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Sub TWI 8.90-02-C-SD | Wilo
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Sub TWI 8.90-02-C-SD

Technical data
Tender text

Fully submersible, multistage pump for pumping industrial and drinking water (ACS rating) with radial or semi-axial impellers in sectional construction for vertical or horizontal installation, with built-in non-return valve. Corrosion-free, three-phase AC motor for direct or star-delta starting with water-glycol filling, alternatively with drinking water filling. Hermetically cast motor with enamel-insulated winding, resin-impregnated or rewindable with PVC-insulated winding, and self-lubricating bearings. The motor is cooled by the pumped fluid. Therefore, the unit must always be operated immersed. The limit values for maximum fluid temperature and minimum flow velocity must be adhered to. Vertical installation is possible with or without cooling jacket. In cases of horizontal installation, a cooling jacket must always be provided .

Scope of delivery:

  • Submersible pump with connection cable and ACS rating
  • Installation and operating instructions
Operating Data
Max. delivery head Hmax 41.3 m
Unit
Pipe connection on the discharge side DNd Rp 5
Maximum operating pressure p 40.0 bar
Max. sand content 50 g/m³
Protection class motor IP68
Max. immersion depth 350 m
Min. fluid temperature Tmin 3 °C
Max. fluid temperature Tmax 30 °C
Net weight, approx. m 76 kg
Max. diameter Dmax 186 mm
Motor data
Motor design Submersible motor
Mains connection 3~400 V, 50 Hz
Rated power P2 9 kW
Rated speed n 2870 1/min
Rated current IN 21.5 A
Activation type Star-Delta (YΔ)
Max. switching frequency t 20 1/h
Motor diameter DM 137 mm
Min. flow rate at the motor m/s 0.1 m/s
Cable
Connection cable length 4 m
Cable cross-section 2x 4G4 mm²
Materials
Pump housing Stainless steel
Motor housing Cast iron
Shaft Stainless steel
Impeller Stainless steel
Ordering information
Net weight, approx. m 76 kg
Brand Wilo
Product description Sub TWI 8.90-02-C-SD
Article number 6075417
Documents

Certification booklet

Wilo-Sub TWI 4, Wilo-Sub TWI 6/TWI 06, Wilo-Sub TWI 8/TWI 08, Wilo-Sub TWI 010

Article Number 6080451
Edition 2022-02
Page format 209.9 x 297.0 mm
Number of pages 24
PDF (4 MB)

Certificate REACH

REACH Regulation

Edition 2021-05
Page format 209.9 x 297.0 mm
Number of pages 4
PDF (212 KB)
Services

With Wilo as your partner, you can not only be sure of choosing high-quality product solutions, but also of benefiting from a comprehensive, worry-free package of well thought-out services. We collaborate to develop a service concept tailored to your individual needs; with our expertise and personal consultancy, we make sure that the operation of your systems is as energy-efficient, reliable and economical as possible. All the while our competent Wilo service technicians are ready to assist you with fast, reliable and on-time support.

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Recommended services

Wilo-Live Assistant
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The Wilo-Live Assistant is a technical advisor at your side during pump service. By using the Wilo-Live Assistant, our expert advisers can support you in the boiler or equipment room via video transmission – live and in real time. You use your smartphone to show the installation set-up, while the Wilo expert follows everything on their screen. They can see the components as well as other details and can thus determine where the fault or breakdown originates. We prevent downtime and ensure operational reliability of your pumps and systems!

The Wilo-Live Assistant includes:

  • Interactive live support via video chat
  • Direct contact with an expert
  • Just-in-time solution to ensure maximum operational reliability of your pumps and systems

More suitable services

Service Packes
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The Wilo service offers predefined service packages in three sizes to make it easier to combine individual services.

The Wilo-Service package L includes:

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Optional add-on services:

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The Wilo service offers predefined service packages in three sizes to make it easier to combine individual services.

The Wilo-Service package M includes:

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Service package S borehole/submersible pump 6"-8"
    
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The Wilo service offers predefined service packages in three sizes to make it easier to combine individual services.

The Wilo-Service package S includes:

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Optional add-on services:

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Extended Warranty
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In combination of a new pump or system Wilo offers an extended warranty of up to five years in combination with commissioning and maintenance by the Wilo Service.

Extended warranty includes:

  • Full protection and predictable cost security
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Supervision
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Wilo supports during the concept phase to ensure quality work and cost efficiency. Our competent and qualified Wilo Service will support you with recommendations and technical advice throughout the entire project.

Supervision includes:

  • Regular on-site visits ensure the quality of information and advice
  • Technical consultancy, also available on site
  • Status report with recommendations after the visit
  • Comprehensive support from a Wilo expert
Installation
Installation borehole/submersible pump 6"-8"
    
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The Wilo service offers installation of our pumps or pumping systems. We offer an end-to-end process from gathering information on site to installing our product in the overall plant. An optimal installation set-up and the interaction of various individual factors lay the foundation for long-term operational safety.

Installation includes:

  • Professional inspection
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Commissioning
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For perfect functioning of the pump(s) / system(s), it is recommended to have the commissioning carried out by the works' own WILO SE Customer Service Department. Optimum setting and efficient operation of the system are ensured as a result. Commissioning is comprised of the following points:

  • Commissioning of system(s) according to checklist
  • Parameterisation and setting of switchgear
  • Testing and adaptation of initial compressing of pressure tanks (filling up to 80 litres incl.)
  • Functional check of fitted system(s)
  • Practice-oriented operation instruction
  • Wilo commissioning protocol

The price for commissioning only applies to system(s) which have been installed in accordance with the installation and operating instructions and state-of-the-art technology. No costs for any materials which may be required are included.

Maintenance
Maintenance BASIC borehole/submersible pump 6"-8"
    
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In order to ensure and guarantee operational reliability of the pumps/systems, it is recommended to have regular and DIN-compliant inspections and maintenance carried out by the works' own WILO SE Customer Service Department. The tasks are carried out in accordance with DIN 31051 / DIN EN 13306. The tasks comprise the following points:

  • Visual inspection of the pumps/systems
  • Mechanical check
  • Electrical check
  • Testing pressure vessels that may be on hand
  • Review and, if necessary, adjustment of the system parameters
  • Creating a maintenance protocol

Scheduling and organisation is performed by WILO. Other individual maintenance offers are possible on request.

Maintenance COMFORT borehole/submersible pump 6"-8"
    
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In order to ensure and guarantee operational reliability of the pumps/systems, it is recommended to have regular and DIN-compliant inspections and maintenance carried out by the works' own WILO SE Customer Service Department. The tasks are carried out in accordance with DIN 31051 / DIN EN 13306. The tasks comprise the following points:

  • Visual inspection of the pumps/systems
  • Mechanical check
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  • Review and, if necessary, adjustment of the system parameters
  • Creating a maintenance protocol
  • Consumable materials are included in the contract price
  • Elimination of payroll and travel expenses for deployments between maintenance intervals (during normal service hours)

Scheduling and organisation is performed by WILO. Other individual maintenance offers are possible on request.

Maintenance PREMIUM borehole/submersible pump 6"-8"
    
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In order to ensure and guarantee operational reliability of the pumps/systems, it is recommended to have regular and DIN-compliant inspections and maintenance carried out by the works' own WILO SE Customer Service Department. The tasks are carried out in accordance with DIN 31051 / DIN EN 13306. The tasks comprise the following points:

  • Visual inspection of the pumps/systems
  • Mechanical check
  • Electrical check
  • Testing and possible filling of pressure vessels that may be on hand
  • Checking the system parameters
  • Creating a maintenance protocol
  • Consumable materials are included in the contract price
  • Elimination of payroll and travel expenses for deployments between maintenance intervals (during and outside normal service hours)
  • Software updates
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Scheduling and organisation is performed by WILO. Other individual maintenance offers are possible on request.

System Optimisation
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The Wilo Service offers proactive system optimisation by optimising settings and doing minor adjustments to ensure operational reliability. System Optimisation includes among others:

  • Overhaul of pumps/systems to restore full performance
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Energy Solutions
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Wilo Service offers a proactive support to point out possible energy savings. Our service creates an overview of all installed assets to show how the energy consumption of pumps or systems can be reduced. We offer targeted consultancy and analysis, including the involvement of subsidies as well as comprehensive support around the changeover to high-efficiency technologies. Wilo-Energy solution includes:

  • Detailed assessment of the life cycle costs (LCC analysis)
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Repair
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Wilo Service draws on their competence and experience while consulting on site to decide whether the pump can actually be repaired on site or has to be sent in for a factory repair. Wilo also provides spare parts or a replacement pump to restore the operational reliability of the system.

Repair includes:

  • Verification and elimination of error causes by experienced Wilo experts
  • Non-binding estimate for repairs
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  • Coating of various pump or system components for an optimised efficiency factor
  • Use of genuine spare parts only
  • Documentation of the repair in the service report