Hach AMTAX sc Manual page 28

Troubleshooting
7.2.3 Warnings
Warning displayed Instrument reaction
Instrument is warming
Warming up up sample tubing after
start (de-frosting)
Fan 100 % , standstill
Cooling down
until cool enough
Analyzer is too cold. Measurement
Measurement, but no
Analyzer is too hot.
more air cleaning
Continued
Cuvette is too cool.
measurement
Continued
Electrode slope
measurement
Filter modules are Continued
contaminated measurement
Maintenance mode Maintenance mode
Continued
Reagent level
measurement
28
Cause Solution
As far as possible, wait
until end of the
warm-up phase
If there is a risk that
(except if certain there
the sample tubes are
is no frost), to cancel
frozen, a warning is
place instrument in
displayed
Maintenance mode
and start the
measurement again
Instrument is cooling
Wait until instrument
down after start using
has cooled down
ventilation, if it was
enough
heated excessively
Interior of instrument is Close instrument door,
cooler than 15 °C if necessary check
(59 °F) heating
Change/clean air filter,
At very high internal
check air ducts for
temperature, the air
blockage, check
cleaning of the filter
enclosure fan, is
modules is disabled so
ambient temperature
as to generate less
allowed? If necessary
heat. internal temp =
increase electrode
target temp of cuvette
temperature
Close instrument door,
check/fit cuvette
The cuvette is not
insulation. Attention: If
being heated
this warning occurs
adequately 2 min after
during the calibration,
sample change:
there is a risk of
temp. = ((target temp.
incorrect
of cuvette) –1 °C
measurements, for this
(34 °F))
reason close door
during calibration!
Change membrane
and electrolyte, if there
The warning occurs if is still a problem, check
the electrode slope is standards and
not in the range of chemistry, check flow
–55mV to –67mV rate. If all OK, but
warning still present, fit
new electrode
Clean filter modules
Filter modules soiled
soon
The instrument is in
the Maintenance mode
–
or is switching to this
state
Check reagent level
and replace if
necessary, then reset
reagent level. The
Amount of reagent has
level is indicated
dropped below
mathematically and
warning level set
can only function
reliably if the counter is
only reset when the
solution is changed
Reset warning
Automatic
Reset, automatically
as soon as cool
Reset, automatically
as soon as warmer
Reset, automatically
as soon as cool
Automatic
Automatic
Automatic
Automatic when the
Maintenance mode is
left
On the menu
MAINTENANCE/
TEST/MAINTENANCE
./ REAGENT LEVEL
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