Centrifugal Pump LOWARA CA

Centrifugal Pump LOWARA CA Twin impeller centrifugal electric pumps made of stainless steel.

Application

Version made of AISI 304

• Handing of chemically and mechanically non-aggressive water and liquids.
• Water supply.
• Irrigation.
• Water circulation ( cold, hot, refrigerated).

Version made of AISI 316 (“..N”)

• Reverse osmosis (where demineralized water is used).
• Industrial washing.
• Thermal waters.
• Chlorine dispensing in swimming pools.

Specification Centrifugal Pump LOWARA CA

PUMP

• Delivery up to 12,5 m3/h.
• Head up to 62 m.
• Maximum ambient temperature:
  • 45 °C with single-phase motor
  • 40 °C with three-phase motor
• Temperature of pumped liquid:
  • from -10°C to +85°C for CA standard version (NBR elastomers). from -10°C to +110°C for CA and CA..N (EPDM elastomer for N version, FPM elastomers for V version).
• Maximum operating pressure: 8 bar (PN 8).
• Hydraulic performance compliant with ISO 9906:2012 (Grade 3B). (ex ISO 9906:1999 – Annex A).
• Counter-clockwise rotation facing the pump from the suction part.

MOTOR

• Asynchronous, squirrel cage rotor, close construction, external ventilation.
• Protection class: IP55.
• Class 155 (F) Insulation
• Performance to EN 60034-1 specifications.
• Standard voltage:
  • Single-phase version: 220-240 V, 50 Hz
  • Three-phase version: 220-240/380-415 V, 50 Hz
• Condensate drain plugs in the standard version.

Construction Characteristic

• Close-coupled, twin-impeller centrifugal pump featuring axial suction and radial discharge.
• Compact construction, with pump coupled directly to motor; special motor shaft extension in common with the pump and supported by ball bearings.
• Threaded suction and discharge ports:
  • (Rp EN 10226-1 and ISO 7-1).
• High performance enclosed impeller made of AISI 304 stainless steel (AISI 316 for N version).
• Mechanical seal with Ceramic/Carbon rings, NBR elastomers, (EPDM for N version) other parts are made of AISI 304 stainless steel (AISI 316 for N version). Mounting dimensions according to EN 12756 (ex DIN 24960) and ISO 3069.
• O-rings made of NBR (EPDM for N version).
• Mounting pedestal on motor.

Optional Features

• Different voltages.
• 60 Hz frequency (see 60 Hz catalog).
• Different material for the mechanical seal and O-rings.

CEA Series Motors

• Short-circuit squirrel-cage motor, enclosed construction with external ventilation (TEFC).
• IP55 protection degree.
• Insulation class 155(F)
• Electrical performance according to EN 60034-1.
• Supplied three-phase surface motors with IE2 (power < 0,75 kW) or IE3 (power ≥ 0,75 kW) efficiency level according to EN 60034-30:2009 and EN 60034-30-1:2014.
• Metric cable gland according to EN 50262.
• Single-phase version:
  • 220-240 V 50 Hz
  • Built-in automatic reset overload protection.
  • Maximum ambient temperature :45 °C.
• Three- phase version:
  • 220-240/380-415 V 50 Hz
  • Overload protection to be provided by the user.
  • Maximum ambient temperature: 40 °C.

From 1 July 2023 in accordance with the Regulations (EU) 2019/1781 and (EU) 2021/341, the three-phase 50 Hz, 60 Hz or 50/60 Hz surface motors with power outputs ranging from 0,12 to 0,749 kW must have a minimum level IE2 efficiency; the ones with power outputs ranging from 0,75 to 74,9 kW must have a minimum level of IE3 efficiency. The single-phase surface motors with power outputs ranging from 0,12 kW must have a minimum level IE2 efficiency.

CA Series Pumps

The Commission Regulation (EU) No 547/2012 has implemented two directives with regard to ecodesign requirements for some types of clean water pumps placed on the market and put into service inside EU zone as self-alone units or integrated in other products.

For end-suction close-coupled pumps (ESCC for the Regulation) the efficiency assessment refers to

• Just the pump and not the pump and motor assembly (electric or combustion);
• Pump With
• one impeller:
  • a nominal pressure PN not higher than 16 bar (1600 k Pa);
  • a minimum nominal flow not less than 6 m3 /h;
  • a maximum nominal power at the shaft not higher than 150 kW;
  • a head not greater than 140 meters, with a speed of 2900 min-1
  • a head not greater than 90 meters, with a speed of 1450 min-1
• Use with clean water at a temperature ranging from-10 C to 120°C (the test is performed with cold water at a temperature not higher than 40°C).