Design
Submersible sewage pump
Application
- Pumping of sewage with solid constituents in water treatment systems and pumping stations
- Local drainage, water control and process water extraction
- Applications in construction and industry
Technical data
- Mains connection: 3~400 V, 50 Hz
- Immersed operating mode: S1
- Surfaced operating mode: S1, S2-15 or S2-30 (depending on type)
- Thermal motor monitoring
- Protection class: IP 68
- Insulation class: F
- Fluid temperature: 3 ‐ 40 °C
- Cable length: 10 m
- Free ball passage from 45 mm to 100 mm
- Permanently lubricated roller bearings
- Max. immersion depth: 20 m
Equipment/function
- Stationary dry well installation possible for short-term operation, S1 and S2 (depending on type)
- Heavy-duty version made of cast iron
- Simple installation via suspension unit or pump base
Description/design
Submersible sewage pump as submersible monobloc unit for stationary and portable wet well installation.
Hydraulics
The outlet on the pressure side is designed as horizontal flange connection. The maximum possible dry matter content is 8%, depending on the hydraulics and impeller type.
The following impeller shapes are used:
- Vortex impeller (W)
- Single-channel impeller (E)
Each single-channel hydraulic system (E) is equipped with a counter ring and stationary wear ring made of hardened material (except for FA 08.41E). These ensure the consistently high efficiency of the unit for a long duration.
Motor
Dry motors (T motors) give off their heat directly to the surrounding fluid via the housing components and can be used in immersed state for permanent operation. Depending on the size, they can also be used in non-immersed state for short-term operation.
All motors have a sealing chamber that protects the motor from fluid ingress. It can be accessed from the outside and can be monitored with an optional sealing chamber electrode.
All filling fluids used are potentially biodegradable and environmentally safe.
The cable inlet of the dry motors is longitudinally watertight. The cable length is 10 m.
Sealing
Fluid-side and motor-side sealing is possible in the following versions depending on the motor type:
- Version H: Mechanical seal for the fluid side, rotary shaft seal for the motor side
- Version G: Two independently operating mechanical seals
Materials
- Pump housing: EN-GJL-250
- Impeller: EN‐GJL or EN‐GJS
- Static seals: NBR
- Mechanical seal on pump side: SiC/SiC
- Mechanical seal on motor side: SiC/SiC (depending on type)
- Rotary shaft seal on motor side: NBR (depending on type)
- Motor housing: EN-GJL-250
- Shaft: Stainless steel 1.4021
Accessories
- Suspension unit or pump base
- Various pressure outlets and Storz couplings
- Chains
- Switchgears, relays and plugs
