Wilo-Rexa CUT

Special features/product advantages

  • High reliability through ATEX approval and longitudinally watertight cable inlet (CUT GE…)
  • High operational reliability through spherically-formed macerator with pulling cut
  • Long service life through a high-quality motor seal with two independent mechanical seals and optional pencil electrode for sealing chamber control

Series description

Design

Submersible sewage pump with macerator for intermittent duty and continuous duty, for stationary and portable wet well installation.

Application

Pumping of

  • Sewage containing faeces in accordance with (DIN) EN 12050-1
  • Wastewater

Type key

Example:Wilo-Rexa CUT GE03.26/P-T15-2-540X/P
RexaSubmersible sewage pump with retrodynamic hydraulics
CUTSeries with macerator
GEHydraulics version:
GI = interior macerator
GE = external macerator
03Nominal diameter pressure connection:
03 = DN 32
04 = DN 40
26Zero-delivery head in m
PMotor version:
S = stainless steel motor housing
P = cast iron housing
TMains connection version:
M = 1~
T = 3~
15Value/10 = motor power P2 in kW
2Number of poles
5Frequency (5 = 50 Hz, 6 = 60 Hz)
40Code for rated voltage
XEx-rated
Without supplement = without Ex-rated
X = with Ex-rated
PAdditional electrical equipment:
without addition = with bare cable end
P = with plug

Technical data

  • Mains connection: 1~230 V, 50 Hz or 3~400 V, 50 Hz
  • Immersed operating mode: S1
  • Non-immersed operating mode: S2-15 min/S2-30 min; S3 10%/S3 25% (motor-dependent)
  • Protection class: IP 68
  • Insulation class: F
  • Fluid temperature: 3…40 °C, max. 60 °C for 3 min
  • Max. immersion depth: 20 m
  • Cable length: 10 m

Equipment/function

  • Macerator with internal or external blade and pulling cut
  • Winding temperature monitoring with bimetallic strip
  • ATEX approval (with motor version "P")
  • Optional external pencil electrode for the sealing chamber monitoring

Description/design

Submersible sewage pump with internal or external macerator as submersible monobloc unit for stationary and portable wet well installation in intermittent and continuous duty.

Hydraulics

The outlet on the pressure side is designed as horizontal flange connection with a DN 32/40 combined connection. The maximum possible dry matter is 8 % (depending on the hydraulics) Single-channel and multi-channel impellers are used.

Motor

Single-phase and three-phase current surface-cooled motors for direct starting are used as the motors. The waste heat is given off directly to the surrounding fluid via the motor housing. These motors can operated immersed in continuous duty (S1) and non-immersed in short-time duty (S2) or intermittent operation (S3).

The motors are equipped with a thermal winding monitor. This protects the motor windings against overheating. Bimetallic strips are used for this as standard. Motors in the P-version are also equipped with motor compartment monitoring. The humidity electrode signals water ingress into the motor compartment.

Furthermore, the motor can also be fitted with an external pencil electrode to monitor the sealing chamber. This signals if there is water ingress into the sealing chamber through the seal on the pump side.

The connection cable has a length of 10 m as standard and the single-phase version is equipped with a plug. The three-phase version has bare cable ends as standard and is cast as longitudinally watertight for P-version motors.

Seal

There is a sealing chamber between the motor and hydraulics. It is filled with medical white oil and protects the motor from media ingress by the seal on pump side. The pump-side and motor-side seals are provided by two mechanical seals which rotate independently of each other.

Materials

  • Motor housing: 1.4301 (motor version “S”) or EN-GJL-250 (motor version “P”)
  • Hydraulic housing: EN-GJL-250
  • Impeller: EN‐GJL‐250
  • Shaft end: Stainless steel 1.4021
  • Macerator: interior blade = 1.4528; external blade = Abrasite/1.4034
  • Sealing on pump side: SiC/SiC
  • Sealing on motor side: C/MgSiO4
  • Static gaskets: NBR

Scope of delivery

  • Pump
  • 10 m connection cable with plug (single-phase version) or bare cable end (three-phase version)
  • Installation and operating instructions

Accessories

  • Suspension unit or pump base
  • External electrode for monitoring the sealing chamber
  • Chains
  • Switchgears, relays and plugs
  • Fixation sets with anchor bolts

Duty chart

Duty chart Wilo-Rexa CUT GI...

Duty chart Wilo-Rexa CUT GE...

Product

Design

Submersible

Single-channel impeller

Vortex impeller

-

Multi-channel impeller

Open multi-channel impeller

-

Macerator

Turbulator

-

Sealing chamber

Leakage chamber

-

Sealing by mechanical seal on motor side

Sealing by rotary shaft seal on motor side

-

Sealing by mechanical seal on fluid side

AC motor

Three-phase motor

Direct activation

Star-delta activation

-

FC operation

º

dry motor

Motor with oil cooling

-

Dry motor with closed-circuit cooling

-

Application

Wet well installation, stationary

Wet well installation, portable

Dry well installation, stationary

-

Dry well installation, portable

-

Equipment/function

Motor leakage monitoring

Sealing chamber monitoring

º

Leakage chamber monitoring

-

Motor temperature monitoring, bimetal

PTC motor temperature monitoring

-

Explosion protection

º

Float switch

-

Capacitor box for 1~230 V

Ready-to-plug

1~

Materials

Pump housing

Cast iron

Impeller

Cast iron

Motor housing

­–

Downloads

Certification Booklet Wilo-Rexa CUT GI

Article Number 6072581
Edition 1605
Version number 04
Page format A4
Number of pages 4

PDF (223 kB)

Download

Certification Booklet Wilo-Rexa CUT GE

Article Number 6072580
Edition 1605
Version number 04
Page format A4
Number of pages 8

PDF (451 kB)

Download

Drainage and Sewage

Page format A4
Number of pages 24

PDF (8 MB)

Download

General overview

Edition 2017
Page format A4
Number of pages 72

PDF (46 MB)

Download

Wilo-Rexa Cut extended

Article Number 6075128
Edition 1411
Version number 01
Page format A4
Number of pages 304

PDF (9 MB)

Download

Wilo-Rexa Cut standard

Article Number 6075127
Edition 1411
Version number 01
Page format A4
Number of pages 28

PDF (2 MB)

Download

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PDF: Wilo-Rexa CUT

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