Dosing

Digital Dosing:
Digital Dosing represents state-of-the-art technology. This patented Grundfos solution sets new standards, including new principles and methods.

Precise and easy setting:
The operator can easily install and set the pump to discharge exactly the quantity of dosing liquid required in the application. In the display, the setting of the pump is read out directly in ml/h or l/h, pulse or batch, and the operation mode is easily identified by means of icons.

Unique technology:
A unique drive and microprocessor control ensure that dosing liquids are discharged precisely and with low pulsation even when the pump is operating with high viscosity or degassing liquids. Instead of the conventional stroke length adjustment, the capacity of the DME is regulated by automatic adjustment of the motor speed during the discharge stroke and by fixed suction stroke speed, ensuring optimal and uniform mixing.

Fewer variants to cover all needs:
The pumps feature a powerful variable speed motor, a turn-down ratio of 1:800 and a complete control interface including:

  • Full pulse control

  • Pulse batch control

  • Internal timer batch control

  • Analog 0/4-20 mA control

  • Level control

  • Fieldbus communication module.

 

This ensures that the DME pumps cover the range from 60 to 940 litres per hour up to 10 bar. The switch mode power supply ensures that the same pump is working precisely, irrespective of the mains supply (100-240 V, 50/60 Hz).
The DME dosing pumps feature diaphragm dosing head with integrated vent valve, suction and discharge ball valves. The pumps are fitted with power cable and plug.

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SL

Introduction:
This data booklet deals with Grundfos heavy-dutywastewater pumps called SE, SL, 9-30 kW.

The 9-30 kW SE, SL pumps are a range of SuperVortex and S-tube® impeller pumps specifically designed for pumping sewage and wastewater in a wide range of municipal, private and industrial applications.
SE pumps are equipped with an internal closed-loop cooling system, which enables them to be dry installed. SL pumps do not have a cooling system as they are used for submersible installations only.
The pumps are made of resistant materials, such as cast iron and stainless steel. These materials ensure proper operation.
The pumps are fitted with motors from 9 kW up to 30 kW. The motors are either 2-, 4- or 6-pole motors, depending on the motor size. The free passage in the pumps is 75 to 160 mm.

The pumps are available for:

  • freestanding submerged installation on ring stand

  • submersible installation on auto-coupling with fully submerged motor

  • submersible installation on auto-coupling with media above pump housing only

  • pumps for vertical dry installation

  • pumps for horizontal dry installation

Fire System

Factory Mutual (FM) and/or Underwriting Laboratories (UL) pumps are used within sprinkler installations to protect a wide range of properties from the effects of fire. There is a vast range of products available for individual property installation requirements. Units are available compliant to the latest National Fire Protection Association (NFPA20) requirements and annexes, with further approvals to either Factory Mutual (FM) Datasheets or listed in the Underwriting Laboratories (UL).

A standard FM/UL set could consist of the following:

  • Diesel pumpset (including pump-end, FM/UL approved diesel engine, 8 hour double walled fuel tank*, 12v lead acid batteries, LCD colour display controller, suction and discharge pressure gauges and air release valve all on a single skid)

  • Jockey pump (Grundfos CR pump achieving a minimum of 1 bar over the closed valve pressure of the proposed duty pump)

  • NFPA20 Jockey pump starter (direct on-line starter)

  • Remote Alarm Panel (for monitoring of signals remote from the pumphouse)

Please note an 8 hour double-walled fuel tank is as per the requirements in Factory Mutual Datasheets. Within NFPA20 a single-walled fuel tank sized to 5.07 litres per kW is acceptable, which is also available upon request.


What standards is this equipment approved / compliant to?

  • NFPA – National Fire Protection Association and Annexes

  • NFPA20 – Standard for the Installation of Stationary Pumps for Fire Protection

  • FM – Factory Mutual Datasheets

  • UL – Underwriting Laboratories

When would I need a FM/UL set?
Within the UK, each building is defined by the criteria of the installation and a relevant insurance body is appointed. If assigned as FM/UL, then a main assessor would be appointed to the site. This is so there is a risk management assessment on each individual application identifying the level of protection required from the sprinkler protection system within specific regions. This assessor may also state that particular regions will not need sprinkler protection if there is no observed fire risk.


Applications:

  • Offices

  • Hospitals

  • Warehouses

  • High rise buildings

  • Museums

  • Shopping centres

  • Supermarkets

  • Large commercial units

  • Industrial premises

  • Industrial processes

  • Oil rigs

 

Benefits:

  • An extensive range of FM/UL giving peace of mind of a solution being available to sites individual requirements.

  • LCD colour display electric and diesel control panel allowing easy to use operation and easy visual indication of current conditions.

  • Print-off and downloadable pump operation logs for easy monitoring of the system.

  • All components within the pumps are independently approved and tested ensuring the product meets the expected high quality.

  • Pumps can be produced in higher grade materials for specific pumped liquids ensuring reduction of corrosion damage and increasing longevity of the product.

  • A wide selection of options and accessories are available including pump housing to facilitate the selection of the correct equipment.
     

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United Engineers Co. - Grundfos

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Address: 102 Saqr Kuraish Bldgs., Sheraton bldgs, Heliopolis, Cairo

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