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Desmi MODULAR S-N Series Operation And Maintenance Instruction

Self-priming centrifugal pump
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OPERATION AND MAINTENANCE INSTRUCTION
DESMI self-priming centrifugal pump
DESMI Pumping Technology A/S
Tagholm l, DK-9400 Nørresundby, Denmark
Manual:
MODULAR S-N
Tel.: +45 96 32 81 11
Fax: +45 98 17 54 99
E-mail:
desmi@desmi.com
Internet:
www.desmi.com
Language:
T1440
English
Revision:
H (11/20)

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DEREK POTTER
February 25, 2025

I **** requesting the capacity of an electric 3-phase 7.5kW Desmi SA80 -70-175 bilge pump

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Summary of Contents for Desmi MODULAR S-N Series

  • Page 1 OPERATION AND MAINTENANCE INSTRUCTION DESMI self-priming centrifugal pump MODULAR S-N 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: T1440 English...

  • Page 2: Table Of Contents

    Table of contents: 1. PRODUCT DESCRIPTION ..........................3 1.1 DELIVERY ................................3 2. TECHNICAL DATA ............................3 2.1 NAME PLATE ................................ 3 2.2 EXPLANATION OF THE TYPE NUMBER ......................4 2.3 TECHNICAL DESCRIPTION ..........................4 3. INSTALLATION ..............................6 3.1 MOUNTING/FASTENING ........................... 6 3.2 WIRING ..................................

  • Page 3: Product Description

    The pumps are available in sizes ranging from 25 to 100 mm on the pressure flange. The suction flange is bigger than the pressure flange. DESMI S is a single-stage self-priming centrifugal pump with stainless steel shaft and mechanical shaft seal. The smallest pumps, S32-25-110N and S50-32-135N, have open impeller, whereas all other sizes have closed impeller.

  • Page 4: Explanation Of The Type Number

    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 –...
  • Page 5   where index "in" is suction branch, "out" is pressure branch, and "calc" are the values calculated by the user DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Dänemark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com...

  • Page 6: Installation

    Alternatively, the V-belt pulley may be mounted with a TAPER LOCK bush. When dimensioning the V-belt pulley it is important to follow the rules of the DESMI nomograms for the pump size in question - contact DESMI.

  • Page 7: Wiring

    Remove Allen screws (22), which hold the shaft seal cover to the pump casing, and pull the bearing housing to remove the complete bearing housing with impeller, bearings, and shaft. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Dänemark Tlf.

  • Page 8: Dismantling Shaft Seal

    Assemble the bearing housing and the shaft seal cover. Lead the water deflector over the shaft until it touches the shaft seal cover and then further 1-1.5 mm into the shaft seal cover (the bearing housing in S32-25-110N or S50-32-135N). DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Dänemark Tlf.

  • Page 9: Fitting Shaft Seal

    Place the gasket between pump casing and shaft seal cover on the shaft seal cover where it can be held with a little grease. Lead bearing housing with shaft seal cover into place and fasten. Note that the drain hole for the shaft seal faces downwards. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Dänemark Tlf.

  • Page 10: Shaft

    - the pump casing is filled with liquid. Start the pump for a moment to check the direction of rotation. If the direction is correct (i.e. in the direction of the arrow), the pump may be started. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Dänemark Tlf.

  • Page 11: System Balancing

    DESMI 6. Pump and piping system As 5 wrongly dimensioned FAULT CAUSE REMEDY DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Dänemark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com www.desmi.com...

  • Page 12: Inspection And Maintenance

    12.1 ORDERING SPARE PARTS When ordering spare parts please always state pump type and pump No. (appears on the name plate of the pump). See also spare parts drawing with item Nos. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Dänemark Tlf.

  • Page 13: Operating Data

    The powers stated in the table below are the highest possible absorbed by the pump, whereas the min./max. values for flow and pressure indicate DESMI's recommended operating range for the pump with the biggest impeller.

  • Page 14: Ec Declaration Of Conformity

    14. EC DECLARATION OF CONFORMITY DESMI PUMPING TECHNOLOGY A/S, hereby declare that our pumps of the type Modular are manufactured in conformity with the following essential safety and health requirements in the COUNCIL DIRECTIVE 2006/42/EC on machines, Annex 1. The following harmonized standards have been used: EN/ISO 13857:2008 Safety of machinery.

  • Page 15: 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 16: Assembly Drawings

    29 O-ring 10 Mechanical shaft seal 20 Shaft seal cover 75 Drain plug 76 Relief valve DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Dänemark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com...
  • Page 17 16 Sunk key 27 Contact ring 75 Drain plug 17 Shaft 28 Sealing washer 76 Relief valve DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Dänemark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com...
  • Page 18 31 Oil seal ring 15 Ball bearing 24 Allen screw 75 Drain plug 76 Relief valve DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Dänemark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com...

  • Page 19: Dimensional Sketch

    10 19 260 300 14 S125-100- 500 80 476 315 280 32j6 10 19 330 370 16 105 220N DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Dänemark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com...
  • Page 20 8x18 1/4" 3/4" S125-100-220N 320 445 250 210 125 8x18 220 180 100 8x18 DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Dänemark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com www.desmi.com...

This manual is also suitable for:

S32-25-110nS50-32-135nS70-50-175nS70-50-220nS70-50-275nS80-70-175n ... Show all

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