Axial pump submersible without cooling system for continuous duty in pipe chambers in the stationary wet well installation.

Pumping of

• Pre-cleaned sewage without faeces and long-fibre components

• Process water

• Wastewater

• Process water

• Heavy-duty version made of grey cast iron

• Mains connection: 380 V, 50 Hz

• Submerged operating mode: S1

• Protection class: IP68

• Max. fluid temperature: 3 - 40°C; higher temperatures on request

• Free ball passage: 85 – 130 mm.

• Permanently lubricated roller bearings

• Max. immersion depth: 20 m

• Housing components: EN-GJL

• Propellers: Stainless steel

• Sealing on pump side: SiC/SiC

• Sealing on motor side: SiC/SiC

• Static gaskets: NBR

• Shaft: Stainless steel 1.4021

Axial submersible pump as submersible monobloc unit for stationary wet installation

Hydraulics

The angle of the propeller/impeller blades can be adjusted by hand. This makes it possible to adapt the unit to use in different conditions.

Motor

Surface-cooled motors (T motors) give off their heat directly to the surrounding fluid via the housing components and can be used in immersed state for continuous duty.

A sealing chamber protects the motor from fluid ingress. It can be accessed from the outside and can be monitored with an optionally sealing chamber electrode.

All filling fluids used are potentially biodegradable and environmentally safe.

The cable inlet of the T motors is longitudinally watertight. Cable lengths can be individually configured.

Seal

Fluid-side and motor-side sealing is possible in the following versions depending on the motor type:

• Version G: Two independently-acting mechanical seals

• Version K: Block seal cartridge with two independently acting mechanical seals

• Axial submersible pump

• Cable length as per customer request

• Accessories according to customer request

• Operating and maintenance manual

• Special voltages

• PTC thermistor sensor

• Internal or external sealing chamber monitoring

• Monitoring units for leakage and bearing temperature

• Switchgear, relays and plugs

Operation with non-immersed motor:

Surface-cooled motors (T motors) can be non-immersed only if an operating mode is specified for non-immersed operation!

Dry-running protection system:

The hydraulics housing must always be immersed to prevent air from being drawn in. In the case of fluctuating fluid levels, the system should shut down automatically once the minimum water submersion is reached.