Submersible sewage pump: FA 25.74E
Motor type: FK 34.1-8/33
Type of impeller: Single-channel
Type of installation: Suspension device
VERSION
Submersible sewage pump as a submersible, single-stage monobloc unit in stationary, vertical installation, for pumping untreated sewage that does not attack the pumps either chemically or mechanically. Pump with radially arranged discharge port and axial pump inlet. Unit structure is easy to service due to split motor and pump housing unit.
The pumping values must be guaranteed in accordance with ISO 9906 Annex A.
For the pump type FA 25.74E, the version type also depends on the motor!
Please select a motor in the drop-down menu on the right and read the relevant description:
Submersible motor in pressure-resistant design, with internal, sealed, active circulation cooling and heat exchanger, double
mechanical shaft seal in EMU block design as well as separate sealing chamber. The motor chamber and sealing chamber are
filled with medical white oil.
Motor sealing at the shaft by a double, wear-resistant mechanical shaft seal independent of the direction on rotation entirely
made of silicon-carbide as closed unit, in EMU sealing cartridge of stainless steel with intermediate separation chamber. Both
seals are cooled and lubricated by medical white oil. The motor chamber is equipped with a terminal board. The motor is
equipped with two maintenance-free ball bearings.
The upper bearing is filled with high-quality grease, the lower bearing is oil-lubricated. Possibility for retrofitting a moisture
probe by means of a pencil electrode for protection against penetrading humidity. All casing parts are of cast iron.
Shaft and connecting elements are of stainless steel. The motor is suitable for continuous operation (S1) under full load in
immerged and completely emerged condition.
PUMP PART DATA
Type of impeller: Single-channel
Full impeller diameter: 480
Adapted impeller diameter: 480 mm
Free ball passage: 140 mm
Pressure port: DN250
Suction port: DN250
Possible operating modes:
Suspension unit: DN250/2R
WEIGHTS
Max. weight of the pump part: 310 kg
Weight of the motor: 667 kg
Max. weight of the unit: 977 kg
MATERIALS
Pump housing EN-GJL-250
Stationary wear ring 1.4308
Impeller EN-GJL-250
Mobile wear ring 1.4462/1.4470
Suction ports EN-GJL-250
MOTOR DATA
Rated power: 40 kW
Power consumption of the motor at rated power: 45.2 kW
Current consumption of the motor at rated power: 145.5 A
Number of poles: 8
Rated speed: 870 1/min
Cos phi at rated power: 0.78
Cos phi at start: 0
Efficiency of the motor at rated power: 88.5 % %
Rated frequency: 60 Hz Hz
Operating mode (VDE 0530): S1
Max. fluid temperature: 40 °C
Starting current for direct starting: 740.0 A
Starting current for star-delta starting: 246.7 A
Starting torque: 880.0 Nm
Moment of inertia: 0.859 kg m²
Maximum switching frequency: 10
Motor connection line: 2X 4×16 + 4×1,5 NSSHÖU
Maximum possible motor connection line: 4×50
DUTY POINT DATA
Volume flow:
Delivery head:
Power consumption of the pump at duty point (P2):
Pump efficiency at duty point: %
Power consumption of the motor at duty point (P1):
NPSH value of the pump at duty point:
Speed at duty point: 873 1/min
Submersible motor in pressure-resistant design, with internal, sealed, active circulation cooling and heat exchanger, double
mechanical shaft seal in EMU block design as well as separate sealing chamber. The motor chamber and sealing chamber are
filled with medical white oil.
Motor sealing at the shaft by a double, wear-resistant mechanical shaft seal independent of the direction on rotation entirely
made of silicon-carbide as closed unit, in EMU sealing cartridge of stainless steel with intermediate separation chamber. Both
seals are cooled and lubricated by medical white oil. The motor chamber is equipped with a terminal board. The motor is
equipped with two maintenance-free ball bearings.
The upper bearing is filled with high-quality grease, the lower bearing is oil-lubricated. Possibility for retrofitting a moisture
probe by means of a pencil electrode for protection against penetrading humidity. All casing parts are of cast iron.
Shaft and connecting elements are of stainless steel. The motor is suitable for continuous operation (S1) under full load in
immerged and completely emerged condition.
