Centrifugal Pump LOWARA COF Bare shaft centrifugal pumps with open impeller
Applications
- Pumping of moderately viscous water and liquids with moderate chemical aggressiveness.
- Water supply.
- Irrigation.
- Water circulation (cold, hot, refrigerated).
- Washing in the packaging, textile and food industries
- For aggressive liquids, please contact our sales network.
Construction Features
- Close-coupled, single-impeller centrifugal pump featuring axial intake and radial discharge.
- Pump coupled by adapter to the bare shaft support; special shaft extension in common with pump are supported by ball bearing.
- Back pull-out design; no need to disconnect the pump body from the system pipes.
- Threaded suction and delivery ports (Rp ISO 7).
- In the standard version, all parts in contact with pumped liquid are made of AISI 316 stainless steel.
- High performance open impeller made of AISI 316 stainless steel.
- Sturdy support with permanently lubricated bearings.
- Flexible couplings available for connection to motor shaft of various sizes.
Specification
PUMP
- Delivery up to 54 m3/h. (at 2900 rpm)
- Head up to 24 m. (at 2900 rpm)
- Maximum ambient temperature: : 45 °C.
- Temperature of pumped liquid:
- -10°C to +110°C for standard version.
- Maximum working pressure: 8 bar (PN 8).
- Hydraulic performance compliant with ISO 9906:2012 (Grade 3B). (ex ISO 9906:1999 – Annex A)
- Counterclockwise rotation facing the pump from the suction port.
- Standard supplied IE2/IE3 motors are compliant with Regulation (EC) no. 640/2009 and
- IEC 60034-30.
- Suspended solids:
- 11 mm (COF3500, 20 mm (COF500)
- Mechanical seal with Ceramic/Carbon faces (Silicon Carbide and Tungsten Carbide in the “K” version), FPM elastomers, other parts are made of AISI 316 stainless steel.
- FPM O-rings
Optional Features
- Different materials for the mechanical seal and O-rings.
- Electric pump unit (pump, motor, coupling, base).
COF Motors
- Short- circuit squirrel-cage motor, enclosed construction with external ventilation (TEFC).
- IP55 protection degree.
- Insulation class 155(F).
- Electrical performances according to EN 60034-1.
- Supplied three-phase surface motors with IE2 efficiency level (power < 0,75 kW) or IE3 efficiency level (power ≥ 0,75 kW) as standard according to EN 60034-30:2009 and EN 60034-30-1:2014.
- Metric cable gland according to EN 50262.
- Three-phase version:
220-240/380-415 V 50 Hz
Overload protection to be provided by the user.
Maximum ambient temperature: 50 °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.