Table of Contents
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MAN255/04B
CHEMTROL
CHEMTROL
INSTRUCTION MANUAL
®
255 PPM/pH Controller
®
250 ORP/pH Controller
TOLL FREE
PHONE
FAX
EMAIL
A Division of SANTA BARBARA CONTROL SYSTEMS
5375 Overpass Road, Santa Barbara CA 93111
TECHNICAL SUPPORT
800-621-2279
805-683-8833
805-683-1893
support@sbcontrol.com
(v. 4.0 and up)
(v. 4.5 and up)
$ 10.00
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Table of Contents
Related Manuals for Chemtrol 230
Summarization of Contents
Installation
Location
Proper mounting and placement guidelines for the controller cabinet.
Sensor Installation
Instructions for handling, storing, and mounting the ORP and pH sensors.
Main Line Installation
Method for installing sensors directly onto the main recirculation pipe.
Bypass Line Installation
Recommended method using an optional bypass line assembly for sensor installation.
Sensor Cell
Details on using the optional flow cell assembly for sensor mounting.
Water Flow
Ensuring proper water flow past sensors for accurate readings.
Electrical
Voltage
Information on selecting and verifying the correct operating voltage for the unit.
PPM Battery
Details about the 9V battery for the PPM sensor and replacement criteria.
Remote Alarm
Connecting and configuring the remote alarm feature for notifications.
Flow Switch
Requirements and connection details for the flow switch safety feature.
Terminal Block Wiring
Diagram and explanation of wiring connections for various functions.
Setup Menu
Acid/Base Feed
Configuration of the chemical feed type, Acid or Base.
Sanitizer/pH Interlock
Setting up the safety feature to deactivate sanitizer feed when pH is out of range.
Safety Flow Switch
Enabling the flow switch to prevent chemical feed when flow is absent.
Chemical Feeders
Chemical Feed Pumps
Guidelines for installing liquid chlorine or calcium hypochlorite feed pumps.
Erosion Feeder
Installation of a solenoid valve for erosion feeders used with tablets.
Operation
PPM Sensor Conditioning
Procedure for hydrating and preparing the PPM sensor before first use.
Sensor Calibration
Steps for calibrating PPM and pH sensors using a test kit.
Gain Factor
Adjusting amplifier gain for PPM sensor signal based on cyanuric acid levels.
Control Setpoints
How to change the target values for PPM, ORP, and pH control.
Overfeed Safety Timers
Understanding and adjusting safety timers to prevent overfeeding chemicals.
Out-of-Range Alarms
Setting and understanding alarms for readings outside specified limits.
Feed Mode
Selecting OFF, Manual, or Automatic feed modes for sanitizer and pH.
Proportional Feed
Explanation of standard ON/OFF and Proportional control methods.
Controller Reset
Procedure to restore controller settings to factory defaults.
Startup
Default Parameters
Overview of the factory default setpoints and alarm limits.
Automatic Control
Step-by-step guide for initial controller startup and configuration.
Maintenance
General Maintenance
Routine checks and cleaning of the controller and water chemistry testing.
Effect of Cyanuric Acid
How cyanuric acid impacts sanitizer effectiveness and controller response.
PPM Sensor Testing
Procedure to test the PPM sensor using a DC voltmeter.
PPM Battery
Testing and replacing the 9V battery for the PPM sensor.
No PPM Sensor Cleaning
Warning against cleaning the PPM sensor to avoid damage.
ORP and pH Sensor Testing
Methods for testing ORP and pH sensors using vinegar or dilute acid.
ORP and pH Sensor Cleaning
Detailed steps for cleaning ORP and pH sensor tips.
Sensor Replacement
Recommendation for replacing sensors annually for optimal performance.
Sensor Storage
Proper methods for storing ORP and pH sensors to prevent drying.
Winterizing
Preparing sensors and controller for winter storage.
Portable Tester
ORP Sensor Testing
Using the PORTA-PROBE II to test ORP sensor readings in various solutions.
pH Sensor Testing
Using the PORTA-PROBE II to test pH sensor readings in various solutions.
ORP and pH Simulation
Using the PORTA-PROBE II to simulate ORP and pH signals for controller testing.
Troubleshooting
Power and Indicator Issues
Diagnosing problems related to no lights or alarms.
Display and Sensor Issues
Troubleshooting illogical sensor readings and display errors.
Feed System Issues
Resolving problems with no chemical feed or incorrect feed types.
Residual Level Issues
Addressing issues with chlorine/bromine levels being too high or too low.
Calibration and Reading Consistency
Fixing frequent pH calibration needs and inconsistent sensor readings.
Feeder Operation Issues
Diagnosing feeders running continuously or not reaching setpoints.
Control Performance Issues
Troubleshooting setpoint overshooting or failure to reach setpoints.
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