Wilo-EMU FA (customised) | Wilo

Wilo-EMU FA (customised)

Your advantages
Wilo-EMU FA (customized)

Your advantages

  • Can be tailored to suit your exact requirements. For reliable and efficient pumping of pre-treated sewage and untreated sewage.
  • Versatile. Optimum pumping of various fluids at all times using different impeller shapes.
  • Energy-efficient thanks to optional IE3 motor technology
  • Protected against abrasion and corrosion with Ceram coating and special materials
  • Suitable for immersed and non-immersed applications, even in continuous duty
Series description
Wilo-EMU FA 08 - FA 15 (customized) [50 Hz, 180x100 mm]


Submersible sewage pump with and without active cooling system for continuous duty in the stationary and portable wet well installation, as well as for stationary dry well installation.


Pumping of

  • Untreated sewage with faeces and long-fibre components
  • Sewage containing faeces
  • Pre-cleaned sewage without faeces and long-fibre components
  • Process water
  • Wastewater


  • Heavy-duty version made of grey cast iron
  • Surface-cooled motor or self-cooling motor with 1-chamber or 2-chamber system
  • Optionally with Ex protection in accordance with ATEX or FM
  • Motor-dependent monitoring devices:
    • Winding temperature
    • Moisture monitoring in the sealing chamber and motor/terminal room
    • Motor bearing temperature
  • Installed accessories according to customer requirements

Scope of delivery

  • Submersible sewage pump ready for connection
  • Connection cable with bare cable end
  • Fitted accessories
  • Operating and maintenance manual

Type key


Wilo-EMU FA 20.54E + FK 17.1-6/16KEx


FA 20.54E


Submersible sewage pump


x10 = nominal diameter pressure connection, e.g. DN 200


Performance indicator


Type of impeller:

W = Vortex impeller

E = Single-channel impeller

Z = Two-channel impeller

D = Three-channel impeller

V = Four-channel impeller


FK 17.1-6/16KEx


Motor type:

T = surface-cooled motor without cooling system

FK, FKT, HC = self-cooling motor with active cooling system




Number of poles


x10 = package length in mm


Seal version:

H = rotary shaft seal/mechanical seal

G = two separate mechanical seals

K = block seal cartridge with two mechanical seals



Technical data

  • Mains connection: 3~400 V, 50 Hz
  • Submerged operating mode: S1
  • Non-immersed operating mode: S1 or S2
  • Protection class: IP68
  • Insulation class: H
  • Fluid temperature: 3…40 °C, higher temperatures on request
  • Free ball passage of 45...130 mm
  • Max. immersion depth: 20 m


  • Housing components: EN-GJL or EN-GJS
  • Impeller: EN-GJL or EN-GJS
  • Static gaskets: NBR or FPM
  • Fluid-side seal: Mechanical seal made of SiC/SiC
  • Seal on the motor side:
    • Rotary shaft seal NBR
    • Mechanical seal made of SiC/SiC or carbon ceramic
  • Shaft: Stainless steel 1.4021


Submersible sewage pump as submersible monobloc unit for stationary and portable wet well and dry well installation.


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)
  • Two-channel impeller (Z)
  • Three-channel impeller (D)
  • Four-channel impeller (V)

The sewer hydraulics are equipped with an impeller wear ring and casing wear ring made of hardened material. These contribute long-term to ensuring the uniform efficiency of the unit and minimizing maintenance costs.


Surface-cooled motors (T motor) do not have a cooling system of their own and emit their heat directly to the surrounding fluid via the housing parts. The motors can therefore be used in immersed state for continuous duty. Depending on their size, they can also be used in non-immersed state for short-time duty.

The self-cooling motors (FK, FKT, HC motors) have an active cooling system and transfer their waste heat to the medium being pumped by means of an integrated heat exchanger. Therefore, these motors are suitable for continuous duty in immersed and non-immersed condition, and therefore also for dry well installation.

All motors have a sealing chamber that protects the motor from fluid ingress. It can be accessed from the outside and can optionally be monitored with a rod electrode. All filling fluids used are potentially biodegradable and environmentally safe.

The connection cable has bare cable ends and a length of 10 m or a customer-specific length. The cable inlet on T, HC and FKT motors is longitudinally watertight.


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

High efficiency motors

In addition to the standard motors, high-efficiency motors with IE3 classification (in accordance with IEC 60034-30) are also available. As these have the same basis as the standard motors, they have the same features and functions. This means that the same hydraulic systems are also available.

Ex rating

The motors are available with Ex rating in accordance with ATEX and FM.


Installation and operating instructions

Wilo F motor: EMU FA

Article Number 6074814
Edition 2018-01
Page format 209.9 x 297.0 mm
Number of pages 196
PDF (4 MB)

Certificate REACH (Documents)

REACH regulation

Edition 2020-08
Page format 209.9 x 297.0 mm
Number of pages 2
PDF (158 KB)