Maintenance and Servicing 7.1 Gener

Maintenance and Servicing 7.1 General Requirements Repairs of the Laboratory-Vacuum-Systems may only be performed by the manufacturer or authorized workshops. The prerequisites are a complete and factually correct damage report, and a clean and, if necessary, a decontaminate device. The operator may perform maintenance work to the extent indicated below: 7.2 Maintenance Performed by the User Only perform the work that is described here, and that which is permitted to be done by the user. All other maintenance and service work may only be performed by the manufacturer or a dealer authorized by him. Beware of the pump parts being possibly contaminated by hazardous substances. Wear protective clothing if there is contamination. 7.2.1 Maintenance of the Diaphragm Pump • Check the pump daily for unusual running noises and heat building up on the surface of the pump. • We recommend changing the diaphragm after 10,000 operating hours. The user may specify that the exchange be made earlier, depending upon the application process. • Check the electrical and vacuum connections daily. Before opening the unit unplug it from the mains. Scope of permissible work: • Inspect the pump chambers, diaphragms and valves, • Deposits in the inside of the pump must be cleaned out, • Change the diaphragms, valves and seals. Tools required: Tool kit: Order no. 402107, consists of: • Order no. 826801-4 • Order no. 826801-2 Cross-head screwdriver, size 2, Open spanner, size SW 14.