Troubleshooting; Error List - Hach CL10 Manuel De L'utilisateur

Troubleshooting

Diagnostic and test menu
The diagnostic and test menu shows current and historical information
about the chlorine analyzer. Refer to
and test menu, push the MENU key and select Sensor Setup, Diag/Test.
Table 1 DIAG/TEST menu
Option Description
GATEWAY INFO Shows the firmware version, driver version, serial number
and boot version for the controller and the types of
sensors connected to the controller.
CAL DAYS Shows the number of days since the sensor was last
calibrated.
CAL HISTORY Shows a list of the times when the sensor was calibrated.
Push ENTER to scroll through the entries and view a
summary of the calibration data.
RST CAL HISTORY Resets the sensor calibration history. Requires passcode.
SIGNALS Shows the sensor measurement signal value in mV.
SENSOR DAYS Shows the number of days the sensor has been in
operation.
RST SENSORS Resets the sensor days and calibration days to default.
Requires passcode.
CALIBRATION Shows the slope and offset values for chlorine and pH (if
pH sensor is used). Shows the offset value for the
temperature (if pH sensor is used).

Error list

Errors may occur for various reasons. The sensor reading on the
measurement screen flashes. All outputs are held when specified in the
20 English
Table 1. To access the diagnostic
controller menu. To show the sensor errors, push the MENU key and
select Sensor Diag, Error List. A list of possible errors is shown below.
Table 2 Error list for the sensor
Error Description
CL CAL A chlorine calibration and/or pH
REQD calibration is required.
The chlorine and/or pH
measurement has changed
enough to cause a Cal Watch
alarm to occur. Refer to the
chlorine sensor manual for
more information.
CL MAINT Chlorine sensor maintenance is
REQD required.
The slope is less than 30% or
more than 300% of the default.
The default slope is
100 mV/ppm (100%).
CL MAINT Chlorine sensor maintenance is
REQD required.
The offset is too high (more
than ±50 mV).
CONC The chlorine signal is > 0 mV.
TOO LOW
The potential delivered by the
sensor is outside of the range
0 to -2500 mV.
CONC The chlorine signal is less than
TOO HIGH -2500 mV or greater than
2500 mV (by absolute value).
Warning list
A warning does not affect the operation of menus, relays and outputs. A
warning icon flashes and a message is shown on the bottom of the
measurement screen. To show the sensor warnings, push the MENU
Resolution
Calibrate the chlorine sensor
and/or pH sensor.
Do sensor maintenance and then
repeat the calibration, or replace
the sensor. Refer to the chlorine
sensor manual for more
information.
Do sensor maintenance and then
repeat the calibration, or replace
the sensor. Refer to the chlorine
sensor manual for more
information.
A connection error occurred or
the chlorine sensor is not
polarized/equilibrated in the
sample sufficiently.