LSB german_french_english 771076129 - Water Solutions

Installation, Operation and Maintenance InstructionModel LSBIf the operator can´t guarantee that, accordingmonitoring measures must be provided.Equally all seal casings, auxiliary systems of theshaft sealing, as well as heating and coolingsystems must be filled carefully.2.7.2 MarkingThe marking of the pump refers to the pumpitself. For the motor resp. further additions aseparate Declaration of Conformity, as well as acorresponding marking must be available.Example of of marking at pump:CE Ex II 2 G c T1-T.The marking shows the theoretically applicable rangeof temperature classes. The different temperatures,permitted acc. to pump design, result as shown inchapter 2.7.5. The same is valid for the drive.For a whole unit (pump, motor) with differenttemperature classes the lowest is valid.2.7.3 Rotation ControlIf danger of explosion is also existing duringinstallation, the rotation control must not becarried out by short start-up of the empty pump,to avoid undue temperature increase in case ofcontact of rotating and stationary parts.2.7.4 Operation of pumpThe pump must only be started up with fully openedsuction side and slightly opened pressure side valve.The start-up against closed non-return valve, however,is possible. Immediately after the start-up thedischarge side valve must be adjusted to the operatingpoint.Refer to chapter 6.2, as well.Operation with closed valve in suction and / ordischarge pipe is not permitted!There´s a danger, that high surfacetemperatures are developing at the pumpcasing after relatively short time, through fastheating of the liquid inside the pump.Fast pressure increase inside the pump canlead to overload and, thus, the pump can burst.In chapter 6.4.1 the minimum flow is stated. Longeroperating phases with these flows and the namedliquids don´t cause additional increase of surfacetemperature at the pump.Furthermore the references in chapter 6 of theseoperating Instructions must be taken intoconsideration.On pumps with mech. seals the permittedtemperature limits can be exceeded due to dryrun.Dry run not only can occur on insufficientlyfilled seal casing, but also because of too muchgas in the medium.Operation of the pump out of the permittedoperating range can lead to dry-run, as well.2.7.5 Temperature limitsUnder normal operating conditions the highesttemperatures must be expected at the surfaceof the pump casing and in the area of thebearings.The surface temperature occurring at pump casingcorresponds with the temperature of the pumpedliquid.In the area of lantern and motor free contact ofsurface to environment must be given for propercooling.During operation of the pump it must besecured that an overabundant sedimentation ofdust is avoided (regular cleaning), to preventheating of pump surface over the permittedtemperature.The operator of the plant must secure that thedefined operating temperature is observed. Themax. allowed temperature of the pumped liquid atsuction depends on the particular temperatureclass.The following table shows the theoretical temperaturelimits of the pumped liquid in consideration of thetemperature classes acc. to EN 13463-1.Temperature class acc.EN 13463-1Temperature class acc.EN 13463-1T4 (135°C) 135°CT3 (200°C) 140°CT2 (300°C) 140°CT1 (450°C) 140°CThe particular allowed operating temperature ofthe pump is shown in the data sheet and / or theorder confirmation resp. the type plate at thepump.2.7.6 MaintenanceFor a secure and reliable operation it must besecured by regular inspections, that the unit ismaintained competently and is kept in goodtechnical condition.Example: Function of bearings. Operation andapplication conditions are essentially responsible fortheir achievable life cycle.By regular control of the lubricant and the runningsound the danger of occurring over temperatures bybearings running hot or defect bearing seals isavoided. Refer to chapter 6.6 and 7.4.The function of the shaft sealing must be secured byregular control.If auxiliary systems (e.g. external flushing, cooling,heating) are installed, it must be checked, if monitoringdevices are necessary to secure the function.LSB 100-english page 75 Revision 02Artikel Nr. 771076129 Ausgabe 01/2010