Rexa PRO-S
Submersible pump
Efficient submersible sewage pump in non-clog design with macerator for reliable pressure drainage in commercial and municipal applications.
- Radial macerator with double shear effect ensures excellent clogging resistance
- Optimised hydraulics/macerator combination for maximum delivery head with highest efficiency
- Use of the smallest possible pipework guarantee low overall installation costs
- Developed for easy selection to meet demanding requirements
- High-quality motor with two mechanical seals and optional monitoring of the sealing chamber ensure long service life
- Designed for professional maintenance, long service life and a high degree of stability
Logos/Certifications
Recommended services
Design
Fully submersible grinder pump for stationary and portable wet installation in continuous operation.Liquid
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
Type key
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
- IP rating: 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 from grey cast iron; macerator made from hardened steel for blades. 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 from grey cast iron; macerator made from hardened steel for blades. 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 steel for blades. 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