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Wilo-Rexa NORM | Wilo
Your advantages
Wilo-RexaNorm RE

Your advantages

  • Easy impeller replacement due to "Back-Pull-Out" design and spacer coupling as standard. This makes it possible to uninstall the impeller without dismantling the hydraulics from the pipeline and the motor from the baseplate.
  • Shut "Back-Pull-Out" unit: Dismantling without draining the oil in the sealing chamber.
Series description
Wilo-Rexa NORM

Design

Sewage pump for stationary dry well installation in continuous operation in two versions:

  • Unit: Hydraulics with standard motor, connected via coupling, fully mounted on baseplate
  • Bare shaft: Hydraulics mounted on baseplate, coupling pre-assembled

Application

Pumping of

  • Untreated sewage
  • Sewage containing faeces
  • Process water
  • Wastewater

Equipment/function

  • Winding temperature with PTC or Pt100 sensor (motor dependent)
  • Optional external pencil electrode for the sealing chamber monitoring

Typekey

Example:

Wilo-Rexa NORM-E25.74-480DAH315S6

Rexa

Sewage pump

NORM

Hydraulics with standard motor, connected via coupling, fully mounted on baseplate

E

Type of impeller:

  • E = Single-channel impeller
  • Z = Two-channel impeller
  • D = Three-channel impeller
  • M = Multi-channel impeller

25

Nominal diameter of pressure connection, e.g. DN 250

74

Performance indicator

480

Impeller diameter

D

Version flange hole:

  • D = DIN
  • A = ANSI

A

Standard material version

H

Type of installation: Horizontal

315S

Construction size standard motor

6

Number of poles (nominal speed of the hydraulics)

Technical data

Hydraulics:

  • Fluid temperature: 3…70 °C
  • Ambient temperature: 3…40 °C

Motor:

  • IEC standard motor, connection B3
  • Operating mode: S1
  • Protection class: IP55
  • Insulation class: F
  • Motor efficiency class: up to IE4

Materials

  • Hydraulics housing: EN-GJL 250
  • Impeller: EN-GJL 250
  • Hydraulics shaft: Stainless steel 1.4021
  • Bearing bracket: EN-GJL-250
  • Static gaskets: NBR
  • Sealing on pump side: SiC/SiC
  • Sealing on motor side: NBR
  • Coupling: Stainless steel
  • Baseplate: EN-GJL 250 or steel (dependent on type)

Construction

Hydraulics

Hydraulic system with axial suction ports, radial discharge ports and bearing brackets as a single unit. The connections are configured as flange connections.

Seal

Bearing bracket with sealing and leakage chamber for admission of fluid ingress via the seal. Fluid-side seal via a bidirectional mechanical seal, coupling-side seal as a rotary shaft seal. The sealing chamber is filled with medical white oil, the leakage chamber is shut up to the coupling. Optionally, the sealing chamber can be monitored with an external pencil electrode.

Motor

IEC standard motor version B3 permanently connected with the hydraulics via spacer coupling. Three-phase current motor with thermal motor monitoring and motor efficiency class up to IE4.

Delivery state

  • Sewage pump as a unit:
    • Hydraulics
    • Standard motor in three-phase version without connection cable
    • Fully mounted on baseplate and connected via a coupling
    • Installation and operating instructions

  • Sewage pump as a bare shaft:
    • Hydraulics mounted on baseplate
    • Coupling pre-assembled
    • Installation and operating instructions
Downloads

Installation and operating instructions

Wilo-Rexa NORM/RexaNorm RE

Article Number 6081510
Edition 2021-04
Page format 209.9 x 297.0 mm
Number of pages 32
PDF (5 MB)

General overview (Documents)

General overview 2019 International version

Article Number 2200591
Edition 2018
Page format 209.9 x 297.0 mm
Number of pages 74
PDF (40 MB)

General overview 2021 International version

Edition 2020
Page format 209.9 x 297.0 mm
Number of pages 74
PDF (10 MB)

Certification booklet

Certification booklet Wilo-RexaNorm RE, Wilo-Rexa NORM, Wilo-RexaNorm RE (Bare shaft), Wilo-Rexa NORM (Bare shaft)

Article Number 6074550
Edition 2021-05
Page format 209.9 x 297.0 mm
Number of pages 24
PDF (4 MB)

Certificate REACH (Documents)

REACH Regulation

Edition 2021-05
Page format 209.9 x 297.0 mm
Number of pages 4
PDF (212 KB)