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PC5000 OPERATION

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PC5000 DISPLAY SCREEN

To display submenus, click on blue square dots.

PC5000 Screen
ORP MENU
SANITIZER MENU
pH MENU
CONDUCTIVITY MENU
TDS MENU
SATURATION MENU
HEATER MENU
SETUP MENU

OPERATION

The Main Display Screen of theCHEMTROL® PC5000 Programmable Controller gives direct access to all the menus and submenus. Navigation between the menus and inside the menus is easily accomplished with the four directional arrow keys. Numerical settings can be changed with the ten-key keypad.

CHEMICAL AUTOMATION

By constantly monitoring the pH of the water and the activity of the sanitizer, Chemical Automation makes it possible to maintain clean and safe water at all times with a significant reduction in the cost of chemicals, maintenance and repairs. It is now recognized as a must for all commercial and public pools and spas, as well as for quality residential installations.

ORP is used to monitor the Oxidation-Reduction Potential in the water produced by a true oxidizer, like ozone, or an oxidizing sanitizer, like chlorine or bromine.

The ORP MENU includes selection of the control mode (Off, Manual, Auto or Timer), sensor calibration (1, 2 or 3 points), setpoint level, high and low alarms, shocking and chemical saver programs. It also displays the run time for the current feed event and cumulative run time. Shock treatment can be initiated manually or under programmable weekly or multi-weekly schedules.

The SANITIZER MENU is used to control the chlorine or bromine level in terms of sanitizer concentration (parts per million or milligrams/liter), obtained from the PPM sensor. The sanitizer concentration readings can be calibrated to account for the effect of cyanuric acid stabilization. Superchlorination can be initiated manually or under programmable weekly or multi-weekly schedules.

The pH MENU is used in the same way to select the pH control parameters using either acid or base feed or both. It also includes an Acid Wash program for periodic injection of an acid rinse solution to clean the heads of the sensors.

SATURATION AND WATER BALANCE

Proper control of saturation and water balance is required to maintain water quality and to avoid the development of scaling or corrosive conditions.

The Conductivity sensor monitors the concentration of dissolved solids by measuring the conductivity of the water. The data can be displayed either in conductivity units (microsiemens/cm) or in parts per million of Total Dissolved Solids (TDS), using an operator-selectable conversion factor.

The TDS MENU is used to set automatic dumping (bleeding) of water when the dissolved solid concentrations becomes too high, selecting either a Conductivity or a TDS control setpoint to activate the dump valve. Backfilling of water is done simultaneously with a level control activated valve.

The Langelier Index calculates the saturation condition from the pH and Temperature sensor inputs and from manual data entry for Alkalinity and Calcium Hardness. The water saturation condition is constantly displayed on the Main Screen as either "OK", "Scaling" or "Corrosive" using standard Langelier Index limits. If a scaling or corrosive condition develops, it is immediately indicated with a flashing display on the Main Screen. "What if" analyses can be run at any time by manually entering different values for alkalinity, calcium hardness, pH and temperature.

Up to three different types of chemical additives - such as inhibitor and biocides for cooling towers - can be programmed separately for automatic addition as a function of time, bleed activation, pH control activation or cumulative flow rate.

TEMPERATURE / HEATER CONTROL

Temperature Sensor readings are displayed either in degrees Farenheit or Celsius and used to control the heater.

The TEMPERATURE MENU is used to set the heater control to Manual or Automatic using a programmable seven-day schedule with separate daily ON and OFF times. The energy saver program is used to lower the water temperature during hours when the facility is not in use, thereby rea lizing substantial savings on heating costs.

SETUP MENU

The SETUP MENU is used to modify the configuration parameters for initialisation, operations and communications from their initial defaut values. These values can be changed at any time or restored to the original default values.

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