and cracking, cooler isolated. The Laboratory-Vacuum-System must not be operated without these elements. Meaning of the Warning Notes Take note of the warning notices. They are in the following box: Hazard which may lead to serious injuries or material damage. Product Standards, Safety Regulations Laboratory-Vacuum-System meet the following product standards: