centrifugal pumps

The Centrifugal Pump - KAMJaya

The Centrifugal Pump

In 1689 the physicist Denis Papin invented the centrifugal pump and today this kind of pump is the most used around the world. The centrifugal pump is built on a simple principle : liquid is led to the impeller hub and by means of the centrifugal force it is flung towards the periphery of the impellers.
The construction is fairly inexpensive, robust and simple and its high speed makes it possible to connect the pump directly to an asynchronous motor. The centrifugal pump provides a steady liquid flow, and it can easily be throttled without causing any damage to the pump.

If a pressure difference occurs in the system while the centrifugal pump is not running, liquid can still pass through it due to its open design.

The difference demands on the centrifugal pump’s performance, especially with regard to head, flow, and installation, together with the demands for economical operation, are only a few of the reasons why so many types of pump exist.

 

Grundfos end-suction pumps

Grundfos end-suction pumps are used in water supply, industrial pressure boosting, industrial liquid transfer, HVAC (heating, ventilation and air-conditioning), and irrigation.
Grundfos end-suction pumps are multi-purpose pumps suitable for a variety of different applications requiring reliable and cost-efficient supply. End-suction pumps are used in five main areas of application: water supply, industrial pressure boosting, industrial liquid transfer, HVAC and irrigation by Grundfos end-suction pumps

The Grundfos NB/NBG pumps are all non-self-priming, single-stage, centrifugal volute pumps with axial suction port, radial discharge port and horizontal shaft. The NB/NBG range consists of close-coupled pumps with their main dimensions in accordance with either EN733 or ISO2858.

Applications for Grundfos end-suction pumps

Grundfos offers a virtually limitless range of close coupled (NB) end-suction pumps. Their sturdiness and reliability make them ideal for use in demanding environments such as the following:

  • District heating plants
  • Heating systems for blocks of flats
  • Air-conditioning systems
  • Cooling systems
  • Wash down systems
  • Other industrial systems.

 

Features and benefits Grundfos end-suction pumps

  • Optimised hydraulics in housing and impeller = unimpeded liquid flow
  • O-ring seal between pump housing and cover = no risk of leakage
  • pumps Housing, impeller and wear ring in different materials = improved corrosion resistance, no sticking elements
  • Pump is CED coated to increase corrosion resistance
  • Available with IE1, IE2 and IE3 motors
  • Available in a number of shaft seal and material variants
  • PN 10,16 and 25 bar
  • For temperatures up to 140 °C.

Wilo-Comfort Pump

wilo-comfort-pump-transfer-pompaDesign

 

Highly efficient water-supply unit ready for connection (non self-priming). With 2 to 6 vertically arranged Helix VE series stainless steel high-pressure centrifugal pumps in glanded version switched in parallel; every pump is equipped with an integrated air-cooled frequency converter, including Comfort Controller CCe

 

 

Application

 

  • Fully automatic water supply and pressure boosting in residential, commercial and public buildings, hotels, hospitals, department stores and for industrial systems.
  • Pumping of drinking water, process water, cooling water, fire water (apart from fire-extinguishing systems in accordance with DIN14462) or other water mixtures that do not attack the materials used chemically or mechanically and do not contain abrasive or long-fibre constituents

 

Type key

 

Example: Wilo-COR-4 Helix VE 1603/K/VR
COR Compact pressure boosting system with integrated speed control of each pump
4 Number of pumps
Helix VE Pump series
16 Rated volume flow [m3/h] of the single pump
03 Number of single pump stages
K With cartridge mechanical seal
5.5 Rated motor power P2 in kW [only included if more than one motor is available for types with the same hydraulic output]
CCe Control device; CCe = Comfort Controller for pumps with integrated frequency converter

 

Special features/product advantages

 

  • Sturdy system with Helix VE stainless steel high-pressure circulation pumps with integrated frequency converter that can be controlled from 25 Hz to 60 Hz
  • High-efficiency pump hydraulics
  • Entire system is pressure-loss optimised
  • Integrated dry-running detection with automatic deactivation via the motor control electronics
  • Maximum degree of control using the CCe control device with additional functions, micro-computer control and touch display

 

Technical data

 

  • Mains connection 3~400 V ± 10%, 50 Hz; 3~380/440 V ±10 %, 60 Hz
  • Max. fluid temperature +50 °C (+70 °C optional)
  • Ambient temperature max. 40 °C
  • Operating pressure 16 bar (25 bar optional)
  • Inlet pressure 10 bar
  • Nominal connection diameters on discharge side R 1½ ‐ DN 125
  • Nominal connection diameters on inlet side R 1½” – DN 125
  • Speed range 1500-3770 rpm
  • Protection class: IP 54
  • Fuse protection on mains side A, AC 3 according to motor power and EVU regulations
  • Approved fluids (other fluids on request):
    • Drinking water and domestic hot water
    • Cooling water
    • Fire water

    Note on fluids: Approved fluids are generally waters which do not attack the materials used, neither chemically nor mechanically, and do not contain any abrasive or long-fibre constituents. System in accordance with DIN 1988 (EN 806)

 

Equipment/function

 

  • 2-6 pumps per system of the Helix VE 4 to Helix VE 16 series, with IE2-equivalent standard motors and variable auto control with integrated frequency converter for each pump
  • Automatic pump control via Comfort Controller CCe
  • Parts that come in contact with the fluid are corrosion-resistant
  • Base frame made of galvanised steel, with height-adjustable vibration absorbers for insulation against structure-borne noise
  • Check valve on the suction and pressure sides of each pump
  • Non-return valve on the pressure side of each pump
  • Diaphragm pressure vessel 8 l, PN16, pressure side
  • Pressure sensor, pressure side
  • Pressure gauge, pressure side
  • Optional low-water cut-out switchgear with pressure gauge, suction side

 

Description/design

 

  • Base frame: galvanised steel, with height-adjustable vibration absorbers for comprehensive insulation against structure-borne noise; other versions on request
  • Pipework: complete pipework made of stainless steel, suitable for the connection of all piping materials used; the pipework is dimensioned according to the overall hydraulic performance of the pressure boosting system
  • Pumps: 2 to 6 pumps of the Helix VE 4.., 6.., 10.., 16.. series are used, which are connected in parallel. The air-cooled frequency converters mounted on the pump motor enable infinitely variable control between 25 Hz and a maximum of 60 Hz for all pumps of this series. All parts which come in contact with fluid are made of stainless steel for the Helix VE 4.., 6.., 10.., 16..; other versions on request. KTW/WRAS/ACS approval for all parts that come in contact with the fluid
  • Valves: With the Helix VE 4.., 6.., 10.., 16.. series, every pump is fitted on the suction and pressure side with a check valve with DVGW approval mark and on the pressure side with a non-return valve with DVGW/KTW approval
  • Diaphragm pressure vessel: 8 l/PN16 to be arranged on the discharge side. With a diaphragm made of butyl rubber, with DVGW/KTW approval, completely safe in accordance with food safety laws for testing and inspection purposes, with drain and throughflow valve with DVGW/KTW approval in accordance with DIN 4807.
  • Pressure sensor: 4 to 20 mA, located on the discharge side for controlling the central Comfort Controller CCe
  • Pressure indication: pressure gauge (ø 63 mm) arranged on the discharge side; additional digital indication of the discharge pressure on the alphanumeric touchscreen on the Comfort Controller
  • Switchgear/controller: The system is equipped with a Comfort Controller CCe as standard

 

Materials

 

For the series with Helix VE 4 to VE 16:

  • Impellers, diffusers, stage housing made of stainless steel 1.4307
  • Pump housing made of stainless steel 1.4301
  • Shaft made of stainless steel 1.4057
  • 1.4404 shaft protection sleeve
  • O-ring gaskets made of EPDM (FKM gasket on request)
  • Pipework made of stainless steel 1.4571

 

Scope of delivery

 

  • Factory-mounted, connection-ready pressure boosting system checked for functionality and impermeability
  • Packaging
  • Installation and operating instructions
  • Transport eyes for self-assembly

 

Planning guide

 

Inlet pressure

The maximum inlet pressure (see Technical data) must be taken into account when configuring the system. The maximum permissible inlet pressure is calculated from the maximum operating pressure of the system minus the maximum pump delivery head at Q = 0

Pressure reducer

Fluctuating inlet pressure is compensated by the speed control integrated into each single pump as long as the pressure fluctuation is not greater than the difference between the setpoint pressure value and the zero-delivery head of the single pump at minimum speed. If the pressure fluctuation is greater, a pressure reducing valve must be installed upstream of the system.

Volume flow

Up to 155 m3/h (43 l/s) system configuration in accordance with DIN 1988 (EN 806); with standby pump up to 185 mm3/h (51 l/s) during operation of the standby pump as an auxiliary peak-load unit

Residual-current-operated protection

switch

When installing residual-current-operated protection switches in conjunction with frequency converters, bear in mind that only universal-current-sensitive residual-current-operated protection switches in accordance with DIN/VDE 0664 are to be fitted.

Wilo-WMS low-water cut-out switchgear

The series Helix VE pump being used is already equipped with an integrated dry-running detection as safety equipment for the pump. Nevertheless, the installation of a low-water cut-out switchgear is required in cases where the pressure boosting systems are connected directly to a public mains power supply; that prevents the inlet pressure in the mains supply line from falling below 1.0 bar. Please order directly when ordering the pressure boosting system. The WMS will then be installed in the pressure boosting system, electrically wired and fully tested by Wilo during the final functional test.

Standards/directives

The overall system conforms with the requirements of

  • DIN 1988 Part 5
  • DIN 1988 Part 6* (**)

* The specifications in DIN 1988 (EN 806) and of the water-supply companies are to be observed. Regarding the electrical components, the system conforms with the requirements of

  • VDE 0100 Part 430/Part 540
  • VDE 0110 Part 1/Part 2
  • VDE 0660 Part 101/Part 107 and
  • DIN 40719/IEC 754

Always observe the specifications in DIN 1988 (EN 806) when using and operating the pressure boosting system.(**) That does not apply to fire extinguishing systems in accordance with DIN 14462. Please request these separately.

Grundfos Pumps - horizontal multistage pump CM - CME

horizontal, multistage, end-suction centrifugal pumps-grundfos pumpsThe Grundfos Pumps horizontal multistage pump CM (=Centrifugal Modular) has been created with compactness and modularity as two of its central features, making numerous configurations possible. The pump is basically composed of a series of interchangeable modules, all of which have been designed to work together seamlessly, no matter what the application.

The pumps are of the close-coupled type.

The difference between the CM and the CME pump ranges is the motor. CM pumps are fitted with mains-operated motors, whereas the motors for CME pumps have an integrated frequency converter.

Both CM and CME Grundfos Pumps have mechanical shaft seals.

The CM and CME Grundfos Pumps are available in cast iron or stainless steel (AISI 304/DIN 1.4301 stainless steel, which is for water and non-corrosive liquids, and AISI 316/DIN 1.4401 stainless steel, which offers a high degree of corrosion protection against aggressive liquids).

Applications of Grundfos Pumps

The CM or CME Grundfos Pumps is a multi purpose pump for both industry and water boosting in general.

It is compact, noiseless, reliable and flexible, and this make it an optimal solution for installation and interaction with other components in small and large systems or as a stand-alone pump.

Features and benefit Of Grundfos Pumps

  • Compact design
  • Modular construction/customised solutions
  • Worldwide usage
  • High reliability
  • Service-friendly
  • Wide performance range
  • Low noise level
  • High-performance hydraulics
  • Electro-coated cast-iron parts
  • Customised solutions
  • Grundfos motor
  • E-solutions
  • High efficiency.

Wilo Pumps - CronoNorm NL Series

Design Of Wilo Pumps

 

Single-stage low-pressure centrifugal Wilo Pumps with axial suction point, according to EN 733 and ISO 5199, mounted on a baseplate.

 

Application Wilo Pumps

 

  • For pumping heating water (in accordance with VDI 2035), water-glycol mixtures and cooling and cold water without abrasive substances in heating, cold water and cooling water systems
  • For applications regarding the municipal water supply, irrigation, building services, industry, power stations etc. (e.g. circulation, transfer and pressure-boosting tasks)

 

Type key of Wilo Pumps

 

Example NL 40/200B-11/2
NL Standard pump with axial suction
40 DN for the pressure flange
200B Nominal diameter of impeller
11 Rated motor power P2 [kW]
2 number of poles

 

Special features/product advantages of Wilo Pumps

 

  • Reduced life-cycle costs through optimised efficiency levels
  • Bidirectional, force-flushed mechanical seal
  • Low NPSH values, best cavitation properties
  • Shaft coupling with or without intermediate sleeve
  • Shaft deflection satisfies the requirements of ISO 5199

 

Technical data of Wilo Pumps

 

  • Minimum Efficiency Index (MEI) ≥ 0.4
  • Permissible temperature range of -20°C to +120°C
  • Mains connection 3~400 V, 50 Hz
  • Protection class IP 55
  • Nominal diameter DN 32 to DN 150
  • Max. operating pressure 16 bar

 

Scope of delivery

 

  • Wilo Pumps with free shaft end or
  • Wilo Pumps on baseplate with coupling and coupling protection or
  • Completely mounted pump on baseplate with electric motor
  • Installation and operating instructions

 

Materials of Wilo Pumps

 

  • Wilo Pumps housing and pressure lid: EN-GJL-250
  • Bearing bracket: EN-GJL-250
  • impeller: EN-GJL-250
    (special version: G-CuSn10)
  • Shaft: X20Cr13
  • Mechanical seal: AQ1EGG
    (other mechanical seals on request)

 

Description/design of Wilo Pumps

 

  • Wilo Pumps Single-stage low-pressure centrifugal pump as baseplate pump with axial suction piece with flanged bearing bracket and axis mounting for flexibly coupled drives.
  • Spacer coupling (sleeve coupling) available as an option; they make it possible to leave the motor in position when removing the rotor unit
  • Shaft deflection meets the requirements of ISO 5199

 

Commissioning

 

  • If pumps with 2900 rpm are installed inside residential buildings, then corresponding noise reducing measures are to be implemented.
  • Pump curves and specific motor powers depend on the respective fluid being pumped. Pump curves and power vary considerably when fluids are conveyed that differ from water in thickness and/or viscosity. For this, please observe the table “Recommended limit values for dimensioning”.
    The recommended limit values for dimensioning are calculated as follows:
    Qoptimum (volume flow at which the pump reaches its best efficiency), to be read from the individual pump curve; factors Qmin and Qmax , to be taken from the table “Recommended limit values for dimensioning”.Qmin dimensioning = Qmin x Qoptimum
    Qmax dimensioning = Qmax x Qoptimum
    Example: Size NL 32-125
    Qmin = 0.3 x 8 = 2.4 m3/h
    Qmax = 1.2 x 8 = 9.6 m3/h
  • Load-sensitive pump output
    All Wilo standard pumps are equipped with IEC standard motors. The Wilo control devices are suitable for automatic load-sensitive speed control of pumps that are driven by any standard motors of conventional manufacture.
  • Main/standby mode

 

Accessories Wilo Pumps

 

Automatic speed control:

for automatic, infinitely variable pump power control. for additional information, see “Switchgears and control devices” section.

 

Note

 

Motors with efficiency class IE3, other voltages and frequencies on request

 

General notes – ErP (ecological design-) directive

 

  • The benchmark for most efficient water pumps is MEI ≥ 0.70
  • The efficiency of a pump with a trimmed impeller is usually lower than that of a pump with the full impeller diameter. The trimming of the impeller will adapt the pump to a fixed duty point, leading to reduced energy consumption. The minimum efficiency index (MEI) is based on the full impeller diameter.
  • The operation of this water pump with variable duty points may be more efficient and economic when controlled, for example, by the use of a variable speed drive that matches the pump duty to the system.
  • Information on benchmark efficiency is available at www.europump.org/efficiencycharts

 

Wilo Pumps - CronoLine IL Series

wilo-pump-2014-cronoline-ILWilo Pumps Design

Glanded wilo pumps in in-line design with flange connection

 

Application in the water Of Wilo Pumps

 

For pumping heating water (in accordance with VDI 2035), water-glycol mixtures and cooling and cold water without abrasive substances in heating, cold water and cooling water systems

 

Type key of Wilo Pumps

 

Example
IL 40/160-4/2
IL In-line pump
40 Nominal diameter DN of the pipe connection
160 Nominal impeller diameter
4 Rated motor power P2 in kW
2 Number of poles

 

Special features/product advantages Of Wilo Pumps

 

  • Reduced life cycle costs thanks to optimized efficiency
  • Standard condensate drainage holes in the motor housings
  • Can be used flexibly in air-conditioning
  • and cooling systems, with application benefits due to direct draining of condensate via optimised lantern design (patented)
  • High standard of corrosion protection thanks to cataphoretic coating
  • High worldwide availability of standard motors (according to Wilo specifications) and standard mechanical seals

 

Technical data

 

  • Minimum Efficiency Index (MEI) to ≥ 0.4
  • Permissible temperature range -20 °C to +140 °C
  • Mains connection 3~400 V, 50 Hz (others on request)
  • Protection class IP 55
  • Nominal diameter DN 32 to DN 250
  • Max. operating pressure 16 bar (25 bar on request)

 

Description/design Of Wilo Pumps

 

Single-stage, low-pressure centrifugal pump in in-line design with

  • Mechanical seal
  • Flange connection with pressure measuring connection R 1/8
  • Lantern
  • Coupling
  • IEC standard motor

 

Materials Wilo Pumps

 

  • Pump housing and lantern: Standard: EN-GJL-250; optionally spheroidal cast iron EN‐GJS‐400‐18‐LT
  • Impeller: Standard: EN-GJL-200; Special version: Red brass G-CuSn 10
  • Shaft: 1.4122
  • Mechanical seal: AQEGG; other mechanical seals on request

 

Scope of delivery

 

  • Pump
  • Installation and operating instructions

 

Options wilo pumps

 

  • L1 variant with red brass impeller (at additional charge)
  • H1 variant with housing made of spheroidal cast iron (at additional charge)
  • P4 variant for maximum operating pressure of 25 bar (see Wilo price list)
  • Motors with efficiency class IE3, other voltages and frequencies, as well as ATEX approval on request

 

Accessories of Wilo Pumps

 

  • Mounting brackets for installation on a base
  • PTC thermistor sensor, PTC resistor tripping relay
  • Special motors
  • Special mechanical seals
  • SC-HVAC, CC-HVAC, VR-HVAC control systems and switchgear

 

General notes – ErP (ecological design-) directive

 

  • The benchmark for most efficient water pumps is MEI ≥ 0.70
  • The efficiency of a pump with a trimmed impeller is usually lower than that of a pump with the full impeller diameter. The trimming of the impeller will adapt the wilo pumps to a fixed duty point, leading to reduced energy consumption. The minimum efficiency index (MEI) is based on the full impeller diameter.
  • The operation of this water pump with variable duty points may be more efficient and economic when controlled, for example, by the use of a variable speed drive that matches the pump duty to the system.
  • Information on benchmark efficiency is available at www.europump.org/efficiencycharts

 

Pompa Grundfos CM PT

Memastikan Kestabilan Tekanan Air diRumah Anda

Pompa Air Grundfos tipeCM PT merupakan pompa air yang andal serta memberikan tekanan air yang stabil untuk memenuhi kebutuhan air yang memadai disetiap rumah.

Tekhnologi modernn saat ini telah menaikkan level kenyamanan disetiap rumah, termasuk kebutuhan akan ketersediaan air yang memadai.

Tekanan air yang diharapkan oleh setiap orang serta aktivitas rumah tangga yang semakin kompleks sudah menjadi kebutuhan mutlak dalam era tekhnologi modern. Selama bertahun-tahun pompa air Grundfos tipe CH PT, yang dikembangkan berdasarkan tekhnologi , telah memberikan solusi serta kenyamanan yang diinginkan dalam kehidupan sehari-hari. Hingga saat ini, di era tekhnologi modern, pompa air Grundfos terus dikembangkan berdasarkan trend dan tekhnologi modern yang berkembang pesat.

Salah satu pengembangan yang paling mutakhir adalah lahirnya generasi terbaru  pompa air Grundfos tipe CM PT Merupakan pompa air yang andal serta memberikan tekanan air yang stabil untuk memenuhi kebutuhan air yang memadai disetiap rumah.

Pompa CM adalah pompa centrifugal, horisontal, non self-priming dirancang untuk aplikasi rumah tangga atau industri ringan.

Cocok untuk air bersih, non korosif dan non eksplosif, tanpa partikel padat ataupun serat.

Desain yang kompak namun memberikan kinerja yang maksimal.

Semua bagian yang dilalui air terbuat dari Stainless steel Aisi 304, bebas dari karat/korosi.

Impeller, Chamber dan Outer dari Pompa CM menjadikan Grundfos unggul secara menyeluruh.

MAXA - MAXANA Series Grundfos

The MAXA/MAXANA ranges comprise single-stage, end-suction stainless steel centrifugal pumps designed for heavy-duty operation in a variety of food and beverage applications Pumps, chemical and industrial processes, and wastewater treatment processes.

The main dimensions pump and characteristics pump correspond to EN 733 / ISO2858
The MAXA pumps are available in a special version with specifications Pumps to hygienic standards. They are CIP/SIP capable and can meet the GMP requirements regarding FDA-approved material (on request).

The main applications pumps are in breweries, the beverage and food industries, and water treatment. However, the MAXA/MAXANA pumps range also meets the requirements of the pharmaceutical industry, surface treatment, the textile industry, etc.

Applications Pumps

  • Gentle pumping of mash and wort for beer filtration (hot side)
  • Liquid transfer in dairies
  • Water and wastewater treatment plants
  • Liquids with high content of solid particles
  • Biofuel applications.

 MAXA and MAXANA-Grundfos

Features and benefits Pumps

  • Greatest possible flexibility
  • Materials: Rolled, deep-drawn steel AISI 316L (1.4404) with electropolished surface
  • Gentle liquid handling for sensitive liquids
  • Optimised hydraulics
  • High efficiency and low energy consumption
  • Wide range of motors
  • Multiple sealing systems
  • Many pumps variants
  • Shrouded pumps
  • Various pipe connection types and sizes
  • Two different impeller types
  • Robust design for heavy duty operation
  • Easy service and maintenance
  • ATEX-certified pumps
  • Tronic (up to 22kw)
  • Flow up to 1200 m3/h

MTR/SPK/MTH/MTA - Grundfos

MTR, SPK, MTH, MTA pump are vertical multistage centrifugal pump designed for pumping of cooling lubricants for machine tools, condensate transfer and similar applications.

The pump are designed to be mounted on top of tanks with the pump stack immerged in the pumped liquid.

Grundfos MTR, SPK, MTH and MTA pump come with various pump sizes and various numbers of stages to provide the flow, the pressure and the length required.

The pumps consist of two main components: The motor and the pump unit. The motor is a Grundfos standard MG motor designed to EN standards.

The pump unit consists of optimised hydraulics, various types of connections, a motor stool, a given number of chambers and various other parts.

Applications Pumps

The immersible pump are suitable for liquid transfer in all applications where you have a tank. As main applications the following can be mentioned:

  • Lathes
  • Milling machines
  • Boring machines
  • Drilling machines
  • Machining centres
  • Grinding machines
  • Filtering systems
  • Swarf conveyors
  • Spark machine tools
  • Industrial washing machines
  • Cooling units.

MTR-SPK-MTH-MTA

Features and benefits Pumps

  • Flexible installation length
  • Wide performance range
  • Reliability
  • Service-friendly

Wilo Pumps - Comfort-N-Vario COR-1 MVISE...-GE

wilo-comfort-N-vario COR-1 MVISE-206-806-GEDesign Pumps

Water-supply pumps units with a non-self-priming glandless high-pressure multistage centrifugal pumps and integrated speed control

 

Application Pumps

  • For fully automatic water supply pumps in inlet mode, either from the public water supply pumps network or from a tank.
  • Pumping of drinking water, process water, cooling water, water for fire-fighting or other water mixtures that do not chemically or mechanically attack the materials used and do not contain abrasive or long-fibre constituents

 

 

 

 

Type key Pumps

Example: Wilo-COR-1 MVISE 206/GE
CO Compact pressure boosting system
R Control by frequency converter
1 With one pump
MVISE Pumps series
2 pumps Rated volume flow of the single pump [m3/h]
06 Number of single-pump stages
GE Basic unit; i.e. without additional control device

 

Special features/product advantages Pumps

 

  • Virtually noiseless system due to glandless stainless steel high-pressure multistage centrifugal pumps with integrated frequency converter
  • Up to 20 dB[A] quieter than conventional systems with comparable hydraulic output
  • Easily adjustable and operationally reliable due to the MVISE pumps series used with integrated dry-running detection and automatic cut-out in event of low water

 

Technical data Pumps

 

  • Mains connection 3~400 V, 50 Hz
  • Fluid temperature max. 50 °C
  • Operating pressure 16 bar
  • Inlet pressure 6 bar
  • Nominal connection diameters Rp 1¼ ‐ Rp 1½
  • Protection class IP 44

 

Equipment/function Pumps

 

  • 1 MVISE series pumps with glandless pump motor and infinitely variable control mode via integrated frequency converter
  • All components in contact with fluid are corrosion resistant
  • Base frame made of galvanised 1.4301 stainless steel, with height-adjustable vibration absorbers for insulation against structure-borne noise
  • Check valve, on the pressure side
  • Non-return valve, pressure side
  • Diaphragm pressure vessel 8 l, PN16

 

Description/design Pumps

 

  • Base frame: Stainless steel with height-adjustable vibration absorbers for comprehensive insulation against structure-borne noise
  • Pipework: complete pressure-side pipework made of stainless steel, suitable for the connection of all piping materials used in building services; the pipework is dimensioned according to the overall hydraulic performance of the pressure boosting system
  • Pumps: 1 pumps from the MVISE 2.., 4.., 8.. series is used; the adapted frequency converter on the pump motor enables continuous auto control for all pumps of these series; all pump components in contact with fluid are made of stainless steel
  • Valves: the pumps is fitted on the pressure side with a check valve with DVGW approval mark and a DVGW-approved non-return valve
  • Diaphragm pressure vessel: 8 l/PN 16 located on the discharge side with a butyl rubber diaphragm, completely safe in accordance with food safety laws; for testing and inspection purposes, with shut-off ball cock, with drain and throughflow fitting according to DIN 4807

 

Materials Pumps

 

  • Foot 1.4301 stainless steel
  • Impellers 1.4301 stainless steel
  • Stage chambers 1.4301 stainless steel
  • Pressure shroud 1.4301 stainless steel
  • Shaft 1.4122 stainless steel
  • Bearing/mechanical seal made of carbon, resin-impregnated
  • Pipework made of 1.4571 stainless steel

 

Scope of delivery pumps

 

  • Factory-mounted, connection-ready pressure boosting system checked for functionality and impermeability
  • Packaging pumps
  • Installation and operating instructions pumps

 

Planning guide pumps

 

Pressure reducer pumps

Fluctuating inlet pressure is compensated by the speed control integrated into each single pumps as long as the pressure fluctuation is not greater than the difference between the setpoint pressure value and the zero-delivery head of the single pumps at minimum speed. If the pressure pumps fluctuation is greater, a pressure reducing valve must be installed upstream of the system.

Residual-current-operated protection switch

When installing residual-current-operated protection switches in conjunction with frequency converters, bear in mind that only universal-current-sensitive residual-current-operated protection switches in accordance with DIN/VDE 0664 are to be fitted.

Inlet pumps pressure

The maximum inlet pressure (see Technical data) must be taken into account when configuring the system. The maximum inlet pressure is calculated from the maximum system operating pressure minus the maximum pumps delivery head at Q = 0.

Only for fire protection systems

Version in accordance with DIN 1988 (EN 806), part 5+6

Always observe the specifications in DIN 1988 (EN 806) when using and operating the pressure boosting system.

Low-water cut-out switchgear (WMS)

The installed Helix VE pump type already has integrated dry-running detection as safety equipment for the pumps.

Electronics/EMC details

  • Single-pumps system up to and including 7.5 kW motor power:
    • Emitted interference in accordance with the specifications in EN 61000-6-3
    • Interference resistance in accordance with the specifications in EN 6100-6-1

Note: Systems to be used in residential buildings must be installed by personnel who have completed EMC training.

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