Design 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.