Pentair FNS Plus FNSP 60 User Manual

Rev. G 6-27-03 1 P/N 190033
FNS
®
Plus Vertical Grid D.E. Filter Owner's Manual
SECTION I. FILTER INSTALLATION.
A. GENERAL INFORMATION.
1. The filter should be mounted on a level concrete slab. Position
the filter so that instructions, warnings and the pressure gauge
are visible to the operator. It also should be positioned so that
the piping connections, control valve and drain port are
convenient and accessible for servicing and winterizing.
2. Install electrical controls (e.g., on/off switches, timers, control
systems, etc.) at least five (5) feet from the filter. This will
allow you enough room to stand clear of the filter during
system start up.
3. Allow sufficient clearance around the filter to permit visual
verification that the clamp is properly installed around the tank
flanges, see Figure 1.
a. Tap the clamp with a mallet or similar tool to ensure uniform
loading during clamp tightening.
IMPORTANT SAFETY INSTRUCTIONS
READ AND FOLLOW ALL INSTRUCTIONS
SAVE THESE INSTRUCTIONS
Table of Contents
SECTION I. FILTER INSTALLATION. .......................................................................................... 1
SECTION II. FILTER OPERATION. ................................................................................................ 2
SECTION III. TROUBLE SHOOTING. ............................................................................................. 8
SECTION IV. TECHNICAL DATA. ............................................................................................. 9-10
WARRANTY ............................................................................................................... 11
Important Notice
Attention Installer.
This manual contains important information about the installation, operation and safe use of this product.
This information should be given to the owner/operator of this equipment.
WARNING
Before installing this product, read and follow all warning notices and instructions accompanying this filter. Failure to follow
safety warnings and instructions can result in severe injury, death, or property damage. Call (800) 831-7133 for additional free
copies of these instructions.
Figure 1.
Pentair Pool Products
1620 Hawkins Ave., Sanford, NC 27330 • (919) 774-4151
10951 West Los Angeles Ave., Moorpark, CA 93021 • (805) 523-2400

Pentair FNS Plus FNSP 60 Specifications

General

Filter Type	DE (Diatomaceous Earth)
Maximum Flow Rate	60 GPM
Filter Area	60 sq. ft.
Number of Filter Grids	8
Model	FNSP 60
Manufacturer	Pentair
Max Working Pressure	50 PSI
Air Relief Valve	Yes
Drain Plug	Yes
DE Capacity	6 lbs
Turnover (8 Hours)	28800 gallons
Turnover (10 Hours)	36000 gallons
Inlet/Outlet Size	2 inch
Waste Line Size	1.5 inch

Summary

Important Safety Instructions

Read and Follow All Instructions

Emphasizes the importance of adhering to all provided instructions for safe operation.

Save These Instructions

Advises users to retain the instructions for future reference and safety compliance.

Section I. Filter Installation

General Information

Provides essential guidelines for filter placement, electrical controls, and clearance requirements.

Section II. Filter Operation

General Information

Covers basic operational principles, maximum working pressure, and the role of the pressure gauge.

Clamp Installation Instructions

Step-by-step guide for correctly installing the filter clamp to prevent hazardous lid blow-off.

System Restart Instructions

Procedures for safely restarting the filter system after servicing or shutdown.

Coating Filter Elements with Diatomaceous Earth

Instructions for applying diatomaceous earth to filter elements for optimal filtration.

Preparing Diatomite

Guidance on preparing the correct amount and consistency of diatomaceous earth for precoating.

Cleaning the Filter Manually

Steps for performing manual cleaning of the filter, including element removal and flushing.

Cleaning Filter with Separation Tank

Procedures for cleaning the filter system using a separation tank for waste management.

Cleaning Filter Elements

Detailed instructions for disassembling and cleaning filter elements.

Cleaning Internal Air Bleed Tube

Instructions for cleaning the internal air bleed tube to ensure proper function.

Cleaning High Flow Manual Air Relief Valve

Guide for cleaning the manual air relief valve to maintain system performance.

Section III. Troubleshooting

Air Entering Filter is Dangerous

Identifies and addresses dangerous air entry conditions into the filter system.

Pressure and Gauge Issues

Covers pressure drops, high pressure after backwash, and pressure gauge maintenance.

Filter Performance Issues

Addresses short filter runs, clouds of dirt, liming-up, and diatomite entering the pool.

Section IV. Technical Data

FNS Plus Tank Assembly Part List

Lists all components of the FNS Plus tank assembly with part numbers and descriptions.

FNS Plus Flow Rates

Provides information on filter pressure loss and flow rate capacities for different filter sizes.