Wilo-Rexa PRO-S
Efficient submersible sewage pump in non-clog design with macerator for reliable pressure drainage in commercial and municipal applications.
Efficient submersible sewage pump in non-clog design with macerator for reliable pressure drainage in commercial and municipal applications.
The Wilo-Rexa PRO-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.
Recommended services
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
Product features
- Radial macerator with double shear effect
- Robust motor housing made of grey cast iron, with ATEX approval for zone 1 as standard
- Non-immersed operation in operating mode S2-30min
- Two mechanical seals
- Optional monitoring of the sealing chamber
- Customer-specific adaptation: cable length, PTC sensors for frequency converter and soft start operation
Design
Fully submersible grinder pump for stationary and portable wet installation in continuous operation.
Liquid
For pumping in commercial areas of:
- Sewage containing faeces
- Wastewater (with small amounts of sand)
Sewage pumping according to 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 port:
|
112 | Hydraulics type |
A | Identifier for material and coating type |
2 | No. of poles |
1 | IE class |
T | Mains connection version:
|
11 | Value/10 = rated power P in kW |
X | Ex rating |
5 | Mains frequency: 5 = 50 Hz/6 = 60 Hz |
40 | Rated voltage code |
O | Additional electrical equipment:
|
Technical data
- Mains connection: 1~230 V, 50 Hz or 3~400 V, 50 Hz
- Submerged operating mode:
- Rexa PRO-S03: S1
- Rexa PRO-S04: S1
- Non-immersed operating mode:
- Rexa PRO-S03 to 4 kW: S2-30 min; S3 25%
- Rexa PRO-S03 from 5 kW: S2-30 min; S3 10%
- Rexa PRO-S04: The motor can be run non-immersed. The motor temperature defines the maximum operating time. The motor is fitted with temperature control at the factory for this purpose
- 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-S03 .../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-S03 .../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.
Rexa PRO-S04 .../T .../O
Two-stage sewage pump with radial macerator with double shear effect. Horizontal discharge port with flange connection. Hydraulics housing and impellers made of grey cast iron; macerator made of hardened cutting steel. Surface-cooled 3~ motor with thermal motor monitoring (temperature controller with two temperatures). Oil-filled sealing chamber with two mechanical seals. Motor housing made of grey cast iron. Connection cable with bare cable ends. Unit with Ex-rating as standard.
Scope of delivery
- Pump
- Installation and operating instructions
Options
- Thermal motor monitoring with PTC sensor
- Motor windings to insulation class “H”
- Static gaskets in FKM (FPM)
- Special voltages
Accessories
- Connection cable with fixed cable lengths up to max. 50 m (164 ft).
- External pencil electrode for monitoring the sealing chamber
- Suspension unit for wet well installation
- Pump support foot for portable installation
- Level control devices
- Fixation sets with anchor bolts
- Fixation accessories and chains
- Switchgear, relays and plugs
Installation and operating instructions
Wilo-Rexa PRO-S03
| Article Number | 6092606 |
| Edition | 2022-03 |
| Number of pages | 40 |
| Language | en |
PDF (5 MB)Wilo-Rexa PRO-S04
| Article Number | 6094311 |
| Edition | 2023-11 |
| Number of pages | 40 |
| Language | en |
PDF (5 MB)Brochure
Wilo grinder pumps - Chopping solids for more operational reliability.
| Number of pages | 12 |
| Language | en |
PDF (3 MB)Group Statement
Group Statement REACH
| Edition | 2021-05 |
| Number of pages | 5 |
| Language | language neutral |
PDF (327 KB)Flyer
Reliable pressure drainage in sprawl areas
| Number of pages | 2 |
| Language | en |
PDF (3 MB)