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Desmi MVA Series Operation And Maintenance Instructions

Vertical multistage centrifugal pump
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OPERATION AND MAINTENANCE INSTRUCTIONS
Vertical Multistage Centrifugal Pump
DESMI Pumping Technology A/S
Tagholm l, DK-9400 Nørresundby, Denmark
Series: MVA, MVS
Tel.: +45 96 32 81 11
Fax: +45 98 17 54 99
E-mail:
desmi@desmi.com
Internet:
www.desmi.com
Manual:
Language:
T1536
English
Revision:
A1(03/20)

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  • Page 1 OPERATION AND MAINTENANCE INSTRUCTIONS Vertical Multistage Centrifugal Pump Series: MVA, MVS DESMI Pumping Technology A/S Tagholm l, DK-9400 Nørresundby, Denmark Tel.: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com Internet: www.desmi.com Manual: Language: Revision: T1536...

  • Page 2: Table Of Contents

    10.1 TRANSPORTATION ........................... 16 10.2 STORAGE ..............................16 11. TROUBLE SHOOTING ..........................16 12. SIZE DIAGRAMS ............................18 _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com...
  • Page 3 13. EXPLODED VIEWS ............................. 27 _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com...

  • Page 4: Notes

    In no cases, shall the extent stated in the data sheets shall be exceeded. In case that one or more of the following problems occur, this warranty becomes invalid: _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark...

  • Page 5: Product

    Silicon carbide Normally configured silicon carbide configuration Hard alloy Hard alloy is optional _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com...

  • Page 6: Rated Current

    4.1 GENERAL MVA, MVS vertical multistage centrifugal pumps are developed with the most advanced technology. It is carefully manufactured and subject to continuous quality control. DESMI assumes no liability for any damage and injury caused by failure to comply with operational instructions described in this manual or by negligence during product installation, operation and maintenance.

  • Page 7: Safety Measures

    It is strongly suggested that an air leakage pan shall be placed under the pump. Warning Once work is done, immediately re-install and/or re-start all safety-related protective devices. _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com...

  • Page 8: Environmental Aspects

    Max pressure: 33bar • Medium PH: 3 - 9 • Highest ambient temperature: +40°C (please refer to 6.1 or consult DESMI) • Max altitude: <=1000m (please refer to 6.1 or consult DESMI) 5.4 WORKING MEDIUM A thin, nonflammable and non-explosive liquid, contains no solid particles or fiber. The liquid causes no chemical corrosion to pump materials.

  • Page 9: Technical Parameters

    If the result of calculated H is positive, it means the suction height at the suction side equals to “H”m. If the result is negative, at least positive Hm pressure is required at the inlet to avoid _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø...

  • Page 10: Pressure And Temperature

    As for size, refer to size diagrams of all models As for weight, refer to package labels 6.8 NOISE LEVEL Electric pump noise _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com...

  • Page 11: Precautions Before Installation And Operation

    Install pipes to avoid air lock, especially at the inlet side of the pump. _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com...

  • Page 12: Check Before Pump Startup

    _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark...

  • Page 13: Startup Steps

    3. Check rotating direction of the motor 4. Start up the motor 5. Loosen the discharge valve and slowly open the outlet valve _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com...

  • Page 14: Performance Parameters

    6. Adjust the outlet valve to the required pressure 7. Tighten the discharge valve 8. If you have any question, please read the instructions or call DESMI. 8. PERFORMANCE PARAMETERS Flow M3/h 50Hz Model Minimum flow Maximum flow Rated flow...

  • Page 15: Maintenance

    10.5 The pump may run with 60hz motor. The flow, head and power of the pump running at 60hz will be changed. As for running at 60hz, please consult DESMI. 9. MAINTENANCE Before maintenance, confirm that the pump is shut off so as to avoid accident. Pump bearing and shaft seal require no maintenance.

  • Page 16: Transportation And Storage

    Less than 80% and no condensation Maximum humidity occurs to the pump at 20° C 11. TROUBLE SHOOTING _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com...
  • Page 17 The pump is installed on Adjust installation an uneven surface _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail:...

  • Page 18: Size Diagrams

    Replace with an O-ring for the pumping medium suitable for the pumping medium. 12. SIZE DIAGRAMS _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail:...
  • Page 19 Oval flange (MVA)/A 1--33 1126 1152 1--36 1180 1206 Threaded connection (MVS)/G Anulated connection (MVS)/K _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com...
  • Page 20 1136 Oval flange (MVA)/A 4-22 1138 1163 Threaded connection (MVS)/G Anulated connection (MVS)/K _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com...
  • Page 21 1300 1298 10--20 1360 1358 10--22 1022 1420 1020 1418 DIN flange (MVS)/F _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com...
  • Page 22 20--14 1069 1568 1067 1566 20--17 1204 1747 1202 1745 DIN flange (MVS)/F _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com...
  • Page 23 2145 DIN flange (MVS)/F 45-12-2 1549 2225 45-12 1549 2225 45-13-2 1629 2305 _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com...
  • Page 24 1617 MVA(S)90-5-2 1049 1709 MVA(S)90-5 1049 1709 MVA(S)90-6-2 1141 1851 MVA(S)90-6 1141 1851 _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com...
  • Page 25 2355 MVA(S)150-5 1510 2355 MVA(S)150-6-2 1670 2515 MVA(S)150-6-1 1670 2515 MVA(S)150-6 1670 2515 _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com...
  • Page 26 2220 MVA(S)200-4-2D 1519 2414 MVA(S)200-4-2C 1519 2619 MVA(S)200-4-C 1519 2619 MVA(S)200-4 1519 2619 _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com...
  • Page 27 Impeller Cylindrical pin Guide shaft sleeve Warning nameplate Shaft sleeve b Hexagon nut _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com...
  • Page 28 Multi-use flange Positioning sleeve used Flange washer for shaft Pump shaft Oval flange _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com...
  • Page 29 Cylindrical pin Tightening strip Warning nameplate Positioning sleeve used for shaft Protective plate _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com...
  • Page 30 Hexagon nut Shaft sleeve assembly Flat washer Alloy bearing (30) Cylindrical head bolt _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com...
  • Page 31 Small impeller Hexagon nut Medium guide vane Guide vane with bearing Tightening strip _______________________________________________________________________________ DESMI Pumping Technology A/S www.desmi.com Tagholm 1 9400 Nø rresundby – Denmark Tel: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com...

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