Wilo-Rexa PRO

Design

Submersible sewage pump for continuous duty, made of grey cast iron for stationary and portable wet well installation and stationary dry well installation.

Application

For pumping in continuous duty of:

  • Wastewater
  • Sewage containing faeces
  • Sludges up to max. 8 % dry matter (depending on the selected hydraulics)

Type key

Example: Wilo-Rexa PRO V06DA-110/EAD1X2-T0015-540-O
PRO Series name
V Impeller type:
V = Vortex impeller
C = Single-channel impeller
06 Nominal diameter of pressure connection e.g. DN 65
D Hydraulic version
D = suction side drilled in accordance with DIN
N = suction side drilled in accordance with ANSI (North American Standard)
A Material version, hydraulics
110 Hydraulics definition
E Motor version
E = dry motorr
R = power-reduced motor
A Material version, motor
D Seal version
D = with two independent mechanical shaft seals
1 IE efficiency class, e.g. 1 = IE1 (derived from IEC 60034‑30)
X Ex-approval
X = ATEX
F = FM
C = CSA
2 Number of poles
T Mains connection version:
M = 1~
T = 3~
0015 Value/10 = rated motor power P2 in kW
5 Frequency (5 = 50 Hz, 6 = 60 Hz)
40 Code for rated voltage
O Additional electrical equipment
O = with bare cable end
F = float switch with bare cable end
A = float switch with plug
P = with plug

Special features/product advantages

  • Efficiency-optimised single-channel impellers
  • Vortex impeller non-susceptible to clogging
  • Ex-rated in accordance with ATEX as standard
  • Operation with frequency converter
  • IE3 motors available
  • Longitudinally watertight cable inlet

Technical data

  • Mains connection: 1~230 V, 50 Hz or 3~400 V, 50 Hz
  • Immersed operating mode: S1
  • Non-immersed operating mode: S2‑30 min; S3 25%
  • 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
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Equipment/function

  • Leakage detection for the motor compartment
  • Winding temperature monitoring with bimetal sensor
  • Single-phase version with capacitor switchgear

Description/design

Submersible sewage pump as submersible monobloc unit for stationary and portable wet well installation, as well as stationary dry well installation.

Hydraulics

The outlet on the pressure side is designed as horizontal flange connection. The maximum possible dry matter is 8 % (depending on the hydraulics) Vortex and single-channel impellers are used.

Motor

The motor versions used are single-phase current and three-phase current dry motors. For single-phase current motors, the condenser is installed in a separate switchgear. Depending on performance, activation is carried out via direct startup or star/delta startup.

The motor is cooled by the medium around it (pumped fluid or air). The waste heat is dissipated via the motor housing.

The motors can be immersed during continuous duty (S1). In submerged operation, the operating modes S1 (continuous duty), S2 (short-time duty) or S3 (intermittent) are possible depending on the rated motor power.

Furthermore the motors are equipped with the following monitoring devices:

  • Leakage detection motor compartment. The leakage detection signals water ingress into the motor compartment.
  • Thermal motor monitoring
    The thermal motor monitoring protects the motor windings against overheating. Bimetallic strips are used for this as standard.

The motor can also be fitted with an external sealing chamber electrode to monitor the sealing chamber. This signals if there is water ingress into the sealing chamber through the mechanical seal on the fluid side.

The connection cable has bare cable ends and a length of 10 m as standard, and is available in following versions:

Seal

Located between the motor and hydraulics is a sealing chamber with the seal on the fluid and motor side. This sealing chamber is filled with medicinal white oil. The fluid-side and motor-side seals are provided by two mechanical seals which rotate independently of each other.

Materials

  • Motor housing: EN-GJL-250
  • Hydraulic housing: EN-GJL250
  • Impeller: EN-GJL250
  • Static seals: NBR
  • Sealing on pump side: SiC/SiC
  • Sealing on motor side: C/MgSiO4
  • Shaft end: Stainless steel 1.4021

Scope of delivery

  • Submersible sewage pump with 10 m cable
  • Operating and maintenance manual

Accessories

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