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Explains the equilibrium of Free Chlorine in water, detailing HOCI and OCI- forms and their relation to pH.
Describes ORP sensor function and PPM sensor specificity to Free Chlorine, including setpoint defaults.
Emphasizes testing pH, Cyanuric Acid, and TDS before automatic control for optimal performance.
Outlines controller inputs like sensors and outputs like relays for feed control and alarms.
Provides guidelines for mounting the controller cabinet securely, safely, and away from environmental hazards.
Details how to mount sensors directly on the main recirculation line, avoiding turbulence.
Covers proper storage of sensors to prevent drying out and emphasizes careful handling.
Recommends installing the optional Bypass Line Assembly for easier sensor installation and water flow.
Suggests using the Flow Cell Assembly for additional ease of installation and maintenance of sensors.
Stresses the importance of proper water flow past sensors for accurate readings and troubleshooting hydraulics.
Covers voltage checks, PPM sensor battery, and remote alarm connections and settings.
Details flow switch requirements and accessing the setup menu for configuration of feed modes and interlocks.
Provides a diagram for connecting wires to the controller's terminal block for various functions.
Instructs on installing chemical feed pumps and erosion feeders with solenoid valves downstream of sensors.
Outlines hydrating and calibrating the PPM sensor using test kits and describes sensor response time.
Explains adjusting PPM gain based on cyanuric acid and changing setpoints for PPM, ORP, and pH.
Details the function of safety timers to prevent overfeeding chemicals and how to adjust them.
Defines alarm limits and how to select feed modes (OFF, Manual, Automatic) for sanitizer and pH.
Explains proportional feed control methods and how to reset controller parameters to factory defaults.
Lists default settings and provides steps for initial controller startup and sensor stabilization.
Advises on cleaning the controller, water testing, and the impact of cyanuric acid on sanitizer levels.
Covers PPM sensor testing, battery replacement, and specific cleaning instructions (do not clean).
Details ORP/pH sensor testing, cleaning procedures, replacement recommendations, and storage.
Provides guidelines for storing sensors to prevent drying out and preparing the system for winter.
Guides on testing the ORP sensor using the PORTA-PROBE II tester in various solutions.
Details how to test the pH sensor using the PORTA-PROBE II tester and interpret readings.
Explains using the tester as a simulator to verify controller feed and alarm features.
General| Brand | Chemtrol |
|---|---|
| Model | 250 |
| Category | Controller |
| Language | English |
