Hayward Perflex® Extended-Cycle Owners Manual - Page 8

WINTERIZING In areas where sub-freezing temperatures can be expected, the filter should be drained and removed from its operating location and stored indoors. Prior to removal, cycle the filter as described under CLEANING. SERVICE & REPAIRS Consult your local authorized Hayward-Perflex dealer or service center. No returns may be made directly to the factory without the expressed written authorization of Hayward Pool Products, Inc. ALGAE CONTROL Algae is 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. On the other hand, swimming pool water can be kept unfavorable to algae growth simply by maintaining a chlorine level of at least 0.5 ppm in the water at all times. 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, superchlorination of the pool will be necessary to clear it. Add unstabilized granular chlorine, or liquid chlorine. Follow chemical manufacturer's recommendation for superchlorination. The algae will quickly become inactive and can then be removed by the filter. Live algae, on the other hand, multiplies so fast that the filter cannot keep up with its growth rate. In an active algae situation, it may be necessary to regenerate the Perflex filter as frequently as every 2 to 3 hours. 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 superchlorination. Maintaining a chlorine level of at least 0.5 ppm in the pool water at all times is the most effective way to prevent algae growth in swimming pools. SUGGESTED POOL CHEMISTRY LEVELS pH 7.2 to 7.6 TOTAL ALKALINITY 100 to 130 ppm CHLORINE (UNSTABILIZED) CHLORINE (STABILIZED) 0.3 to 1.0 ppm 1.0 to 3.0 ppm CHLORINE STABILIZER (Cyanuric Acid) 40 to 70 ppm PRODUCT REGISTRATION (Retain for Your Records) DATE OF INSTALLATION PURCHASED FROM MODEL SERIAL NUMBER ▲Retain this Warranty Certificate in a safe and convenient location for your records. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS Page 8 of 12 PERFLEX™ Filtration Series IS50C REV C