Submersible Pump GRUNDFOS DWK dewatering pumps are designed with an enclosed, semi-open or Super Vortex, free-flow impeller for use in a wide range of building and industrial applications. Range is 0.75-90 kW.
PRDUCT DESCRIPTION :
- The compact design makes the pump suitable for both temporary and permanent installation.
- GRUNDFOS DWK Series is cast iron, with vertical discharge port and integrated submersible 3-phase totally enclosed motor in insulation class F (155°C).
- Has a rise pipe, a double mechanical seal and semi-open impeller type
- Equipped with a temperature Bi-metal sensor for motor protection in case of overheating and electrode seal sensor to detect water penetration in to the motor housing.
- Fitted with suction strainer, lifting handle and 10 m cable.
APPLICATION :
Submersible Pump GRUNDFOS DWK is suitable for pumping :
- large quantities of underground and surface water
- drainage water at high head
- water with dirt from drainage pits
TECHNICAL DATA :
- Liquid:
Liquid temperature range: 0 .. 40 °C
Selected liquid temperature: 20 °C
Density: 998.2 kg/m³ - Technical:
Rated flow: 29.1 l/s
Maximum flow: 33.1 l/s
Rated head: 27.19 m
Actual impeller diameter: 186 mm
Type of impeller: Open impeller
Max. Particle: 13 mm
Max. hydraulic efficiency: 59 %
Curve tolerance: NONE - Materials:
Pump housing: Cast iron
Impeller: Ductile cast iron
Motor house: Cast iron
Shaft seal: SIC
Secondary shaft seal: CERAMIC-CARBON - Installation:
Range of ambient temperature: 0 .. 40 °C
Maximum operating pressure: 5.7 bar
Type of outlet connection: DIN
Size of outlet connection: DN 150
Pressure rating for outlet connection: PN 10
Maximum installation depth: 25 m - Electrical data:
Power input P1: 16.7 kW
Rated power – P2: 15 kW
Mains frequency: 50 Hz
Rated voltage: 3 x 220-240 V
Voltage tolerance: +10/-10 %
Max starts per hour: 30
Rated current: 47.3 A
Cos phi – power factor: 0.92
Rated speed: 2850 rpm
Efficiency at full load: 89.8 %
Number of poles: 2
Method of start: Y/D
Enclosure class (IEC 34-5): IP68
Insulation class (IEC 85): F
Explosion proof: no
Built-in motor protection: PTO
Power cable type: PNCT
Length of power cable: 10 m
