Hach DR1300 FL, User Manual, Page: 22 / 176

Section 11 Troubleshooting
If an error occurs, a warning message will show on the display with
instructions.
If the instrument does not respond, remove the batteries and then
install the batteries. Replace the batteries if the battery power level is
low.
To do a diagnostic test, select
SYSTEM > Diagnosis with the sample
port cover closed. Supply the diagnostic data to technical support for
analysis.
Problem Possible cause Solution
The instrument
will not come
on. The batteries are not
installed in the correct
orientation.
The battery power level
is low. Make sure the battery orientation is
correct.
Replace the batteries if the battery
power level is low. Use only non-
rechargeable batteries.
The chlorine
readings are
low. The sample containers,
sample vials, caps and
other items that
touched the sample
have a chlorine
demand. Collect samples in clean glass
bottles. Do not use plastic
containers. Plastic containers can
have a large chlorine demand.
Pretreat items that the sample may
touch to remove chlorine demand.
Refer to the instructions in the
Sample Collection section of the test
procedure.
The chlorine
readings are
low. The sample was not
analyzed immediately. Analyze the samples immediately.
Chlorine is a strong oxidizing agent
and is unstable in natural waters.
The total
chlorine
readings are
high or low. The reagents were
added in an incorrect
sequence. Make sure that the reagents are
added to the sample vial in the
sequence given in the test
procedure.
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