ISO 14847 pdf download

ISO 14847 pdf download.Rotary positive displacement pumps — Technical requirements 1 Scope This standard specifies the technical requirements, other than safety and testing, for rotary positive displacement pumps and rotary positive displacement pump units. This standard does not apply to rotary positive displacement pumps for fluid power applications. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. 3 Definitions For the purposes of this standard the definitions given in prEN 12723 apply together with the following: 3.1 rotary positive displacement pump: A machine in which liquid is trapped in confined volumes and transported from an inlet port to an outlet port by a rotational movement of the pumping element or elements. NOTE: According to EN 809, pumps are defined as being terminated by their inlet and outlet branches as well as, in general, by their shaft ends without couplings. 3.2 rotary positive displacement pump unit: An assembly of a rotary positive displacement pump and its driver, with necessary transmission and structural supporting elements terminating at the connections for the inlet and outlet branches and at the energy supply to the driver. 4 Information and requirements to be confirmed, agreed and documented 4.1 Purchaser information The purchaser shall provide the supplier with the information necessary for the proper selection of a pump or pump unit. To facilitate this the data sheet included as annex A can be used. The selection shall consider all received and relevant information on performance requirements, environment and intended operating conditions. Any missing information necessary for pump selection shall be requested by the supplier. The purchaser’s information shall include specification of options and items for special agreement according to this Standard and, where applicable, requests for deviations from this Standard. Clauses of this Standard referring to options and special agreements are listed in 4.2 and 4.3. 4.2 Optional requirements If the purchaser wishes to include any of the optional requirements given in this standard such requirements shall be specified and documented at the time of enquiry and confirmed at the time of order....