System Warnings - Hach CL17 Instrument Manual

4.3 System Warnings

Warning What the Alarm Indicates
Power failed. In default condition, this warning is
POWER
disabled.
Reference measurement is less than 2000 A/D
Low Signal
counts.
A calibration resulted in a gain correction factor
greater than 1.1 or less than 0.9. The calibration
Marginal standard and the value that the operator is
Gain 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 factor
Zero greater than 0.2 and less than 0.5.
Marginal A high offset count was measured with the LED
Offset off. Usually caused by light leaks.
54400_trouble.fm
Recall active warnings using the
menu. To clear the warnings use the
menu.
Table 6 System Warnings
function in the alarm
RECALL WARNINGS
CLEAR WARNINGS
Alarm Display and
Instrument Indication
Inspect wiring and circuit
breakers that deliver
POWER
power to the CL17.
Clean sample cell
LOWSIG
Replace sample cell
Set CAL Defaults.
Verify standard value.
MARG G
Recalibrate the
instrument.
Set CAL Defaults.
Verify zero value.
MARG Z
Recalibrate the
instrument.
Verify the colorimeter
end caps are firmly
MARG 0
screwed in place.
Check for light leaks.
Section 4
function in the alarm
Resolution
Page 55
System Warnings