Pentair Fns Plus Users Manual PE34792_sppp

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The  lter that delivers crystal clarity

FNS® Plus

Fiberglass D.E. Filter

By Pentair Pool Products®

Filtering with diatomaceous earth (D.E.) gives you water

that really sparkles. That’s because D.E. filters remove the

tiniest of contaminants…particles as small as 5 microns.

(An average grain of sand is 1000 microns!) Even though

these particles can’t be seen individually, collectively they

greatly affect water clarity.

Here’s why diatomaceous earth filters work so well. Water

passes through a series of D.E. coated grids. Under a

microscope, D.E. looks like a collection of tiny sponges. And

just like a sponge, water can pass through, but microscopic

impurities like dirt, algae, and some forms of bacteria can’t.

FNS® Plus D.E. Filters have been designed with curved grids

to maximize filtration area. More filter area means better

performance and longer periods between cleanings. Our

exclusive internal design has been refined to minimize  ow

restrictions, and therefore requires minimal pumping power

to achieve a needed  ow rate. That means lower utility costs.

In addition to providing the clearest possible water, FNS Plus

was also designed for easy maintenance and long-term

reliability. So you can count on it to keep your pool’s water

clean and crystal clear for years to come.

●

Curved vertical grids provide maximum filter surface area

for greater dirt-trapping capacity and longer periods

between cleanings.

●

Unique internal design ensures optimum filtration and

backwashing efficiency.

●

Chemical resistant, fiberglass reinforced polypropylene tank

for exceptional strength and long life.

●

Easily removable filter grid pack to simplify maintenance

and save you time.

www.pentairpool.com

Phone: 800-831-7133

Fax: 800-284-4151

The FNS® Plus filter’s time-tested design offers you maximum

performance, convenience, and reliability for year after year of

sparkling clear pool enjoyment. No wonder more than 2 million

Pentair filters have been installed by pool professionals.

● Attractive almond-colored tank blends into any

backyard environment.

● High FlowTM manual air relief valve and continuous internal air

relief work together to maintain efficient filtration and prevent

over-pressurization.

● Easily accessible 2" drain for efficient cleanout.

● One-year limited warranty. See warranty for details.

The culmination of 40 years of

pool  lter experience

FNS® Plus Fiberglass D.E. Filter

©2005 Pentair Water Pool and Spa, Inc. All rights reserved.

9/05 Part # P1-091

Corrosion-resistant fiberglass tank

for long life

2" plumbing connections for

maximum  ow

Conveniently located 1½" drain

for easy and efficient cleanout and

100% draining

Tension ControlTM clamp for

secure closure

Available from:

pumps / filters / heaters / heat pumps / automation / lighting / cleaners / sanitizers / maintenance products

Model Filter Vertical Filter Flow Rate GPM Turnover Capacity (Gallons)

Number Area Sq. Ft. Clearance* Diameter Res.** Com.*** 8 hours 10 hours 12 hours

FNSP 24 24 48" 21.5" 60 48 23,040 28,800 34,560

FNSP 36† 36 62" 21.5" 90 72 34,560 43,200 51,840

FNSP 48† 48 74" 21.5" 120 96 46,080 57,600 69,120

FNSP 60† 60 86" 21.5" 150 120 57,600 72,000 86,400

How a D.E. Filter Works

When diatomaceous earth (D.E.) is introduced into the filter system, it coats

the filter cloth. As water passes over the filter grids, the D.E. particles capture

even the smallest suspended dirt particles. When cleaning is needed, the

water  ow is simply reversed.

† NSF Listed.

* Required clearance to remove  lter elements.

** Maximum flow rate.

*** Flow rate is based on 2.0 GPM per sq. ft. of

filter area. Actual system  ow will depend on plumbing size and

other system components.