Features/Product Advantages:

- Customizable to specific requirements, ensuring reliable and efficient transport of pre-treated or untreated sewage;
- Highly flexible: capable of continuously and stably transporting sewage with varying characteristics using a range of impeller types;
- Exceptionally high system reliability due to the standard inclusion of a motor monitoring system.

Construction

Submersible sewage pump designed for continuous operation in a stationary wet-well installation; does not require an external cooling system.

Applications

Untreated sewage containing fecal matter and long-fiber components (depending on impeller type)
Sewage containing fecal matter
Pre-screened sewage (free of fecal matter and long-fiber components)
Process water
Wastewater

Equipment/Functions

Heavy-duty version made of grey cast iron
Surface-cooled motor (non-jacket cooled)
Motor monitoring devices:
Winding temperature
Moisture monitoring in the seal chamber and motor/terminal compartment
Motor bearing temperature

Technical Data

Power connection: 3~380V, 50Hz
Submerged operation mode: S1
Non-submerged operation mode: -
Protection class: IP68
Insulation class: F
Fluid temperature: 3...40°C
Free ball passage: 80...150 mm
Max. immersion depth: 20 m

Materials

Pump housing: Grey cast iron
Impeller: Grey cast iron
Static gaskets: Nitrile rubber
Fluid-side seal: Mechanical seal (SiC/SiC)
Motor-side seal: Mechanical seal (SiC/SiC)
Motor housing: Grey cast iron
Shaft: Steel

Type

Submersible sewage pump designed as a complete submersible unit for stationary wet-well installation.

Hydraulics

Centrifugal hydraulic system with various impeller options; horizontal flanged discharge connection. Maximum permissible dry matter content is 8%, depending on the hydraulic system and impeller type. Impeller types:

Vortex impeller (V)
Channel impeller (C)
Multi-channel impeller (M)
Solid impeller, enclosed (T)
Solid impeller, semi-open (G)

Motor

Surface-cooled motor. The motor is cooled by the surrounding fluid; heat is transferred directly from the motor housing to the fluid. The motor must operate in a submerged state. It is not suitable for non-submerged operation.

Connection cable with bare (free) ends. Standard length is 12 m; custom lengths available upon request.

Monitoring devices

Motor/terminal compartment monitoring – internal moisture probes detect moisture in the motor and terminal compartments.
Motor thermal monitoring – protects motor windings from overheating. PTC sensors are standard.
Seal chamber monitoring – internal moisture probe detects water in the seal chamber.
Bearing thermal monitoring – protects motor bearings from overheating. Pt100 sensors are standard.

Sealing

The motor compartment is sealed against the fluid by two independent mechanical seals. The seal chamber between the mechanical seals is filled with medical-grade white oil.

Scope of delivery

Submersible sewage pump with 12 m connection cable
Installation and operating instructions

Options

Special voltages and 60 Hz versions available upon request
Winding monitoring using Pt100 sensors
Custom cable lengths
VFD operation available upon request

Accessories

Suspension unit
Chain
Mounting kit
Switchgear and relays

Commissioning

Operation without submersion

Surface-cooled motors are not suitable for non-submerged operation. In applications with fluctuating liquid levels, the system should shut down automatically when the minimum water level is reached.