Hayward HCC 2000 HCC 2000 Complete Pack Manual - Page 10

SECTION 6. PREPARING WATER CHEMISTRY Now that your new controller has been physically installed, water chemistry should be tested and adjusted prior to initiating automated control of the pool or spa. Confirm that your pool or spa water conforms to the following ranges before powering on and setting up the HCC 2000. TEST pH MINIMUM 7.2 Free Chlorine (PPM) 1 Bromine (PPM) 2 Cyanuric Acid (PPM) 0 ORP (mV) 650 Total Alkalinity 80 Calcium Hardness 200 IDEAL 7.5 2 3 - MAXIMUM 7.8 3 4 100 120 400 The above table indicates generally accepted guidelines. Always maintain water chemistry according to standards set by your local or State Health Department. Hayward® water quality controllers maintain sanitizer levels (chlorine, bromine, ozone, etc.) based on ORP. Although ORP is a superior index of water quality compared to part per million sanitizer residual levels, factors such as pH, cyanuric acid concentration and total dissolved solids can affect sanitizer residual readings relative to ORP. Hayward® strongly recommends establishing desired pH, sanitizer residual, calcium hardness, total alkalinity, temperature and cyanuric acid levels prior to initiating automated control of the pool or spa. The ORP setpoint will need to be changed periodically as described later in this section if the goal is to provide consistent sanitizer residual levels rather than consistent control of ORP. CONTENTS COPYRIGHT 2010 HAYWARD INDUSTRIES, INC. ALL RIGHTS RESERVED