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Jandy JS Series - User Manual

Jandy JS Series
20 pages
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H0282300 RevG
Installation and
Op er a tion Man u al
Jandy
®
Composite
Sand Filters
JS Series
Sidemount Sand Fil ters
WARNING
FOR YOUR SAFETY - This product must be installed and serviced by a contractor who is licensed
and qualifi ed in pool equipment by the jurisdiction in which the product will be installed where such
state or local requirements exists. In the event no such state or local requirement exists, the installer
or maintainer must be a professional with suffi cient experience in pool equipment installation and
maintenance so that all of the instructions in this manual can be followed exactly. Before installing
this product, read and follow all warning notices and instructions that accompany this product. Failure
to follow warning notices and instructions may result in property damage, personal injury, or death.
Improper installation and/or operation can create dangerous high pres sure which can cause product
failure or also cause the filter lid to be blown off, possibly causing death, serious injury or prop er ty
damage. Improper installation and/or operation will void the warranty.
Installation and Operation Data

Table of Contents

Questions and Answers

  • W
    wangraymondJul 30, 2025
    Why is the water not clear in my Jandy Water Filtration System?
    • K
      Kimberly ClarkJul 30, 2025
      The water in your Jandy Water Filtration System might not be clear due to several reasons: * The disinfectant level might be insufficient; in this case, you should check and adjust it. * The pool chemistry might be incorrect; you should test and adjust the water chemistry. * There might be heavy bathing or dirt loads; you can adjust filter time or water chemistry. * The running times might be insufficient; try increasing the pump run time. * The size or amount of sand might be incorrect; check sand freeboard and sand size or consult with a pool service professional. * You might be backwashing too frequently; allow filter pressure to increase 10-12 psi above 'Clean' pressure before backwashing.
  • T
    Tyler MorrowAug 8, 2025
    Why does my Jandy Water Filtration System have high pressure on start-up?
    • B
      butlercherylAug 8, 2025
      High pressure on start-up in your Jandy Water Filtration System can be caused by several factors: * A small eyeball fitting in the Pool/Spa. Replace it with a larger diameter fitting. * A partially closed valve on the return line. Check and fully open all valves on the return line. * A sand bed clogged. Dig out the top 1" to 8" layer of the sand bed and discard. * Incorrect size of sand. Replace with new sand and chemically clean the filter.
  • S
    Sarah WardAug 11, 2025
    Why does my Jandy Water Filtration System have a short filter period between backwash events?
    • S
      Stephanie BlakeAug 12, 2025
      A short filter period between backwash events in your Jandy Water Filtration System could be due to: * The presence of algae clogging the filter, so you should check the disinfectant content. * Incorrect water chemistry; check pH, total alkalinity and TDS. * Pump output exceeds design flow rate of filter, so you should check pump performance. * Ineffective cleaning, so you should clean or replace sand or filter media per instructions.
  • A
    Aaron JonesAug 16, 2025
    What to do if dirt returns to the pool from my Jandy Water Filtration System?
    • R
      Rachael Mendoza DVMAug 16, 2025
      If dirt is returning to your pool from your Jandy Water Filtration System: * It could be due to channeling or void tunnels occurring through the sand bed, indicating insufficient backwash flow. * Check pump performance. * Backwash the filter to resettle the sand bed surface.
  • T
    Tamara LyonsAug 21, 2025
    Why is sand appearing in my pool from the Jandy Water Filtration System?
    • J
      jill25Aug 21, 2025
      Sand appearing in your pool from the Jandy Water Filtration System may be due to: * Broken lateral(s). Replace damaged lateral(s). * Too much filter media in the filter. Carefully follow instructions in Section 3.5, Filling the Filter with Sand. * Air vent tubing is dislodged (breather tube). Reattach tubing to fitting at internal outlet piping. * Air vent screen is missing. Replace air vent screen.
  • D
    Darin FritzAug 25, 2025
    What causes sand loss to waste during backwash in my Jandy Water Filtration System?
    • J
      john95Aug 26, 2025
      Sand loss to waste during backwash in your Jandy Water Filtration System can occur if: * The backwash flow rate is too high. Reduce backwash flow rate to flow indicated in Section 2.4, 'Specifications and Dimensions'. * The sand size or quantity is incorrect. Change to the proper sand size and verify the freeboard distance is correct.
  • M
    Mr. David Mcbride PhDNov 2, 2025
    What to do if there is low water flow and low filter pressure in my Jandy Water Filtration System?
    • M
      Michael OsborneNov 2, 2025
      If you're experiencing low water flow and low filter pressure in your Jandy Water Filtration System, consider the following: * Check and clean the filter system strainer baskets, as they might be dirty. * Inspect all connections between the pool intake and pump for air leaks on the suction side of the pump. * Check all lines for debris or partially closed valves, as there might be restrictions or blockages in either the suction or return lines. * Backwash or clean the sand filter per the instructions, as the filter might be dirty. * Fill the pool so the level is above the pump inlet line, as the pool water level might be too low. * Fill the pump with water at the basket and replace the lid, as the pump might not be primed. * Replace baskets if strainer baskets are not being ...

Summary

Pool Filter Safety Information

Critical Safety Warnings for Jandy Filters

Highlights critical warnings regarding pressure, air, and installation to prevent injury or death.

General Safety Guidelines for Installation and Use

Provides essential instructions for installers and operators on safe operation and maintenance.

Jandy JS Series Sand Filter General Information

Introduction to Jandy JS Series Sand Filters

Overview of the manual's purpose and where to find additional product information.

Jandy Sand Filter Description and Operation

Explains how the sand filter works, water flow, and the role of filter media.

Installation Requirements for Sand Filters

Details site selection, placement, weather protection, and plumbing recommendations.

Jandy JS Series Sand Filter Specifications and Dimensions

Presents technical data including filtration area, flow rates, pressure limits, and physical dimensions.

Jandy JS Series Sand Filter Installation Guide

Selecting the Optimal Filter Location

Guidance on choosing a well-drained area, ensuring solid mounting, and maintaining clearance.

Securing the Sand Filter to the Equipment Pad

Instructions on anchoring the filter to prevent movement, referencing local codes and hardware.

Preparing the Sand Filter for Installation

Steps for checking the filter for damage and removing accessory packages.

Plumbing the Jandy JS Series Sand Filter

Detailed instructions for connecting the filter plumbing, including warnings and recommendations.

Filling the Sand Filter with Media

Guide on adding sand or pea gravel, specifying types, amounts, and proper media level.

Using Zeobrite as Sand Filter Media

Instructions for using Zeobrite as an alternative filter medium, including media levels.

Installing the Sand Filter Lid

Critical steps and warnings for properly sealing and tightening the filter lid to prevent hazards.

Jandy JS Series Filter Start-Up and Operation

Step-by-Step Filter Start-Up Procedure

Detailed instructions for safely starting the filter system after installation or seasonal shutdown.

Cleaning the Jandy JS Series Sand Filter

Filter Backwashing Instructions

Procedure for backwashing the filter to remove trapped dirt and debris.

Optimizing Sand Filter Performance

Guidance on determining when to backwash and the impact of frequent backwashing.

Chemical Cleaning Procedure for Sand Filters

Instructions for using chemical cleaners to remove oils and deposits from the sand bed.

Jandy JS Series Filter Maintenance

General Filter Maintenance and Checks

Routine cleaning, leak checks, and inspection of safety signs and labels.

Pressure Gauge Inspection and Service

Ensuring the pressure gauge is in good working order and checking for leaks.

Winterizing the Jandy JS Series Sand Filter

Removing the Sand Filter Lid

Troubleshooting Jandy JS Series Sand Filters

Jandy JS Series Filter Troubleshooting Guide

Common problems, possible causes, and solutions for filter operation issues.

Jandy JS Series Filter Parts and Exploded Views

Jandy JS60-SM Sand Filter Parts List

List of replacement parts for the Jandy JS60-SM sand filter model.

Jandy JS100-SM Sand Filter Parts List

List of replacement parts for the Jandy JS100-SM sand filter model.

Jandy JS60-SM Sand Filter Exploded View

Diagram showing the assembly of the Jandy JS60-SM sand filter with part callouts.

Jandy JS100-SM Sand Filter Exploded View

Diagram showing the assembly of the Jandy JS100-SM sand filter with part callouts.

Jandy JS Series Sand Filter Head Loss Curves

Design Head Loss Curves for JS Series Filters

Graph illustrating design head loss versus flow rate for JS Series sand filters.

Jandy JS Series Specifications

General IconGeneral
BrandJandy
ModelJS Series
CategoryWater Filtration Systems
LanguageEnglish

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