Fully submersible grinder pump for stationary and portable wet well installation in continuous operation.
Fluid
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.
Construction
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.
Operating Data
Fluid media: Water 100 %
Fluid temperature: 20.00 °C
Requested flow:
Requested head:
Max. delivery head: 87.50 m
Product data
Hydraulics type: Two-channel impeller with macerator
Maximum operating pressure: 9.625 bar
Max. immersion depth: 20 m
Fluid temperature: 3…40 °C
Motor data
Motor design: Submersible motor – surface-cooled
Mains connection: 3~400V/50 Hz
Voltage tolerance: +-10 %
Power factor: 0.87
Rated power: 10.5 kW
Power consumption: 12.3 kW
Rated current: 20.5 A
Starting current: 57 A
Activation type: Star-Delta (YΔ)
Number of poles: 2
Rated speed: 2,914 1/min
Max. switching frequency: 15 1/h
Insulation class: H
Protection class: IP68
Operating mode (immersed): S1
Operating mode (non-immersed): –
Cable
Connection cable length: 10 m
Cable type: H07RN-F
Cable cross-section: 10G1,5
Mains plug: No
Type of connection cable: Non-detachable
Equipment/function
Float switch: No
Macerator: Yes
Explosion protection type: ATEX
Motor protection: Bimetall
Motor, leakage detection: No
Sealing chamber, leakage detection: Optional
Leakage chamber, leakage detection: No
Materials
Pump housing: 5.1301/EN-GJL-250
Macerator:
Impeller: 5.1301/EN-GJL-250
Shaft: 1.4401
Sealing on pump side: QQPGG
Sealing on motor side: BXPFF
Gasket material: NBR
Motor housing: 5.1301/EN-GJL-250
Installation dimensions
Pipe connection on the suction side: DN 50, PN 16
Pipe connection on the discharge side: DN 50, PN 16
Ordering information
Brand: Wilo
Product description: Rexa PRO-S04-224A/20T105X540/O
Net weight, approx.: 124 kg
Article number: 6097402
