Amarex ns

Summary

Product identification

The KSB Amarex N S 32-160 is a fully floodable submersible motor pump designed for waste water applications.

• Type Series: Amarex N
• Impeller Type: S (Cutter)
• Nominal Discharge Nozzle Diameter: DN 32 (32 mm)
• Hydraulic System Size: 160
• Nominal Impeller Diameter: 160 mm
• Frequency: 50 Hz
• Motor Poles: 2-pole
• Motor Design:
  • YL: With explosion protection T4 (40 °C)
  • UL: Without explosion protection, fluid temperatures < 40 °C
• Casing Material: G (Grey cast iron)

Operating limits

• Flow rate (Q): ≤ 16 m³/h (≤ 4.4 l/s)
• Head (H): ≤ 29 m
• Fluid temperature (T): ≤ 40 °C
• Motor rating (P₂): 1.5 kW
• Mode of Operation:
  • S1: submerged (25 m maximum submergence)
  • S3: outside the fluid
• Maximum Switching Frequency (DOL starting): 30 starts per hour

Feed water

The pump is designed for handling waste water in intermittent operation.

• Fluids Handled:
  • Domestic waste water
  • Raw waste water
  • Waste water with faeces
  • Grey water
  • Waste water or grey water containing long fibres
• Impeller: S impeller with cutter, suitable for fluids containing coarse substances and/or long fibres.
• Free Passage: 6 mm

Electrical

• Drive: Three-phase asynchronous squirrel-cage motor
• Explosion Protection:
  • Motor version YL: Ex d IIB T4 Gb (for explosion-proof pump sets)
  • Motor version UL: Non-explosionproof
• Starting Method: DOL (Direct On Line)
• Voltage: 400 V
• Cooling: Cooled by surrounding fluid
• Power Cable: Rubber-sheathed cable (H07RN8-F 7G1.5²), available in 10 m and 20 m lengths.
• Cable Entry: Absolutely watertight
• Monitoring Equipment:
  • Winding temperature (UL motor version): Bimetal switch directly connected with the motor's control circuit (automatic reset and start-up).
  • Winding temperature (YL motor version): Bimetal switch directly connected with the motor contactor's control circuit (automatic reset and start-up); separate bimetal switch for temperature limit for explosion protection (without automatic reset), connected via a tripping unit with manual reset.
• Technical Data (for 1.5 kW P₂):
  • Input Power (P₁): 2.05 kW
  • Rated Current (I_N): 3.40 A
  • Starting Current (I_A): 18.2 A
  • Weight: 29 kg (for 10 m cable YL versions), 33 kg (for 20 m cable UL version)

Mechanical / hydraulic

• Design: Close-coupled, not self-priming.
• Shaft Seal:
  • Drive end: Shaft seal ring (NBR)
  • Pump end: Uni-directional mechanical seal with liquid reservoir (SiC/SiC)
• Bearings: Grease-lubricated, sealed for life, maintenance-free.
• Materials (Standard Variants):
  • Casing, Intermediate Casing, Impeller: EN-GJL-250 (Grey cast iron)
  • Cutter: 1.2080.02 (K100)
  • Shaft: 1.4021 (Stainless steel)
  • Screws/Bolts: A2 (Stainless steel)
  • Elastomers: NBR
• Connections: The pump is mounted on a DN 50 flanged duckfoot bend.
  • Discharge Line Connections: Flanged (DN 32/DN 50), Threaded (DN 32/DN 50), or Clamped (DN 32/DN 50).
  • Pipe Compatibility:
    • Steel pipes (DIN 2440 / DIN 2441) with 60.3 mm outside diameter for DN 50.
    • PVC pipes (ISO 3606) with 63 mm outside diameter for DN 50.
    • Threaded connection DN 50 - G2″.
• Dimensions: See the official PDF for exact tabulated values and drawings.
• Installation Types:
  • Stationary Wet Installation: Guide hoop, guide wire, single guide rail, or twin guide rail arrangements.
    • Installation depths: 1.5 m, 1.8 m, 2.1 m (guide hoop); 4.5 m (guide wire, single/twin guide rail).
  • Transportable Wet Installation: Installation depth 4.5 m.
• Coating: Environmentally friendly KSB top coat (two-component epoxy paint), colour RAL 5002, film thickness = 80 µm.

Certifications

• Europe: Suitable for plants to Standard EN 12050-1.
• Europe: Amarex N DN 32 No.: 7381257-01 z.

Accessories

A range of accessories is available for installation, lifting, and electrical control.

• Installation Parts: Duckfoot bends, anchor bolts, guide rails, claws for various stationary and transportable setups.
• Lifting: Chains (1.4404 stainless steel) and polypropylene lifting ropes, with maximum load 160 kg, in lengths from 2 m to 10 m.
• Pump Accessories: Flanges, PVC adapters, elbows, Storz rigid couplings, plastic hoses, hose clips, swing check valves, socket gate valves, hand pumps, and threaded flanges.
• Electrical Accessories:
  • Control Units: LevelControl Basic 2 for single-pump and dual-pump stations, with options for float switch, 4-20 mA sensor, pneumatic, or bubbler control. Available in non-ATEX and ATEX-compliant versions.
  • Alarm Switchgears: AS 0, AS 1, AS 2, AS 4, AS 5 with various features including acoustic signals, volt-free contacts, and self-charging power supply units.
  • Control Unit Accessories: Float switches, leakage sensors, open/closed pressure bell sets, horns, alarm combinations, yellow alarm strobe lights, PC service tool, and rechargeable battery retrofit kits.
  • ATEX Compliance Note: ATEX-compliant control units are not explosion-proof and must be operated outside potentially explosive atmospheres. Intrinsic safety barriers and ATEX level switches are required for ATEX variants.

Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the original OEM PDF. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror