Hayward W3H400FDP HCC-2000-Automated-Controller-Owners-Manual-092460RevG - Page 19

properly. After saturation in pool or spa water, the sensors may need to be cleaned on a weekly or monthly basis depending on bather load and other facility-specific characteristics. Slow response, increased need to calibrate pH, and inconsistent readings are indications that the sensors are in need of cleaning. To clean the sensors, disconnect from the controller and carefully remove them from the flow cell. Clean the reference junction (the white teflon ring at the bottom of sensor body) with a soft tooth brush and regular tooth paste. A household liquid dishwashing detergent may also be used to remove any oil. Rinse with fresh water, replace teflon thread-seal tape, and reinstall sensors. Hand tighten only. Never allow a pH or ORP sensor to dry completely. Drying will damage the reference junction and void the sensor warranty. Sensor Replacement HCC pH and ORP sensors are engineered to provide the highest performance and longest possible functional service life. If properly cleaned sensors provide unstable readings or require excessive calibration, the pair of sensors should be replaced. For optimum controller performance, replace with genuine HCC Professional Series sensors PRO15-2 and PRO25-2. Sensor Storage Exposure to atmospheric conditions will cause the sensor tips to dry out. Always remove and properly store sensors in the soaking caps provided if sensors are to be removed or stored for one hour or longer. Although Hayward® sensors are freeze-resistant, they must be protected from freezing temperatures when not in use. Store sensors in the soaking caps provided, making sure that each container is filled with the original storage solution or clean water. If the storage containers have been misplaced, store sensors individually in small glass or plastic containers with clean water covering sensor tips. Controller Storage The controller unit is subject to damage by electrostatic discharge (ESD) when the sensor cables are disconnected. Always reinstall the BNC protective covers prior to storing or transporting the HCC 2000 controller unit. Winterization The sensors should be prepared for storage as outlined above and protected from freezing temperatures. Although the HCC 2000 controller is designed to withstand a broad temperature range, winter storage in a secure location is desirable. The flow cell and poly tubing must be drained prior to exposure to freezing temperatures. Either purge all water using compressed air or thoroughly drain through the valve ports and tubing connections. 18 USE ONLY HAYWARD GENUINE REPLACEMENT PARTS