Wilo-Rexa SUPRA

Submersible pump for stationary and portable wet well installation as well as stationary dry well installation in continuous operation.

For pumping in commercial areas of:

• Untreated sewage
• Sewage containing faeces
• Process sewage
• Wastewater (with small amounts of sand and gravel)

• Heavy-duty version made of cast iron
• Sealing chamber for leakage absorption thanks to the mechanical seal on the fluid side
• Leakage chamber for leakage absorption thanks to the mechanical seal on the motor side (motor-dependent)
• Motor-dependent monitoring devices:
  • Winding temperature using bimetallic sensor or PTC sensor
  • Leakage detection for sealing and leakage chamber as well as motor/terminal room

• Mains connection: 3~400 V, 50 Hz
• Submerged operating mode: S1
• Non-immersed operating mode:
  • T motor: S2
  • FK motor: S1
  • FKT motor: S1
• Protection class: IP68
• Insulation class: H
• Fluid temperature: 3 … 40 °C (37 … 104 °F)
• Max. immersion depth: 20 m (66 ft)

• Hydraulic and motor housing: EN-GJL-250 (ASTM A48 Class 35/40B) or EN-GJS-500-7 (ASTM A536 70-50-05)
• Impeller: EN-GJL-250 (ASTM A48 Class 35/40B) or EN-GJS-500-7 (ASTM A536 70-50-05)
• Seals:
  • Static: NBR (nitrile)
  • On the fluid side: SiC/SiC
  • On the motor side: SiC/SiC or C/Cr
• Shaft: Stainless steel AISI 1.4021 (420)

Hydraulics

The outlet on the discharge side is designed as horizontal flange connection. The maximum possible dry matter is 8 %. The following impeller shapes are available:

• Vortex impeller
• Single-channel impeller
• Multi-channel impeller

T motor

Surface-cooled submersible motor without cooling system for wet well installation. The waste heat of the motor is dissipated directly to the surrounding fluid via the housing parts. The motor itself is dry. Permanently lubricated rolling bearings are used as motor bearings. The connection cable is longitudinally watertight and has bare cable ends. Depending on the size and the motor power, the motors can be installed dry in short-time duty.

FK motor

Self-cooling submersible motor with active cooling system for wet well and dry well installation. For cooling, the motor is filled with medicinal white oil. An impeller on the motor shaft allows the coolant to circulate continuously. The cooling flange transfers the waste heat to the pumped fluid. The cooling system itself is not pressurised. Permanently lubricated rolling bearings are used as motor bearings. The connection cable is longitudinally watertight and has bare cable ends.

FKT motor

Self-cooling submersible motor with active cooling system for wet well and dry well installation. The separate cooling system is filled with a water-glycol mixture. An impeller circulates the coolant continuously. The cooling flange transfers the waste heat to the pumped fluid. The motor compartment is dry, and the cooling system itself is pressureless. Permanently lubricated rolling bearings are used as motor bearings. The connection cable is longitudinally watertight and has bare cable ends.

Seal

All the motors have a sealing chamber to protect the motor from fluid entering through the seal on the fluid side. The sealing chamber is accessible from the outside. On request, the sealing chamber can be monitored with a pencil electrode. Fluid-side and motor-side sealing is possible in the following versions depending on the motor type:

• Version H: Mechanical seal for the fluid side, rotary shaft seal for the motor side
• Version G: Two independently-acting mechanical seals
• Version K: Block seal cartridge with two independently acting mechanical seals

Operating fluids

All operating fluids are potentially biodegradable and harmless to the environment:

• White oil
• Water-glycol mixture (water-polluting class 1 according to VwVwS)

Motor efficiency classes (based on IEC 60034-30)

In addition to the standard motors, IE3 motors are also available. The motors are based on the same design as the standard motors. This means that the motors are identical in terms of equipment and function.

• Pump
• Fitted accessories as ordered
• Installation and operating instructions

• Standard voltages and special voltages
• Operation in fluids up to 60 °C (140 °F)
• Motor-dependent monitoring devices:
  • Winding monitoring with PTC sensor
  • Sealing chamber
  • Motor/terminal room
  • Motor bearing temperature
  • Oscillation sensor
• Ceram coating for abrasive and corrosive fluids
• Digital Data Interface for simple integration into the system controls and monitoring of the pump:
  • Easy connectivity via Ethernet interface
  • Easy to integrate into existing control technology by using standard protocols
  • Day-to-day time savings and reduced workload thanks to convenient remote monitoring of the operating state
• Ex-rated according to
  • ATEX
  • FM
  • CSA-Ex
  • IECEx

• Suspension unit for wet well installation
• Pump support foot for portable installation
• Foot elbow for dry well installation
• Level control devices
• External pencil electrode for monitoring the sealing chamber
• Fixation sets with anchor bolts
• Fixation accessories and chains
• Switchgear, relays and plugs

• Mains connection: 3~400 V, 50 Hz
• Submerged operating mode: S1
• Non-immersed operating mode:
  • T motor: S2
  • FK motor: S1
  • FKT motor: S1
• Protection class: IP68
• Insulation class: H
• Fluid temperature: 3 … 40 °C (37 … 104 °F)
• Max. immersion depth: 20 m (66 ft)

• Hydraulic and motor housing: EN-GJL-250 (ASTM A48 Class 35/40B) or EN-GJS-500-7 (ASTM A536 70-50-05)
• Impeller: EN-GJL-250 (ASTM A48 Class 35/40B) or EN-GJS-500-7 (ASTM A536 70-50-05)
• Seals:
  • Static: NBR (nitrile)
  • On the fluid side: SiC/SiC
  • On the motor side: SiC/SiC or C/Cr
• Shaft: Stainless steel AISI 1.4021 (420)

Hydraulics

The outlet on the discharge side is designed as horizontal flange connection. The maximum possible dry matter is 8 %. The following impeller shapes are available:

• Vortex impeller
• Single-channel impeller
• Multi-channel impeller

T motor

Surface-cooled submersible motor without cooling system for wet well installation. The waste heat of the motor is dissipated directly to the surrounding fluid via the housing parts. The motor itself is dry. Permanently lubricated rolling bearings are used as motor bearings. The connection cable is longitudinally watertight and has bare cable ends. Depending on the size and the motor power, the motors can be installed dry in short-time duty.

FK motor

Self-cooling submersible motor with active cooling system for wet well and dry well installation. For cooling, the motor is filled with medicinal white oil. An impeller on the motor shaft allows the coolant to circulate continuously. The cooling flange transfers the waste heat to the pumped fluid. The cooling system itself is not pressurised. Permanently lubricated rolling bearings are used as motor bearings. The connection cable is longitudinally watertight and has bare cable ends.

FKT motor

Self-cooling submersible motor with active cooling system for wet well and dry well installation. The separate cooling system is filled with a water-glycol mixture. An impeller circulates the coolant continuously. The cooling flange transfers the waste heat to the pumped fluid. The motor compartment is dry, and the cooling system itself is pressureless. Permanently lubricated rolling bearings are used as motor bearings. The connection cable is longitudinally watertight and has bare cable ends.

Seal

All the motors have a sealing chamber to protect the motor from fluid entering through the seal on the fluid side. The sealing chamber is accessible from the outside. On request, the sealing chamber can be monitored with a pencil electrode. Fluid-side and motor-side sealing is possible in the following versions depending on the motor type:

• Version H: Mechanical seal for the fluid side, rotary shaft seal for the motor side
• Version G: Two independently-acting mechanical seals
• Version K: Block seal cartridge with two independently acting mechanical seals

Operating fluids

All operating fluids are potentially biodegradable and harmless to the environment:

• White oil
• Water-glycol mixture (water-polluting class 1 according to VwVwS)

Motor efficiency classes (based on IEC 60034-30)

In addition to the standard motors, IE3 motors are also available. The motors are based on the same design as the standard motors. This means that the motors are identical in terms of equipment and function.

• Pump
• Fitted accessories as ordered
• Installation and operating instructions

• Standard voltages and special voltages
• Operation in fluids up to 60 °C (140 °F)
• Motor-dependent monitoring devices:
  • Winding monitoring with PTC sensor
  • Sealing chamber
  • Motor/terminal room
  • Motor bearing temperature
  • Oscillation sensor
• Ceram coating for abrasive and corrosive fluids
• Digital Data Interface for simple integration into the system controls and monitoring of the pump:
  • Easy connectivity via Ethernet interface
  • Easy to integrate into existing control technology by using standard protocols
  • Day-to-day time savings and reduced workload thanks to convenient remote monitoring of the operating state
• Ex-rated according to
  • ATEX
  • FM
  • CSA-Ex
  • IECEx

• Suspension unit for wet well installation
• Pump support foot for portable installation
• Foot elbow for dry well installation
• Level control devices
• External pencil electrode for monitoring the sealing chamber
• Fixation sets with anchor bolts
• Fixation accessories and chains
• Switchgear, relays and plugs