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Wilo-Rexa PRO-S | Wilo

Wilo-Rexa PRO-S

Efficient submersible sewage pump in non-clog design with macerator for reliable pressure drainage in commercial and municipal applications.

Your advantages
Wilo-Rexa PRO-S

Efficient submersible sewage pump in non-clog design with macerator for reliable pressure drainage in commercial and municipal applications.

The Wilo-Rexa FIT-S grinder pump ensures reliable pressure drainage in accordance with EN 12050-1 in commercial applications. The radial macerator with double shear effect reliably chops the solids. Clogging is prevented and safe operation is ensured. In addition, the overall costs are significantly minimised. Firstly, the optimised hydraulics provide a high degree of efficiency along with the maximum delivery head. Secondly, the smallest possible pipework can be connected. The high-quality stainless steel motor is light and easy to maintain. On the other hand, the motor is extremely corrosion-resistant, even when the motor is non-immersed. A high-quality seal with two mechanical seals ensures a long service life.


Your advantages

  • Excellent anti-clogging reliability due to radial macerator with double shear effect
  • Optimised hydraulics/macerator combination for a wide coverage of delivery head
  • Low overall installation costs thanks to the use of smallest possible piping
  • Designed for an easy selection covering the needs of various building types
  • Long service life due to high-quality motor with two mechanical seals and optional sealing chamber monitoring
  • High corrosion resistance, even with non-immersed motor, thanks to stainless-steel motor housing
Series description
Wilo-Rexa PRO-S

Design

Fully submersible grinder pump for stationary and portable wet well installation in continuous operation.

Liquids

For pumping in commercial areas of:

  • Sewage containing faeces
  • Wastewater (with small amounts of sand)

Sewage pumping according to (DIN) EN 12050

The pumps meet the requirements of DIN EN 12050-1.

Equipment/function

  • Radial macerator with double shear effect
  • ATEX approval
  • Thermal motor monitoring with bimetallic strip
  • Moisture monitoring in the motor
  • Connection cable with bare cable ends
  • Single-phase AC motor with separate capacitor switchgear

Typekey

Example:

Rexa PRO-S03-112A/21T011X540/O

Rexa

Submersible sewage pump

PRO

Series

S

Macerator

03

Nominal diameter of the discharge connection: DN 32/40

112

Hydraulics type

A

Material version: Standard

2

No. of poles

1

IE class

T

Mains connection version:

  • M = single-phase current (1~)
  • T = three-phase current (3~)

11

Value/10 = rated power P in kW

X

Ex rating

5

Mains frequency: 5 = 50 Hz/6 = 60 Hz

40

Key for rated voltage

O

Additional electrical equipment:

  • O = with bare cable end
  • P = with plug

Technical data

  • Mains connection: 1~230 V, 50 Hz or 3~400 V, 50 Hz
  • Submerged operating mode: S1
  • Non-immersed operating mode: S2-30 min; S3 25%*(* From a rated power of 5 kW: S3 10%)
  • Protection class: IP68
  • Insulation class: F
  • Fluid temperature: 3 … 40 °C (37 … 104 °F)
  • Fluid temperature, max. 60 °C (140 °F) for 3 min

Materials

  • Pump housing: EN-GJL-250 (ASTM A48 Class 35/40B)
  • Impeller: EN-GJL-250 (ASTM A48 Class 35/40B)
  • Macerator: 1.4528/59 HRC (AISI 440B+Co)
  • Motor housing: EN-GJL-250 (ASTM A48 Class 35/40B)
  • Shaft:
    • Up to 2.5 kW: 1.4401 (AISI 316)
    • From 3.9 kW: Stainless steel AISI 1.4021 (420)
  • Seal on the motor side: C/MgSiO
  • Seal on the fluid side: SiC/SiC
  • Seal, static: NBR (nitrile)

Construction

Rexa PRO-S .../M .../O

Sewage pump with radial macerator with double shear effect. Horizontal discharge port with flange and oval connection. Hydraulics housing and impeller made of grey cast iron; macerator made of hardened cutting steel. Surface-cooled 1~ motor with thermal motor monitoring and moisture probe. Oil-filled sealing chamber with two mechanical seals. Motor housing made of grey cast iron. Detachable connection cable with capacitor box and bare cable ends. Unit with Ex-rating as standard.

Rexa PRO-S .../T .../O

Sewage pump with radial macerator with double shear effect. Horizontal discharge port with flange and oval connection. Hydraulics housing and impeller made of grey cast iron; macerator made of hardened cutting steel. Surface-cooled 3~ motor with thermal motor monitoring and moisture probe. Oil-filled sealing chamber with two mechanical seals. Motor housing made of grey cast iron. Detachable connection cable with bare cable ends. Unit with Ex-rating as standard.

Scope of delivery

  • Pump
  • Installation and operating instructions
Documents

Installation and operating instructions

Wilo-Rexa PRO-S

Article Number 6092606
Edition 2022-03
Page format 209.9 x 297.0 mm
Number of pages 40
PDF (5 MB)

General overview

General Overview 2022 - International version

Edition 2022
Page format 209.9 x 297.0 mm
Number of pages 78
PDF (38 MB)

Brochure

Wilo grinder pumps - Chopping solids for more operational reliability.

Page format 209.9 x 297.0 mm
Number of pages 12
PDF (3 MB)

Certificate REACH

REACH Regulation

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