Amarex

Summary

Product Identification

• Pump Type: Submersible Motor Pump Amarex
• Sizes: DN 50 to DN 150
• Motor Poles:
  • 2 Poles: 014 to 084
  • 4 Poles: 012 to 077
• Design: Vertical single-stage submersible motor pump for wet installation, with vortex impeller (F-max) or open dual-vane impeller (D-max), stationary or transportable version. It is a single-stage, single-entry, close-coupled non-self-priming pump set.
• ATEX-compliant version: Available.
• Impeller Types:
  • Vortex impeller (F-max): Suitable for fluids containing solids and stringy material, as well as fluids with entrapped air or gas.
  • Open two-vane impeller (D-max): Suitable for waste water containing wet wipes and long fibres.

Operating Limits

• Flow rate (Q): ≤ 320 m³/h (≤ 89 l/s)
• Head (H): ≤ 42 m
• Fluid temperature (T): ≤ +40 °C
• Motor rating (P₂): 1.24 - 8.4 kW
• Duty type:
  • S1: submerged (max. 25 m)
  • S1: outside the fluid, minimum water level R3 and power derating to IE3
  • S3: 25%, 10 min, outside the fluid, minimum water level R1, rated power
• Frequency of starts/hour:
  • 30 (P₂ ≤ 7.5 kW)
  • 10 (P₂ > 7.5 kW)
• Installation depths:
  • Stationary, with guide hoop: 1.5 m / 1.8 m / 2.1 m
  • Stationary, with single guide rail arrangement: 6 m
  • Stationary, with twin guide rail arrangement: 6 m (available up to 12 m for DN 80 / DN 100 / DN 150)
  • Stationary, with guide wire arrangement: 4.5 m (available up to 9.5 m and 14.5 m)
  • Transportable: 14.5 m
  • For material variants G1, G2, GH: Stationary, with twin guide rail arrangement: 12 m; Stationary, with guide wire arrangement: 14.5 m.

Feed Water

• Main applications: Waste water transport, waste water management, drainage systems, waste water treatment plants, stormwater transport, recirculation, sludge treatment.
• Fluids handled: Service water, grey water, waste water with faeces, waste water containing long fibres and solid substances, fluids containing gas, activated sludge, digested sludge, raw sludge.
• Material suitability for fluids:
  • EN-GJL-250 grey cast iron (Material variant G): Suitable for neutral fluids which are only slightly aggressive and cause little wear. pH should be ≥ 6.5, sand content ≤ 0.5 g/l.
  • Duplex stainless steel (1.4517) (Material variant G1): Resistant to cavitation, has excellent strength. Offers excellent resistance to pitting corrosion for acidic waste water with high chloride content, seawater, brackish water. Good chemical resistance against waste water containing phosphorous and sulphuric acid (pH 1-12), brines, chemical waste water (pH 1-12), grey water and landfill leachate.
  • Wear-resistant white cast iron (EN-GJN-HB555 [XCR14]) (Material variants G2, GH): Suitable for highly abrasive fluids containing sand, ash or iron ore sinter. Has a Rockwell hardness of at least 54 HRC. pH should be ≥ 6.5.
• Specific fluid recommendations:
  • Waste water with faeces: EN 12050, min. free passage of 40 mm.
  • Raw waste water (untreated): ATV recommends a free passage of 100 mm; min. free passage: 76 mm.
  • Abrasive municipal waste water (GH): Solids content < 5 g/l.
  • Water/sand mixture: up to 5 g/l (G2, GH); up to 0.5 g/l (G).
  • Sludges (Raw, Digested, Activated): Pumpable up to a dry substance content of 13% (D-max), 8% (F-max).
  • Fluids containing air and gas: Up to 8% (contact KSB for higher concentrations).
  • Industrial waste water containing aliphatic hydrocarbons, aromatic hydrocarbons, benzene, chlorinated hydrocarbons, chloroform, methane, methylene chloride, oil, petrol, styrene, tetrachloroethylene: FKM elastomer seals and TEHSITE cable recommended.
  • Industrial waste water containing 10% of potassium hydroxide (KOH), 5% of sodium hydroxide (NaOH), ethylene chloride: FEP-FKM elastomer seals recommended.
  • Slightly acidic water (pH ≥ 6): G1 variant and FPM (Viton) O-rings.

Electrical

• Drive: Three-phase asynchronous squirrel-cage motor in accordance with thermal class H.
• Type of protection: Ex db IIB (applies to explosion-proof pump sets only).
• Enclosure: IP68 to EN 60529/IEC529.
• Voltage:
  • Material variant G: 400 V
  • Material variants G1, G2, GH: 230 V / 380 V / 415 V / 500 V / 690 V
• Starting method:
  • Material variant G: DOL; DOL / star-delta
  • Material variants G1, G2, GH: DOL; DOL / star-delta (690 V DOL starting only)
• Power cable:
  • Material variant G: Rubber-sheathed cable (H07RN8-F)
  • Material variants G1, G2, GH: Rubber-sheathed cable (S1BN8-F), Rubber-sheathed cable (S07RC4N8-F) (shielded), TEFZEL cable
• Cable length:
  • Material variant G: 10 m
  • Material variants G1, G2, GH: ≤ 50 m (10 m / 15 m / 20 m / 30 m / 40 m / 50 m available)
• Cable entry:
  • Motor version U (without explosion protection): Cable gland
  • Motor version Y (explosion-proof): Resin-sealed cable entry
  • Material variants G1, G2, GH: Water-tight
• Monitoring equipment:
  • Winding temperature (Motor version U): Bimetal switch directly connected with the control circuit of the motor contactor (with automatic reset and start-up).
  • Winding temperature (Motor version Y): Bimetal switch connected via a tripping unit with manual reset (temperature limit for explosion protection without automatic reset).
  • Leakage inside the motor: Leakage sensor in the motor (optional for G1, G2, GH).
• Explosion protection:
  • Motor version U: Not explosion-proof
  • Motor version Y: II 2G Ex db h IIB T4 Gb
• Technical data: Exact tabulated values for motor rating (P₂, P₁), nominal current (Iₙ), starting current (Iₐ), and weight for various models (Amarex G/G2 with open two-vane impeller at 2900 rpm and 1450 rpm; Amarex G with vortex impeller at 2900 rpm and 1450 rpm) are available in the official PDF. See the official PDF for exact tabulated values.

Mechanical / Hydraulic

• Shaft seal: Two bi-directional mechanical seals in tandem arrangement, with liquid reservoir. The liquid reservoir uses an environmentally friendly, non-toxic, food-approved oil fill for lubrication.
  • Standard: Carbon/Al₂O₃ (drive end), SiC/SiC/NBR (pump end).
  • Option: SiC/SiC/FPM, SiC/SiC/KAL (pump end).
  • For G1, G2, GH: Mechanical seal with covered springs.
• Elastomer seals:
  • Standard: Nitrile butadiene rubber (NBR70)
  • Option: Fluoroelastomer (FKM80), Viton, Teflon-coated (FEP/FKM)
  • For G1, G2, GH: FKM, FKM / Teflon
• Bearings: Grease-packed bearings sealed for life, maintenance-free.
  • Motor-end bearings: Grease-packed bearings sealed for life, maintenance-free.
  • Pump-end bearings: Grease-packed bearings sealed for life, maintenance-free. Reinforced bearings are standard for D-max impeller type and optional for F-max impeller type.
  • Bearing design (Material variant G): D-max: Double-row angular contact ball bearing; F-max: Deep groove ball bearing.
  • Bearing design (Material variants G1, G2, GH): F-max: Double-row angular contact ball bearing (optional).
• Materials of construction:
  • Casing: EN-GJL-250
  • Cover (motor): EN-GJL-250
  • Suction cover: EN-GJL-250 (Standard), EN-GJS-600-3 (with D-flector), EN-GJN-HB555 (with D-flector for GH)
  • Discharge cover: EN-GJL-250 (G, G1, G2), EN-GJN-HB555 (GH)
  • Shaft: 1.4021
  • Impeller:
    • F-max: EN-GJL-250 (G), 1.4517 (G1), EN-GJN-HB555 (G2, GH)
    • D-max: EN-GJS-600-3 (G), EN-GJN-HB555 (G2, GH)
  • Hexagon socket head cap screw: A4
  • Installation parts: Materials include 1.4301 (Pump foot, Foot plate, Bracket), 1.4571 (Guide wire suspension bracket), 1.4401 (Wire), EN-GJL-250 (Flanged bend, Claw), 1.4404 (Lifting chain), polypropylene (Lifting rope).
• Coating: Environmentally friendly KSB top coat (two-component epoxy paint), colour RAL 5002, film thickness = 80 µm.
• Product benefits: High efficiency (up to 69%), non-clogging with patented deflection technology and D-max impeller, long service life (100,000 operating hours), environmentally friendly oil fill for mechanical seal, flexible installation with a large range of adapter claws.

---

Disclaimer: This summary is based solely on the provided text extract. It may not include all figures, footnotes, or the latest revisions present in the complete OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror