Vortex pump EMU FA series

wastewaterwith asynchronous motorsubmersible

Overview

• 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.

Design
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.

Application

• 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

Equipment / Function

• 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

Type key (summary)
Example: Wilo-EMU FA 20.54E + FK 17.1-6/16KEx
Hydraulics: FA 20.54E
FA: Submersible sewage pump
20: x10 = nominal diameter discharge port, e.g. DN 200
54: Performance indicator
E: Type of impeller: W = Vortex impeller; E = Single-channel impeller; Z = Two-channel impeller; D = Three-channel impeller; V = Four-channel impeller
Motor: FK 17.1-6/16KEx (example)
FK: Motor type: T = surface-cooled motor without cooling system; FK, FKT, HC = self-cooling motor with active cooling system
17.1: Size
6: Number of poles
16: x10 = package length in mm
K: Seal version: H = rotary shaft seal/mechanical seal; G = two separate mechanical seals; K = block seal cartridge with two mechanical seals
Ex: Ex-rated (if applicable)

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)
• 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 to ensure uniform efficiency and minimize maintenance costs.

Motor
Surface-cooled motors (T) emit heat directly to the surrounding fluid via the housing parts and are suitable for continuous duty when immersed. Self-cooling motors (FK, FKT, HC) have an active cooling system (integrated heat exchanger) and are suitable for continuous duty in immersed and non-immersed conditions, including dry well installation. All motors have a sealing chamber accessible from the outside and optionally monitorable. Connection cable has bare cable ends (standard length 10 m or customer-specific).

Seal
Fluid-side and motor-side sealing is available in the following variants depending on motor type:

• Version H: Mechanical seal for fluid side, rotary shaft seal for motor side
• Version G: Two independently-acting mechanical seals
• Version K: Block seal cartridge with two independently-acting mechanical seals

High efficiency motors
High-efficiency motors with IE3 classification (IEC 60034-30) are available as an option; they share the same features and functions as standard motors and can be combined with the same hydraulics.

Ex rating
Motors are available with Ex rating in accordance with ATEX and FM.

Scope of delivery

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

Options

• Special voltages
• Winding monitoring with PTC thermistor sensor
• Monitoring devices for sealing chamber, motor/terminal room and storage temperature
• Ceram coating for abrasive and corrosive fluids
• Ex-rated according to ATEX or FM

Accessories

• Suspension unit or pump support foot
• Various pressure outlets and Storz couplings
• Chains
• Fixation sets with anchor bolts
• Switchgear, relays and plugs

Caractéristiques / spécifications techniques

• Mains connection: 3~400 V, 50 Hz
• Submerged operating mode: S1
• Non-immersed operating mode: S1 or S2
• IP rating: IP68
• Insulation class: H
• Fluid temperature: 3…40 °C (higher temperatures on request)
• Free ball passage: 45...130 mm (depending on model)
• 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
• Shaft: Stainless steel 1.4021
• Maximum dry matter content (depending on hydraulics and impeller type): up to 8%