Wilo-Vardo WEEDLESS-VM | Wilo

Wilo-Vardo WEEDLESS-VM

Wilo-Vardo WEEDLESS - thrust direction to the basin floor

Your advantages

Optimum agitation in basins of different designs
Wear-resistant propeller material ensures process reliability
Customised building connection ensures easy installation for existing systems
Standard IE3 and IE4 motors ensure low energy consumption
System-specific thrust direction with flow direction to the basin floor or to the medium surface
System-specific dimensioning

Recommended services

Product features

Standard-equipped IE3/IE4 motors for optimal thrust/power
Stainless steel mixer shaft
2-/3-blade propeller diameters in variety of diameters
Adjustable angle of attack to customise the flow direction
Low-wearing propeller material

Design

Low-speed vertical mixer with gear motor for stationary installation.

Liquid

For suspension and homogenisation in commercial areas of:

Process sewage
Sewage containing faeces
Wastewater (with small amounts of sand and gravel)
Sludge

Equipment/function

Drive unit
Motor plate
Mixer shaft
Hub
Propeller blade

Typekey

Example:	Wilo-Vardo WEEDLESS-VM.F7-1/325.39-400Ex
Vardo	Mixer, vertical with standard motor
WEEDLESS	Series with gear motor
VM.F	Version: securely attached
7	Size
1	Model
3	Number of propeller blades
25	x100 = nominal propeller diameter
39	Propeller speed
400	/100 = rated power in kW
Ex	Ex-rated

Technical data

Mixer

Thrust: 115 ... 4315 N
Propeller diameter: 1.50/2.00/2.50 m
Diameter of mixer shaft: 70 ... 114 mm
Shaft length: from 2 m
Fluid temperature: 3 … 40 °C

Drive unit

Mains connection: 3~400 V, 50 Hz/3~460 V, 60 Hz
Drive power: 0.37 … 7.50 kW
Operating mode: S1
Protection class: IP55, with protective fan cover
Insulation class: F (155 °C)
Ambient temperature: -20 … +40 °C
Motor efficiency class: IE3 and IE4

Materials

Drive unit

Motor housing: EN-AC
Gear housing: EN-GJL-200 (ASTM A48 Class 30)
Output shaft: Steel (C45)
Motor plate: Stainless steel A4 (AISI 316L/316Ti)

Hydraulics

Mixer shaft: Stainless steel A4 (AISI 316L/316Ti)
Rotary shaft seals: FKM
Hub: PUR/A4 (AISI 316L/316Ti)
Propeller blades: PUR
Cover cap: PUR

Construction

Low-speed vertical mixer with gear motor for stationary installation.

Drive unit

IE3/IE4 gear motor for continuous operation with mixer lantern and additional bearing. The available rated power of the motor is between 0.37 kW and 7.5 kW.

Motor plate

The motor plate connects the drive unit to the structure. For this purpose, the motor plate is available in three versions. If required, the motor plate can be designed according to the system-specific requirements.

Mixer shaft

Mixer shaft made of thick-walled hollow steel. The mixer shaft is connected to the gear motor by a shrink disc. The hub is mounted on the other end of the mixer shaft via two clamping sets.

Propeller

2-blade or 3-blade propeller made of solid material. The nominal diameter of the propeller is 1500, 2000 or 2500 mm. Each propeller blade is attached to the hub. The setting angle of the propeller blade is determined in the process. The direction of thrust can be directed towards the water surface of basin floor. A cover cap is fitted to the hub to protect the hub and propeller fixture from dirt and corrosion.

Scope of delivery

Vertical mixer with motor plate, mixer shaft and hub
Propeller blades packed individually, installation on-site
Operating and maintenance manual

Options

Motor version:
- Ex-rated in accordance with FM
- Special voltages
- Thermal motor monitoring using bimetallic or PTC sensors
Design of the motor plate according to system-specific requirements

Installation and operating instructions