Desmi NSLV Compact Spacer Operation And Maintenance Instructions
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Desmi NSLV Compact Spacer Operation And Maintenance Instructions

End suction centrifugal pump
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OPERATION AND MAINTENANCE INSTRUCTIONS
DESMI end suction centrifugal pump
NSLV and NSLH Compact Spacer
DESMI Pumping Technology A/S
Tagholm 1 – DK-9400 Nørresundby – Denmark
Special pump No. ...............................................
Tel.: +45 96 32 81 11
Fax: +45 98 17 54 99
E-mail:
desmi@desmi.com
Internet:
www.desmi.com
Manual:
Language:
T1514
English
Revision:
A(08/21)

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  • Page 1 OPERATION AND MAINTENANCE INSTRUCTIONS DESMI end suction centrifugal pump NSLV and NSLH Compact Spacer DESMI Pumping Technology A/S Tagholm 1 – 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...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS: PAGE 1. PRODUCT DESCRIPTION ..........................2 1.1 DELIVERY ................................2 2. TECHNICAL DATA ............................. 2 2.1 EXPLANATION OF THE TYPE NUMBER ......................2 2.2 TECHNICAL DESCRIPTION ..........................3 3. INSTALLATION ..............................5 3.1 MOUNTING/FASTENING ........................... 5 3.2 WIRING .................................. 5 4.

  • Page 4: Product Description

    1. PRODUCT DESCRIPTION These operation and maintenance instructions apply to the DESMI NSLV and NSLH Compact Spacer pump. The NSLV pump is constructed for vertical mount (with suction flange downwards) and the NSLH pump for horizontal mount. The pump is a single-stage end suction centrifugal pump equipped with stainless steel shaft, mechanical shaft seal, and closed impeller.

  • Page 5: Technical Description

    The capacity of the pump appears from the name plate on the pump. If the pump has been delivered without motor, the pump capacity is to be indicated on the plate when mounting the motor. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby - Denmark...
  • Page 6                DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby - Denmark Tel.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com www.desmi.com...

  • Page 7: Installation

    The pump is to be stored in a dry area. Before shipment the pump is to be fastened securely on pallets or the like. The pumps are to be lifted in the following way: DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby - Denmark Tel.: +45 96 32 81 11...

  • Page 8: Dismantling

    (15) to the shaft seal cover, pull shaft seal cover and bearing cover apart, by which the shaft seal (10) is pulled off the shaft. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby - Denmark Tel.: +45 96 32 81 11...

  • Page 9: Dismantling Seat

    Dip the outer rubber ring of the seat into soapy water or apply silicone grease. Now press the seat into place with the fingers and check that all parts are correctly imbedded. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby - Denmark Tel.: +45 96 32 81 11...

  • Page 10: Fitting Impeller

    80) check that the radial runout does not exceed 0.1 mm. A larger runout may result in pump vibrations, increased bearing load and/or the impeller getting into contact with the pump sealing ring(s). DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby - Denmark Tel.: +45 96 32 81 11...

  • Page 11: Shaft

    The liquid also serves as coolant for the shaft seal. In order to protect the shaft seal the pump must not run dry. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby - Denmark Tel.: +45 96 32 81 11...

  • Page 12: Start-Up

    Should the pump not function as intended, please proceed according to the fault-finding list. Bear in mind, though, that the pump was carefully checked and tested at the factory and that the majority of faults stem from the piping system . DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby - Denmark Tel.: +45 96 32 81 11...
  • Page 13 1. Cavitation in pump Suction lift too high/ noise Suction line wrongly dimensioned/Liquid temperature too high DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby - Denmark Tel.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com www.desmi.com...

  • Page 14: Inspection And Maintenance

    RS - sealing facing downwards, fill the bearing itself with grease and place a grease bead on the bearing towards the shaft in a quantity corresponding to the table below. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby - Denmark Tel.: +45 96 32 81 11...

  • Page 15: Repairs

    If the pumped liquid temperature is above 80° C, high-temperature grease is recommended, e.g. SKF LGH P2/0.4. DESMI use SKF LGHP2 as standard. Note that relubrication can cause a (usually temporary) bearing temperature rise of up to approx. 20 ° C - especially by mixing different types of grease and / or by overlubricating the bearing.

  • Page 16: Operating Data

    1.5 x the permissible working pressure. The test pressure is stated in the test certificate and stamped into the discharge flange of the pump. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby - Denmark Tel.: +45 96 32 81 11...

  • Page 17: Eu & Uk Declaration Of Conformity

    14. EU & UK DECLARATION OF CONFORMITY DESMI A/S, hereby declare that our pumps of the NSLV and NSLH Compact Spacer type are manufactured in conformity with the following essential safety and health requirements in the COUNCIL DIRECTIVE 2006/42/EC on machines, Annex 1.

  • Page 18: Information Relevant For Disassembly Or Disposal At End-Of-Life

    15. INFORMATION RELEVANT FOR DISASSEMBLY OR DISPOSAL AT END-OF-LIFE No damage materials are used in DESMI pumps – please refer to DESMI Green Passport (can be sent on request – contact a DESMI sales office) – i.e. common recycling companies can handle the disposal at end-of-life.

  • Page 19: Assembly Drawing Ø215/265

    97 Nipple 98 Sleeve 106 Pressure gauge cock *) Only if motor is bigger than motor bracket DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby - Denmark Tel.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail:...

  • Page 20: Assembly Drawing Ø330/415 With Light Bearing Housing

    Pressure gauge Nipple Sleeve Pressure gauge cock *) Only if motor is bigger than motor bracket DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby - Denmark Tel.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com www.desmi.com...

  • Page 21: Assembly Drawing Ø330/415 With Heavy Bearing Housing

    Pressure gauge cock *) Only if motor is bigger than motor bracket 22. DIMENSIONAL SKETCH Please require a dimensional sketch of the actual pump from DESMI. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby - Denmark Tel.: +45 96 32 81 11...

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