Desmi H Series Operation And Maintenance Instructions

Contents

Desmi H Series Operation And Maintenance Instructions Manual pdf 11 page image

______________________________________________________________________________DESMI Pumping Technology A/S 11Tagholm 19400 Nørresundby – DenmarkTel: +45 96 32 81 11 Fax: +45 98 17 54 99E-mail: desmi@desmi.comwww.desmi.comFAULT CAUSE REMEDYThe pump has no ortoo low capacity1. Wrong direction ofrotation2. Piping system choked3. The pump is choked4. Suction line leakspump takes air5. Suction lift too high6. Pump and piping systemwrongly dimensionedChange direction ofrotation to clockwisewhen viewed fromshaft end (thedirection of the arrow)Clean or replaceClean the pumpFind the leakage,repairthe fault, non-returnvalve not submergedCheck data sheetQ/Hcurve and NPSH orcontact DESMIAs 5The pump uses toomuch power1. Counter-pressure toolow2. The liquid is heavierthan water3. Foreign body in pump4. Electric motor isrunning on 2 phasesInsert orifice plate orcheck valve/ContactDESMIContact DESMIDismantle the pump,remove the causeCheck fuses, cableConnection, andcableThe pump makesnoise1. Cavitation in pump Suction lift too high/Suction line wronglyDimensioned/LiquidTemperature too high11. INSPECTION AND MAINTENANCEInspect the shaft seal for leaks at regular intervals.- Before inspection of a pump without guard check that the pump cannot be startedunintentionally.- The system is to be without pressure.- The repairman must be familiar with the type of liquid which has been pumped aswell as the safety measures he is to take when handling the liquid.