Domestic water supply / swimming pools
Recirculating pump for swimming pool filtering
systems
Filtra N
Main applications
▪
Swimming pools
Fluids handled
▪
Clear water
▪
0.4 to 1.4 mg/l free chlorine and max. 0.6 mg/l combined
chlorine; pH value 6.9 to 7.7; water hardness TH 10° to 30°
Salt content up to 7 g/l
Not suitable for seawater (35 g/l)
Operating data
Operating properties
Characteristic
Value
Flow rate
Q
≤ 36 m
3
/h (10 l/s)
Head
H
≤ 21 m
Fluid temperature
t
≤ 35 °C
Operating pressure
p
d
≤ 2,5 bar
Designation
Example: Filtra N 6 E
Key to the designation
Code
Description
Filtra N
Type series
6
Size; rated flow [m
3
/h]
6, 8, 12, 14, 18, 22, 24, 30
E
Drive
D
Three-phase motor
E
Single-phase AC motor
Design details
Design
▪
Single-stage, self-priming centrifugal pump
▪
Horizontal installation
▪
Integrated pre-filter consisting of a filter basket with in-
termediate pipe; the filter can be hinged open in the mid-
dle to facilitate cleaning.
Drive
▪
230 V single-phase a.c. motor, protected by a temperature
switch with automatic reset.
▪
Three-phase motor 230/400 V
▪
Surface-cooled
▪
Enclosure IP 44
▪
Thermal class F
Shaft seal
▪
Mechanical seal
Bearings
▪
Motor runs in grease-lubricated rolling element bearings
Materials
Overview of available materials
Component
Material
Pump casing
Polypropylene, 30 % glass fibre rein-
forced with stainless steel ring
Diffuser
Polypropylene, glass fibre reinforced
(30 %)
Impeller
Noryl GFN2
Cover
PMMA
Shaft
Chrome steel 1.4028
Motor housing
Aluminium
Discharge cover
Polypropylene, glass fibre reinforced
(30 %)
Product benefits
▪
Corrosion-proof thanks to pump casing made of impact-
resistant plastic material
▪
Maintenance-free and reliable due to mechanical seal
▪
Energy-efficient and low-noise operation of single-phase
AC motor with integrated overload protection or three-
phase motor
▪
Low-clogging, hinged filter basket of patented design
Domestic water supply / swimming pools
Recirculating pump for swimming pool filtering systems
4
Filtra N
