Hach CL17sc Manuel De L'utilisateur page 26

The status indicator light changes to yellow when a warning occurs. If sufficient sample flow is
available, a warning does not affect the operation of menus. A warning does not affect the operation
of the relays and outputs. A warning icon flashes and a message is shown on the bottom of the
controller display.
Warning
BUBBLES There are bubbles in the cell.
DETECTED
CLEAN CELL The cell is getting stained or
SOON dirty and should be cleaned
soon to prevent an error.
HIGH The chlorine concentration is
CHLORINE at or more than the HIGH CL
ALARMS setpoint.
LOW The chlorine concentration is
CHLORINE at or less than the LOW CL
ALARMS setpoint.
LOW SAMPLE The sample flow measured is
FLOW less than the minimum sample
flow rate. Refer to
Specifications
HIGH SAMPLE The sample flow measured is
FLOW more than the maximum
sample flow rate. Refer to
Specifications
26 English
Table 8 Warning messages
Description
on page 3.
on page 3.
Solution
Clean the cell. Refer to
on page 20.
(Optional) Set the BUBBLE REJECT setting to
on. Refer to Step 10: Configure the analyzer
on page 17.
Clean the cell. Refer to
on page 20.
Increase the HIGH CL ALARMS setting. Refer
to Step 10: Configure the analyzer
Or
Decrease the chlorine concentration of the
sample supplied to the analyzer.
Decrease the LOW CL ALARMS setting. Refer
to Step 10: Configure the analyzer
Or
Increase the chlorine concentration of the
sample supplied to the analyzer.
Set the sample flow rate. Refer to
the flow rate on page 16.
Clean the filter in the Y-strainer if necessary to
remove a blockage. Refer to
in the Y-strainer on page 22.
Note: When a LOW SAMPLE FLOW warning occurs, the
analyzer temporarily stops measurements. When the flow rate
is again within the flow rate specification, the analyzer
automatically starts measurements.
Set the sample flow rate. Refer to
the flow rate on page 16.
Clean the cell
Clean the cell
on page 17.
on page 17.
Step 8: Set
Clean the screen
Step 8: Set