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ITT BORNEMANN SLH-5G Dismantling Manual

Replacing the mechanical seal of screw pump
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Dismantling and installation
manual for screw pump SLH-5G
Replacing the mechanical seal
Original document
Type: SLH-5G
M-067 REV A 5/25
Industriestr. 2 | 31683 Obernkirchen (Germany)
Telephone: +49-5724-390-0 | Fax: +49-5724-390-290
E-mail: info.bornemann@itt.com | Internet: www.bornemann.com

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Summary of Contents for ITT BORNEMANN SLH-5G

  • Page 1 Dismantling and installation manual for screw pump SLH-5G Replacing the mechanical seal Original document Type: SLH-5G M-067 REV A 5/25 Industriestr. 2 | 31683 Obernkirchen (Germany) Telephone: +49-5724-390-0 | Fax: +49-5724-390-290 E-mail: info.bornemann@itt.com | Internet: www.bornemann.com...
  • Page 2 Type: SLH-5G SLH5G-MS-100 Author: IDEM Checker: US 04/04/2025. Rev.0, en_UK © ITT Bornemann GmbH 2025 M-067 REV A 5/25...
  • Page 3 Table of contents Table of contents General information......................5 Safety ............................. 8 Safety and warning information ..........................8 Obligations of the operator ............................9 Personnel qualifications ............................10 Basic safety instructions ............................10 Securing against restarting ............................11 Safe workplace ................................11 Overviews ..........................
  • Page 4 Table of contents M-067 REV A 5/25...
  • Page 5 Content Operating manual basic safety instructions, product description, transport, operation and maintenance Documentation from suppliers Technical documentation for components that are not manufactured by ITT Bornemann GmbH Data sheet Technical data and operating conditions, output and operating limits Dimensional drawing...
  • Page 6 Copyright This manual is protected by copyright. Without the written permission of ITT Bornemann GmbH (hereinafter referred to as the manufacturer), transferring this manual to third parties, duplication in any kind and form, even of excerpts, as well as utilising and/or communicating the contents are not permitted except for internal purposes.
  • Page 7 Telephone: +49 5724 390-0 | Fax: +49-5724-390-290 E-mail: info.bornemann@itt.com | Internet: www.bornemann.com In addition, ITT Bornemann GmbH is always interested in information and experiences resulting from the use of our products which can be valuable for making improvements to them.
  • Page 8 Safety Safety and warning information Safety Safety and warning information Safety and warning information is identified in this manual by warning signs and is introduced by signal words which indicate the extent of the risk. Warning notices are laid out as follows: SIGNAL WORD Type and source of the danger! Explanation on the type and source of the...
  • Page 9 Safety Obligations of the operator Obligations of the operator The pump is used in the commercial sector. The operator of the pump is therefore subject to the statutory occupational safety obligations. In addition to the safety instructions in this manual, the safety, occupational safety and environmental protection regulations applicable to the area of application of the pump must be observed.
  • Page 10 Warranty claims shall be void in the event that the pump is opened by an unauthorised person during the warranty period. The pump may only be opened by qualified and trained people. Trained customer service engineers from ITT Bornemann GmbH are available for repairs if required. ( ➝...
  • Page 11 Safety Securing against restarting Securing against restarting WARNING Risk of death due to unauthorised or uncontrolled restart! Unauthorised or uncontrolled restarting can result in serious injuries or even death. During all work on the system: Ensure that the system is secured against unauthorised or uncontrolled restarting.
  • Page 12 Safety Safe workplace Incompatible cleaning agents ATTENTION Material damage due to incompatible cleaning agents! Incompatible cleaning agents can damage the surfaces and destroy seals. Only use cleaning agents that are compatible with the surfaces and sealing materials, preferably neutral agents. Before cleaning, check and ensure that the cleaning agents are compatible with the installed components and seals.
  • Page 13 Overviews Pump overview Overviews Pump overview The following figure shows the pump only as an example and may differ from the pump supplied.  Observe the dimensional drawing for the order-specific representation of the pump, in particular the position of inlet and outlet nozzles.
  • Page 14 Overviews Exploded view of the components Exploded view of the components Fig. 2: Pump SLH-5G This illustration shows two mechanical seals: the single-acting mechanical seal (270.A and 270.B) and the double-acting mechanical seal (277.A, 277.B and 277.C). In actual fact, only one type of mechanical seal is installed on both shafts. M-067 REV A 5/25...
  • Page 15 Overviews Exploded view of the components Pump casing Nozzle Bearing casing 139.1 Blocking device 5G Intermediate flange Grooved metal gasket Cover Screw plug Drive shaft Sealing ring Driven shaft Ventilation valve 32 / 33 Feed screw Grooved metal gasket 34.1 / 34.2 Clamping disc Dowel pin 34.3...
  • Page 16 Dismantling Preparing the pump Dismantling WARNING Risk of injury if personnel are not sufficiently qualified! If unqualified personnel carry out work on the pump or are in the danger area of the pump, dangers arise which can cause serious injuries and considerable material damage to the system.
  • Page 17 Dismantling Checking the dismantling location 4.2 Checking the dismantling location Checking the minimum removal length ensures that the mechanical seal can be replaced on-site. The mechanical seal can be replaced on-site in the pump assembly or separately in a workshop. Prerequisites for on-site dismantling If the mechanical seal should be replaced on-site, the removal length must be checked.
  • Page 18 Dismantling Pump casing and cover 4.3 Pump casing and cover ATTENTION Material damage due to mixing up of components! To avoid confusion during assembly, disassembled components and parts, such as gear wheels, bushings or set collars, are labelled immediately. A mix-up can lead to material damage.
  • Page 19 Dismantling Pump casing and cover 4.3.1 Pump casing cover Additional tools  Plastic hammer  350 mm tyre lever Fig. 3: Installation under the cover Pump casing Cover 83.1 Cap nut Washer ⯈ Remove the cap nuts (fig. 3:, pos. 83.1). ⯈...
  • Page 20 Dismantling Pump casing and cover 4.3.2 Pump casing Additional tools  Allen screw (long)  Plastic hammer  350 mm tyre lever Fig. 4: Cylinder screws in the pump casing Pump casing Cylinder screw ⯈ Remove the cylinder screws (fig. 4:, pos. 87). ⯈...
  • Page 21 Dismantling Pump casing and cover 4.3.3 Shaped ring Fig. 5: Shaped ring Pump casing Cover Shaped ring ⯈ Remove the shaped ring (fig. 5:, pos. 200) from the pump casing (fig. 5:, pos. 1). ⯈ Remove the shaped ring (fig. 5:, pos. 200) from the cover (fig. 5:, pos. 17). ...
  • Page 22 Dismantling Feed screws 4.4 Feed screws 4.4.1 Dismantling the ventilation valve and oil filler plug Additional tools  Blocking device 5G Fig. 6: Ventilation valve and oil filler plug Bearing casing Nozzle 139.1 Blocking device 5G Grooved metal gasket Screw plug Sealing ring Ventilation valve Grooved metal gasket...
  • Page 23 Dismantling Feed screws 4.4.2 Dismantling the conveyor screws Additional tools  Blocking device 5G Fig. 7: Feed screws Bearing casing 34.1 / 34.2 Clamping disc Drive shaft 34.3 Shaped ring Driven shaft 54 / 55 Gear wheel 32 / 33 Feed screw 139.1 Blocking device 5G ⯈...
  • Page 24 Dismantling Intermediate flange / mechanical seals Intermediate flange / mechanical seals Additional tools  Plastic hammer  350 mm tyre lever Fig. 8: Intermediate flange / mechanical seal Bearing casing Intermediate flange Washer 87.1 Hexagon screw Dowel pin Set screw Single-acting mechanical seal Double-acting mechanical seal Rotating unit - medium...
  • Page 25 Dismantling Intermediate flange / mechanical seals ⯈ Remove the rotating unit – medium (fig. 8:, pos. A) for the mechanical seal (fig. 8:, pos. 270, 277) from the shaft on the product side. ⯈ Remove the set screw (fig. 8:, pos. 259) from the mechanical seal (fig. 8:, pos. 270, 277).
  • Page 26 Cleaning Cleaning agent Cleaning ATTENTION Material damage due to improper cleaning! Improperly performed cleaning work can cause severe wear or damage to component surfaces. As a result, material damage such as leaks or failure of the pump assembly is possible. Avoid cleaning with sharp-edged objects such as screwdrivers, wire brushes or spatulas.
  • Page 27 Cleaning Cleaning and checking components Cleaning and checking components ⯈ Clean all components thoroughly. ⯈ Check the condition of all components thoroughly. ⯈ Check the condition of all sealing areas of the individual parts. ⯈ Lightly grease all sealing areas of the individual parts. ⯈...
  • Page 28 Wear checks Performing a visual inspection Wear checks ATTENTION Material damage due to wear! Worn and worn out components can lead to material damage. Check all components for dimensional accuracy. Take dimensional drawings and system descriptions into account. Performing a visual inspection ⯈...
  • Page 29 Installation Replacing standard parts Installation WARNING Risk of injury if personnel are not sufficiently qualified! If unqualified personnel carry out work on the pump or are in the danger area of the pump, dangers arise which can cause serious injuries and considerable material damage to the system.
  • Page 30 Installation Observing torques Observing torques Tab. 3: Torques Size 2000 3000 4000 Item Description Size Size Size 34.1 Clamping disc 34.2 Clamping disc 83.1 Cap nut Cylinder screw Nozzle n.a. n.a. n.a. Screw plug n.a. n.a. n.a. Ventilation valve n.a. n.a.
  • Page 31 Installation Intermediate flange / mechanical seals Intermediate flange / mechanical seals Additional tools  Plastic hammer Fig. 9: Intermediate flange / mechanical seal Bearing casing Intermediate flange Washer 87.1 Hexagon screw Dowel pin Set screw Single-acting mechanical seal Double-acting mechanical seal Rotating unit - medium Stationary unit Rotating unit –...
  • Page 32 Installation Intermediate flange / mechanical seals For double-acting mechanical seals: ► Install the rotating unit – atmosphere (fig. 9:, pos. C) for the mechanical seal onto the shaft on the atmosphere side. ► Observe the position of the set screws (fig. 9:, pos. 259). ►...
  • Page 33 Installation Intermediate flange / mechanical seals 7.4.1 Feed screws Fig. 10: Feed screws Bearing casing 34.1 / 34.2 Clamping disc Drive shaft 34.3 Shaped ring Driven shaft 54 / 55 Gear wheel 32 / 33 Feed screw 139.1 Blocking device 5G ⯈...
  • Page 34 Installation Intermediate flange / mechanical seals 7.4.2 Ventilation valve and oil filler plug Fig. 11: Ventilation valve and oil filler plug Bearing casing Nozzle 139.1 Blocking device 5G Grooved metal gasket Screw plug Sealing ring Ventilation valve Grooved metal gasket ⯈...
  • Page 35 Installation Intermediate flange / mechanical seals 7.4.3 Shaped ring Fig. 12: Shaped ring Pump casing Cover 200 Shaped ring ⯈ Install the shaped ring (fig. 12:, pos. 200) in the pump casing (fig. 12:, pos. 1). ⯈ Install the shaped ring (fig. 12:, pos. 200) in the cover (fig. 12:, pos. 17). ...
  • Page 36 Installation Intermediate flange / mechanical seals 7.4.4 Pump casing Additional tools  Allen screw (long)  Plastic hammer Fig. 13: Cylinder screws in the pump casing Pump casing Cylinder screw ⯈ Install the pump casing (fig. 13:, pos. 1). ⯈ Install the cylinder screws (fig.
  • Page 37 Installation Intermediate flange / mechanical seals 7.4.5 Pump casing cover Additional tools  Torque spanner of up to 350 Nm  Plastic hammer Fig. 14: Installation under the cover Pump casing Cover 83.1 Cap nut Washer ⯈ Install the cover (fig. 14:, pos. 17). ⯈...
  • Page 38 Installation Topping up oil Topping up oil ATTENTION Material damage due to incorrect lubrication! Mixing lubricants or using incorrect lubricants can cause the pump to fail. ➝ Ensure the correct lubricant types. ( Supplementary document on lubricants and preservatives) ➝ Ensure correct lubricant quantity.
  • Page 39 Installation Installing the pump M-067 REV A 5/25...
  • Page 40 M-067 REV A 5/25 Industriestr. 2 | 31683 Obernkirchen (Germany) Telephone: +49-5724-390-0 | Fax: +49-5724-390-290 E-mail: info.bornemann@itt.com | Internet: www.bornemann.com...