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Multitec Specialnotes regarding cooled mechanicalseals 6 Commissioning, start-up / Shutdown (sealcode 64) Instructions forboilerfeed applications - Ifthepumpisequippedwithacooledmechanicalseal,vent Limitvalues forboiler feed water and condensate when using thesealchamberbyopeningthescrewed plug903.11 bya castiron pump parts: pH value 9.0 (target:9.3) quarterturn,then re-tighten. O content≤0.02 ppm. 2 These values must be ensured underall operating conditions Pump sizes before entry into the pu
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Multitec Ifthepumphastoremainoperationalduringshutdownperiods, 6.1.3 Contactguard it must be started up regularly for atleast 5 minutes (see also In compliance with health and safety regulations the 6.3): pump mustnotbe operated withoutacoupling guard.If - fire-fighting pumps atleastonce a month the customer specifically requests not to include a coupling - drinking waterpumps atleastonce in 48 hours guard in ourdelivery,then the operatormustsupply one. - stand-by pumps atleastonce a week 6.1.4
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Multitec 6.2.2 Switching frequency Prolongedshutdownperiodsshould beavoided inthe caseof The permissible number of start-ups in a given period of time pumps in material variants 10, 13, 20 and 21 (cast-iron depends on the circumstances prevailing in the plant and the variants), particularly if the pumps are handling aggressive operating conditions. Overloading of the motor may generally waterqualities(highoxygencontent).Insuchcases,thepump result in: should remain filled, and the operation check
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Multitec 7.2.2 Bearings and lubrication 7 Servicing / maintenance On grease-lubricated units, therolling elementbearings ofthe 7.1 Generalinstructions MTC32 and the non-drive end rolling element bearings of the The operatoris responsible for ensuring that allmaintenance, MTC50andMTC65indesignCandDarelubricatedforlifeand inspection and installation work be performed by authorized, donotrequirere-lubrication.Forthisreason,nolubricatingnip- qualified personnel who are thoroughly familiar with the p
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Multitec Oilquality /Oilchange 7.2.3 Shaftseal Quality:ISO VG 46. Mechanicalseal: The first oil change shall be carried out after 300 operating The mechanicalsealis maintenance-free. hours,the following ones every 3000 operating hours. Gland packing: Unscrewthescrewedpluginthere-fillholeandinthedrainhole. Thenutsattheglandcovermustonlybetightenedslightly.The Allow the bearing housing to drain completely, then plug the glandcovermustbeatrightanglestotheshaft.Afterthepump drain hole again. has bee
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Multitec 7.3.3 Dismantling the bearings The sections below describe partial dismantling (bearings, Shaftin 1.4021 /1.4462 seals,etc.)and complete dismantling ofthe pump unit. 7.3.3.1 Dismantling the non-drive-end bearings Plain bearing Theplainbearingisremovedwithoutdismantlingthehydraulic section ofthe pump. Axialsuction nozzle: Fig.19 Rolling elementbearings: Ifthe pump is oil-lubricated,drain the oilbefore dismantling. - Unscrew bolts 901.4 or914.5 and remove non-drive-end bearing cover361.1
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Multitec 7.3.3.2 Dismantlingthedrive-endrollingelementbearings The rotating unit is adjusted axially by means of Caution N.B.:The ceramic bearing installed atthe non-drive end need spacers 551.1. When reassembling the pump not be dismantled in order to remove the drive-end rolling after partial dismantling (bearing or seal replacement), the elementbearings.Ifthe pump is oil-lubricated, the oil mustbe samespacerdiscs551.1mustbemountedonthebearingside drained before dismantling. to reproduce the o
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Multitec 7.3.4 Dismantling and replacementofshaftseal 7.3.5 Dismantling the mechanicalseal Gland packings 7.3.5.1 Dismantling the mechanicalseal 7.3.4.1 Replacing the packing rings - Remove the bearing as described in sections 7.3.3.1 and Access to packing rings without removing the bearing or the 7.3.3.2. lantern: - On grease-lubricated pumps,pullV-ring 411.6 offspacer sleeve 525.1. - Undo both nuts 920.3 and pullgland cover452 outofseal - Remove O-ring 412.10. housing 441.1. - Pulloffspacersle
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Multitec 7.3.5.2 Removing an air-cooled mechanicalseal 7.3.5.3 Removinga water-cooledmechanicalseal(seal (sealcode 64) code 64) Fig.33 N.B.: This mechanical seal design is used for application Fig.35 temperatures from 140 to 200C and Multitec sizes 32 to 100. ThepumpshallonlybecoupledtoamotorwithenclosureIP55. Note:This mechanicalsealdesign is used fortemperatures - Remove the bearing as described in sections 7.3.3.1 and from 140 to 200C and sizes 125 and 150 (optionalforsizes 7.3.3.2. - Remov
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Multitec 7.3.6 Dismantling the hydraulic system 7.3.7 Recommended spare parts stock for2 years - Remove the bearingsas describedin sections7.3.3.1 and continuous operation 7.3.3.2 and the shaftseals as described in sections 7.3.4 We recommend to replace various wear parts, Caution and 7.3.5. e.g. rolling element bearings, sealing elements, If possible, place the hydraulic system in vertical position and circlips, etc.) whenever the hydraulic system has been startdismantling itfrom the discharge
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Operating instructions
1777.8/7-10 G3 Multitec
High-pressure pumps in
ring-section design
Works No.: __________________________________
Type series: __________________________________
These operating instructions contain fundamental
information and precautionary notes. Please read
the manual thoroughly prior to installation of unit,
connection to the power supply and commissioning. It is
imperative to comply with allother operating instructions
referring to components ofthis unit.
This manualsha
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Multitec Contents Page Page 1 General 4 6.3.1 The unit/pump remains installed;periodic check ofoperation 13 2 Safety 4 6.3.2 The pump is removed from the pipe and 2.1 Marking ofinstructions in the manual 4 stored 13 2.2 Personnelqualification and training 4 6.4 Returning to service afterstorage 13 2.3 Non-compliance with safety instructions 4 7 Servicing /maintenance 14 2.4 Safety awareness 4 7.1 Generalinstructions 14 2.5 Safety instructions forthe operator/user 5 7.2 Servicing /inspection 14 2
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Multitec Index Section Page Section Page Adjusting dimensions for coupling Reassembly ofhydraulic system 7.4.2 21 alignment,pump sizes 32 to 65,versions Recommended spare parts stock for2 E,Ex,F,Fx,V,Vx 31 yearscontinuous operation 7.3.7 20 Aligning the pump /drive 5.3.1 8 Repairs 7.5.2 25 Applications 4.4 6 Returning to service afterstorage 6.4 13 Bearings 7.4.4 22 Safety 2 4 Bearings and lubrication 7.2.2 14 Safety awareness 2.4 4 Checking the direction ofrotation 5.5.3 10 Safety instructions
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Multitec isusedtointroducesafetyinstructionswhosenon-observance 1 General may lead to damage to the equipmentand its functions. The Multitec pump has been developed in accordance with Instructions attached directly to the machine,e.g. state-of-the-arttechnology;itismanufacturedwithutmostcare - arrow indicating the direction ofrotation and subjectto continuous quality control. - markings forauxiliary connections Theseoperatinginstructionsareintendedtofacilitateoperation ofthe pump and help in com
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Multitec 2.5 Safety instructions forthe operator/user - Anyhotorcoldcomponentsthatcouldposeahazardmust be equipped with a guard by the operator. - Guards which are fitted to preventaccidentalcontactwith movingparts(e.g.coupling)mustnotberemovedwhilstthe unitis operating. - Leakages(e.g.attheshaftseal)ofhazardousfluidshandled (e.g.explosive,toxic,hot)mustbecontainedsoastoavoid anydangertopersonsortheenvironment.Allrelevantlaws mustbe heeded. - Electricalhazardsmustbeeliminated.(Inthisrespectrefer
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Multitec 4.2 Designation 4 Description of the product and Multitec A 32 /8E -2.1 12 .65 (SP) accessories Type series Installation type /pump version 4.1 Technicalspecification Discharge nozzle DN No.ofstages /impellercombination Multistagecentrifugalpumpsinring-sectiondesignwithsuction Hydraulic system impellerforlow NPSH value (exception:MTC 32). Materialvariant Horizontaldesign, baseplate Shaftsealcode mounted Code forspecialvariants (optional) 1 casing entry, drive end 1 rolling element beari
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Multitec 5.3 Installing the pump/unit 5 Installation at site Beforeplacingthebaseplateonthefoundation,makesurethat 5.1 Safety regulations /Specialinstructions the concrete foundation is clean and smooth. The complete Electrical equipment operated in potentially pump unit must be aligned horizontally with the help of a explosive atmospheres must comply with the precision spiritlevel. relevant explosion protection regulations. This is It is imperative that the factory-aligned unit mounted on the b
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Multitec 5.3.1 Aligning the pump /drive For fluid temperatures of 120C and higher, the Caution footboltsholdingthepumponthebaseplatemust Coupling guard be tightened to the following torques: In compliance with health and safety Caution Tightening torque regulations the pump must not be operated without a coupling guard / a guard on the drive lantern. If the MTC Thread Strength Drive Non-drive customerspecificallyrequestsnottoincludeacouplingguard/ end end lanternguardinourdelivery,thentheoperat
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Multitec 5.4 Connecting the piping Max.permissible pipeline forces (materialcodes 10,11,12,13) Suction lift lines shall be laid with a rising slope towards the pump and suction head lines with a downward slope towards Nom. nozzlediameter (DN) the pump,to preventthe formation ofairpockets. 32 50 65 80 100 125 150 200 250 With shortpipelines,the nominaldiameters should be atleast Vertical nozzle, at a right angle to the shaft (N ) equalto the nominaldiameters ofthe pump nozzles. Forlong pipelines,
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Multitec Y configuration (high voltage) 5.4.1 Vacuumbalance line Whereliquidhastobepumpedoutofavesselundervacuum,it isadvisabletoinstallavacuumbalanceline.Thislineshallhave aminimumnom.diameterof25mmandmustextendabovethe highestpermissible liquid levelofthe vessel. An additional pipeline fitted with a shut-off valve from the pumpdischargenozzletothebalancelinefacilitatesventing ofthe pump before start-up. Fig.13 Connection diagram forthree-phase motors, Y configuration 5.5.2 Setting the time
