Hach CLF10sc, User Manual

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Option Description
Select Parameter—Chlorine (Total or
Free), pH (optional), Temperature
(optional) Selects the parameter to be configured. Configuring
the selected parameter requires additional steps.
Refer to the sensor user manual for more
information.
Reset Defaults—Confirm to do the
reset. Resets all settings to the factory default values.
5.3 System start up
Make sure all mechanical, electrical and plumbing tasks have been correctly done before starting
flow through the system.
1. Apply power to the controller.
When powered on for the first time, the controller displays the Language, Date Format and
Date/Time screens in order.
2. Set the language, date and time in the controller if this has not been done. Refer to the controller
user manual for more information on how to set these options.
The controller scans for connected devices.
3. Make sure the cleaning port and the grab sample port are closed, then open the ON/OFF valve
on the sample line to start the flow of water through the system.
The chlorine and pH flow cells will fill with water.
4. Make sure the flow sensor LED is on and the float is between the MIN and MAX marks. If the
LED is not on, adjust the flow control valve to increase or decrease the flow.
The flow sensor LED will be on when the flow is sufficient for good sensor operation. If the flow is
too high, the LED may not be lit. Make sure the float is between the MIN and MAX marks.
5. Check for leaks or blockages in the tubing and the flow cells. Shut off the flow to the panel if any
problems are discovered and make the necessary repairs.
6. When the system has sufficient flow, clear any warnings that appear on the controller display by
following the on-screen messages and prompts.
7. Push the HOME key.
The main measurement screen appears and shows the chlorine, temperature and pH (if a pH
sensor is connected) measurement values.
Section 6 Maintenance
C A U T I O N
Multiple hazards. Only qualified personnel must conduct the tasks described in this
section of the document.
6.1 Tubing replacement
Replace the tubing at least once a year. Replace brittle, cracked or leaky tubing immediately.
Replace old, discolored, fouled or damaged tubing with tubing of the same diameter and type (PFA
or PVDF tubing is preferred).
6.2 Clean a sensor flow cell
Clean a flow cell as necessary to remove deposits. Clean a flow cell if it becomes heavily
contaminated. Replace a flow cell if it becomes damaged, discolored or not transparent. It is not
necessary to remove a flow cell from the panel in order to clean it.
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