Hayward HCC 4000 HCC4000 Series Manual - Page 11

To Select pH Feed Mode: The HCC 4000 is programmed at the factory to operate in automatic feed mode as the default setting. Other pH feed mode selections include off (disabled), and manual on for a fixed interval up to 25 minutes after which automatic feed will resume. While in normal operating mode: Press MENU. Press DOWN to find the pH Feed Mode menu item. Press ENTER to select pH Feed Mode. The current pH Feed Mode will be displayed: pH Feed Mode Automatic Feed Press UP or DOWN to find the desired selection. Press ENTER to save your selection. The controller will automatically return to normal operating mode in 10 seconds. The "Off" (disabled) mode is useful when servicing pH feed equipment, or if pH chemical supply has been depleted. The "Manual On" mode allows constant chemical feed for a fixed interval of up to 25 minutes. This feature is useful when adding extra chemicals is desired and during initial balancing of the water. NOTE: Always disconnect chemical feeder power cords prior to performing any electrical service. To Change The ORP Setpoint: The HCC 4000 is programmed at the factory to maintain ORP at 650 mV by default. This is the generally accepted world standard for safe drinking water. In order to maintain a given chlorine or bromine residual in conformance with Health Department standards for a particular body of water, perform the following: Check and balance pH, calcium hardness and total alkalinity. Manually feed chlorine or bromine to desired ppm residual. Note the displayed ORP value. This will be used as the setpoint. While in normal operating mode: Press MENU. Press DOWN to find the ORP Setpoint menu item. Press ENTER to select ORP Setpoint. The current ORP setpoint will be displayed: ORP Setpoint 650 mV Press UP or DOWN to select the setpoint noted above. Press ENTER to save your selection. The controller will automatically return to normal operating mode in 10 seconds. 10 USE ONLY HAYWARD GENUINE REPLACEMENT PARTS