System Warnings - Hach Lange CL17 User Manual

7.3 System warnings

Warning What the Alarm Indicates
Power failed. In default condition, this warning
POWER
is disabled.
Reference measurement is less than 2000
Low Signal
A/D counts.
A calibration resulted in a gain correction
factor greater than 1.1 or less than 0.9. The
Marginal calibration standard and the value that the
Gain operator is attempting to input do not match.
Re-test the calibration standard and perform a
new calibration on the CL17.
Marginal A calibration resulted in an offset correction
Zero factor greater than 0.2 and less than 0.5.
Marginal A high offset count was measured with the
Offset LED off. Usually caused by light leaks.
Recall active warnings using the
the warnings use the
CLEAR WARNINGS
Table 11 System warnings
function in the alarm menu. To clear
RECALL WARNINGS
function in the alarm menu.
Alarm Display and
Instrument Indication
POWER
LOWSIG
MARG G
MARG Z
MARG 0
Troubleshooting
Resolution
Inspect wiring and circuit breakers
that deliver power to the CL17.
Clean sample cell
Replace sample cell
Set CAL Defaults.
Verify standard value.
Recalibrate the instrument.
Set CAL Defaults.
Verify zero value.
Recalibrate the instrument.
Verify the colorimeter end caps
are firmly screwed in place.
Check for light leaks.
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