Desmi H Series Operation And Maintenance Instructions

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Desmi H Series Operation And Maintenance Instructions Manual pdf 12 page image

______________________________________________________________________________DESMI Pumping Technology A/S 12Tagholm 19400 Nørresundby – DenmarkTel: +45 96 32 81 11 Fax: +45 98 17 54 99E-mail: desmi@desmi.comwww.desmi.com11.1 DRAINING THE PUMPWhen the piping system has been drained, note that there is still liquid in the pump.Remove the liquid by dismantling the pipe plug (75) at the bottom of the pump.11.2 BEARINGSThe pump is equipped with ball bearings with a nominal life of 25,000 working hours whendirect coupled to electric motor, whereas the nominal life with overhanging V-belt drive isabout 10,000 working hours. The bearings are lubricated for life and require no attention butare to be replaced in case of noise or bearing wear.12. REPAIRS12.1 ORDERING SPARE PARTSWhen ordering spare parts please always state pump type and serial No. (appears from thename plate of the pump). See also spare parts drawing with item Nos.13. OPERATING DATAThe following working pressures are allowed:PUMP H-40-160 H-50-160 H-65-160 H-50-200 H-65-200 H-80-200PRESSUREmWC 80 80 80 110 110 110The above-mentioned max. working pressure is NOT valid for pumps approved by aclassification society. Pumps approved by classification societies have been pressure testedaccording to the requirements of these societies, i.e. a test pressure of 1.5 x the permissibleworking pressure. The test pressure is stated in the test certificate and stamped into thedischarge flange of the pump.The powers stated in the table below are the highest possible absorbed by the pump,whereas the min./max. values for flow and pressure indicate DESMI's recommendedoperating range for the pump.