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SWIMCLEAR CARTRIDGE FILTER ISC2027 REV D
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
WWW.HAYWARD.COM
READ AND FOLLOW ALL INSTRUCTIONS.
Algae are a form of plant life, which can vary in size from a few thousandths of an inch to the size of a small tree. Of the
many forms of algae, those most frequently found in swimming pool water are microscopic in size and green in color.
Algae readily grows in sunlight and can, under favorable conditions quickly overgrow a swimming pool turning it
completely green in just a few hours. Maintaining a chlorine level of at least 1.0 ppm in the pool water at all times is the
most effective way to prevent algae growth in swimming pools. The chlorine level should be checked at least once a
day using a suitable test kit.
If an algae condition develops and the pool water “blooms” green, super-chlorination of the pool will be necessary to
clear it. Add un-stabilized granular chlorine, or liquid chlorine. Follow chemical manufacturer’s recommendation for
super-chlorination. The algae will quickly become inactive and can then be removed by the filter. Live algae, on the
other hand, multiply so fast that the filter cannot keep up with its growth rate.
When correctly used, commercial algaecides are effective against algae, though algaecides should be used in
conjunction with, and not as a substitute for, regular chlorination or super-chlorination.
PLEASE REALIZE . . .
Pure, clear swimming pool water is a combination of two factors—adequate filtration and proper water chemistry
balance. One without the other will not give the clean, clear water you desire.
Your filter system is designed for continuous operation. However, this is not necessary for most swimming pools. You
can determine your filter operation schedule based on your pool size and usage. Be sure to operate your filtration
system long enough each day to obtain at least one complete turnover of your pool water.
To properly sanitize your pool, maintain a free chlorine level of 1 to 3 ppm and a pH range of 7.2 to 7.6. Insufficient
chlorine or an out of balance pH level will permit algae and bacteria to grow in your pool and make it difficult for your
filter to properly clean the pool water.
SERVICE AND REPAIRS
Consult your local authorized Hayward dealer or service center. No returns may be made directly to the factory without
the expressed written authorization of Hayward Pool Products, Inc.
POOL CHEMISTRY GUILDLINES
ACTION REQUIRED TO CORRECT POOL CHEMISTRY
SUGGESTED POOL CHEMISTRY LEVELS
TO RAISE
TO LOWER
pH
7.2 to 7.6
Add Soda Ash
Add Muriatic Acid or Sodium Bisulphate
TOTAL ALKALINITY
100 to 130 ppm Add Sodium Bicarbonate Add Muriatic Acid
CHLORINE (UNSTABILIZED) 0.3 to 1.0 ppm Add Chlorine Chemical
No action - chlorine will naturally dissipate
CHLORINE (STABILIZED)
1.0 to 3.0 ppm Add Chlorine Chemical
No action - chlorine will naturally dissipate
CHLORINE STABILIZER
40 to 70 ppm
(Cyanuric Acid)
Add Stabilizer
Dilution - partially drain & refill pool with water
that has not been treated with Cyanuric Acid.
PROBLEM SOLVING LIST
LOW WATER FLOW
SHORT FILTER CYCLES
POOL WATER WON’T CLEAR UP
REMEDY
1. Check skimmer and pump
strainer baskets for debris.
2. Check for restrictions in
intake and discharge lines.
3. Check for air leak in intake
line (indicated by bubbles
returning to pool).
4. Backwash (Clean) Filter
1. Check for algae in pool and
super-chlorinate as required.
2. Be sure chlorine and pH
levels are in proper range
(adjust as required).
1. Check chlorine, pH and total
alkalinity levels and adjust as
required.
2. Be sure flow rate through filter
is sufficient.
3. Operate filter for longer
periods.
