Submersible sewage pump: FA 50.21D
Motor type: FK 42.1-10/50
Type of impeller: Three-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 50.21D, 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. The motor
chamber and sealing chamber are filled with medical white oil. Motor sealing at the shaft by two wear-resistant mechanical
shaft seals independent of the direction of rotation entirely made of silicon-carbide with intermediate separation chamber.
Both seals are cooled and lubricated by medical white oil. The motor chamber is equipped with a terminal board. Bearing by
two maintenance-free ball bearings; the upper bearing is filled with high-quality grease, the lower bearing is oil-lubricated.
Possibility for retrofitting of a moisture probe be means of a pencil electrode for protection against penetrating humidity.
All casing parts are of cast iron. Shaft and connecting elements 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: Three-channel
Full impeller diameter: 486
Adapted impeller diameter: 486 mm
Free ball passage: 130 mm
Pressure port: DN500
Suction port: DN600
Possible operating modes:
Suspension unit: DN500/2RK
WEIGHTS
Max. weight of the pump part: 1,237 kg
Weight of the motor: 1,345 kg
Max. weight of the unit: 2,686 kg
MATERIALS
Pump housing EN – GJL 250
Stationary wear ring 1.4462/1.4470
Impeller EN – GJL 250
Mobile wear ring 1.4301
Suction ports EN-GJL-250
MOTOR DATA
Rated power: 85 kW
Power consumption of the motor at rated power: 94.4 kW
Current consumption of the motor at rated power: 179.4 A
Number of poles: 10
Rated speed: 700 1/min
Cos phi at rated power: 0.8
Cos phi at start: 0
Efficiency of the motor at rated power: 90 % %
Rated frequency: 60 Hz Hz
Operating mode (VDE 0530): S1
Max. fluid temperature: 40 °C
Starting current for direct starting: 1,000.0 A
Starting current for star-delta starting: 333.3 A
Starting torque: 1,750.1 Nm
Moment of inertia: 4.21 kg m²
Maximum switching frequency: 10
Motor connection line: 2X 4×25 + 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: 702 1/min
Submersible motor in pressure-resistant design, with internal, sealed active circulation cooling and heat exchanger. The motor
chamber and sealing chamber are filled with medical white oil. Motor sealing at the shaft by two wear-resistant mechanical
shaft seals independent of the direction of rotation entirely made of silicon-carbide with intermediate separation chamber.
Both seals are cooled and lubricated by medical white oil. The motor chamber is equipped with a terminal board. Bearing by
two maintenance-free ball bearings; the upper bearing is filled with high-quality grease, the lower bearing is oil-lubricated.
Possibility for retrofitting of a moisture probe be means of a pencil electrode for protection against penetrating humidity.
All casing parts are of cast iron. Shaft and connecting elements of stainless steel. The motor is suitable for continuous
operation (S1) under full load in immerged and completely emerged condition.
