Vortex pump Rexa FIT series

watermanualsubmersible

Short description
Submersible pump for stationary and portable wet installation in intermittent operation.

Main features

• Ready-to-plug and immediately ready to go (A and P version)
• Attached float switch (A-model) enables easy operation
• Safe vortex hydraulics with large, free ball passage pump in non-clog design during operation
• Sealing chamber with optional external monitoring
• Lightweight

Design
Submersible pump with vortex impeller and horizontal discharge port with flange connection. Versions for non-Ex and for use in Zone 2 hazardous areas depending on mains connection and electrical equipment variant.

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
Example: Wilo-Rexa FIT-V06-212A/21T011-540/A
Rexa = Submersible sewage pump
FIT = Series
V = Impeller shape: Vortex impeller
06 = Nominal diameter of discharge port, e.g. DN 65
212 = Hydraulics type
A = Hydraulics material version: Standard version
2 = Number of poles
1 = IE-efficiency class (derived from IEC 60034-30)
T = Mains connection version: M = 1~ (alternating current), T = 3~ (three-phase current)
011 = Value/10 = Rated power P in kW (example encoding)
- = Not Ex-rated (no Ex marking in type string)
5 = Mains frequency key: 5 = 50 Hz / 6 = 60 Hz
40 = Key for rated voltage
A = Additional electrical equipment: P = with plug; A = with plug and float switch; O = with bare cable end

Technical data

• Mains connection: 1~230 V, 50 Hz or 3~400 V, 50 Hz (depending on version)
• Submerged operating mode: S1
• Non-immersed operating mode: S2-15 min; S3 10%
• IP rating: IP68
• Insulation class: F
• Fluid temperature range: 3 … 40 °C (37 … 104 °F)
• Max. short-term fluid temperature: 60 °C (140 °F) for 3 minutes

Materials

• Hydraulics housing: EN-GJL-250 (ASTM A48 Class 35/40B)
• Impeller: EN-GJL-250 (ASTM A48 Class 35/40B)
• Motor housing: 1.4301 (AISI 304)
• Shaft: 1.4021 (AISI 420)
• Seal on motor side: C/MgSiO
• Seal on fluid side: SiC/SiC
• Static seal: NBR (nitrile)

Construction / Versions
Rexa FIT-V ... / M ... / P: Surface-cooled 1~ motor with integrated operating capacitor and self-switching thermal motor monitoring, oil-filled sealing chamber with two mechanical seals, stainless steel motor housing, detachable connection cable with fitted plug (CEE 7/7). May be used in Zone 2 hazardous areas if specified.

Rexa FIT-V ... / M ... / A: As above but with detachable connection cable including float switch and fitted plug (CEE 7/7). Must not be used in hazardous areas.

Rexa FIT-V ... / T ... / A: Surface-cooled 3~ motor with thermal motor monitoring, detachable connection cable with CEE plug (16A, 3P+N+PE, 6h), float switch and thermal motor monitoring connected to the CEE plug. Must not be used in hazardous areas.

Rexa FIT-V ... / T ... / O: 3~ motor with thermal motor monitoring, detachable connection cable with bare cable ends. May be used in Zone 2 hazardous areas if specified.

Scope of delivery

• Pump
• Installation and operating instructions

Accessories

• Connection cable with fixed cable lengths: up to max. 30 m for 1~ motors; up to max. 50 m for 3~ motors
• External pencil electrode for monitoring the sealing chamber
• Suspension unit for wet installation
• Pump support foot for portable installation
• Level control devices
• Fixation sets with bonded anchor
• Fixation accessories and chains
• Switchgear, relays and plugs

Caractéristiques / spécifications techniques

• Series: Rexa FIT
• Impeller type: Vortex impeller (large free ball passage, non-clog design)
• Discharge port nominal diameters available (examples): DN 50, DN 65/80, DN 100
• Rated power examples: 1.1 kW, 1.5 kW, 2.5 kW, 3.5 kW, 3.9 kW (various versions)
• Mains plug options: CEE 7/7 (Schuko), CEE 16A 3P+N+PE 6h
• Float switch: available in A versions
• Sealing chamber: oil-filled with two mechanical seals; option for external monitoring