Vortex pump Rexa UNI series

condensatewaterelectric

Short description
The Wilo-Rexa UNI is suitable as an entry level model for smaller commercial buildings for sewage disposal (according to EN 12050-1). The pump can be used in a wide variety of applications, whether portable or in the pump chamber as a system solution. The new vortex hydraulics with corrosion-resistant composite and a smooth surface provide high reliability and allow universal use with various fluids. Low weight, integrated capacitor in the single-phase AC motor and fixings integrated in the flange provide easy installation. Direct access to the most important components makes maintenance very easy. Double seals and a large sealing chamber increase maintenance intervals. Wilo-Rexa UNI can be controlled via Wilo-Control switchgears and integrated into building management systems.

Advantages

• Excellent reliability due to corrosion-free hydraulics for universal application and various fluids
• Light weight, integrated capacitor in single-phase AC motor and flange with integrated fixation for easy installation
• Vortex hydraulics and smooth surfaces for optimum efficiency and operational reliability
• Quick maintenance facilitated by direct access to the sealing chamber and pump housing
• Long maintenance intervals ensured by double seal and a high-volume sealing chamber

Product features

• Vortex hydraulics made of corrosion-free copolymer
• Motor housing made of stainless steel (available in 2 qualities)
• Single-phase AC motor with integrated condenser
• Combination flange with integrated and captive fixation and flat gasket
• Hydraulics housing with integrated pump support foot
• Direct access to sealing chamber and hydraulics

Equipment / Function

• Thermal motor monitoring with bimetallic sensor
• Single-phase AC motor with self-switching thermal motor monitoring
• Single-phase AC motor with integrated condenser
• Different versions: Version “P”: with plug; Version “A”: with float switch and plug; Version “O”: bare cable ends

Type key (explanation)
Example: Wilo-Rexa UNI-V05B/21T006-540/O
Rexa = Submersible sewage pump
UNI = Series
V = Vortex impeller
05 = Nominal diameter of discharge port (05 = DN 50; 06 = DN 50/65)
B = Version (A = standard; B = V4A version; K = V4A with cooling jacket)
2 = Number of poles
1 = IE-efficiency class (derived from IEC 60034-30)
T = Mains connection version (M = 1~; T = 3~)
006 = Rated power P in kW (e.g. 006 = 0.6 kW) (key shows concept; actual rated power values vary)
5 = Mains connection frequency: 5 = 50 Hz, 6 = 60 Hz
40 = Key for rated voltage
O = Additional electrical equipment: P = with plug; A = with float switch and plug; O = with bare cable end

Construction / Typical configurations
Various submersible pump configurations for stationary and portable wet installation in intermittent operation. Options include surface-cooled and jacket-cooled motors, versions with float switch and plug, or with bare cable ends. Certain versions (designated A with float switch or other versions) must not be used in hazardous areas; other versions (specific O and K/T variants) may be used in Zone 2 hazardous areas. Flange connection is a combination flange with integrated fixation and flat gasket. Hydraulics housing and impeller are made of copolymer.

Scope of delivery

• Pump
• Installation and operating instructions

Accessories

• Connection cable with fixed cable lengths: 1~ motor up to max. 30 m; 3~ motor up to max. 50 m
• Suspension unit for wet installation
• Level control devices
• Fixation accessories and chains
• Switchgear, relays and plugs

Caractéristiques / spécifications techniques

• Mains connection: 1~230 V, 50 Hz or 3~400 V, 50 Hz (depending on version)
• Submerged operating mode: S1
• Non-immersed operating modes: for some versions S2-15 min; S3 10% (varies by version)
• IP rating: IP68
• Insulation class: F
• Fluid temperature range: 3 °C … 40 °C (37 … 104 °F); max 60 °C (140 °F) for 3 min
• Hydraulics housing / impeller material: PP-GF30 (copolymer reinforced with glass fibre)
• Motor housing materials: 1.4301 (AISI 304) for A versions; 1.4401 (AISI 316) for B/K versions (stainless steel)
• Shaft end: 1.4401 (AISI 316)
• Seal on pump side: SiC/SiC; seal on motor side: C/Cr; static seal: NBR (nitrile)
• Sealing: oil-filled sealing chamber with double sealing
• Available nominal discharge diameters: DN 50 (05) and DN 50/65 (06) depending on variant
• Rated power range examples on the series: 0.37 kW, 0.55 kW, 0.75 kW, 1.1 kW, 1.5 kW, 2.5 kW (varies by model within series)
• Connection cable length standard: 10 m typical for listed units; longer fixed cable lengths available as accessory