Hach AMTAX sc User Manual page 59

7.2.2 Error messages (continued)
Error displayed Instrument reaction
Service state, cuvette
CUV TOO HOT
heating off!
ELECTRODE SLOPE Service state
FALSE ELEC DATA Service state
Continued
MODULES CONTAM.
measurement
DRAIN BLOCKED Service state
Continued
SAMPLE1 / SAMPLE2
measurement
Cause Solution
Check if incoming
sample is in the
specified range and
increase the cuvette
temperature setpoint
The cuvette/sample is
(CONFIGURE>
over-heated.
CUVETTE TEMP.)
Use lowest possible
cuvette temperature.
Call service if error
continue
Change membrane
and electrolyte, if there
is still a problem, check
The error occurs if the
standards,
electrode slope is not
measurement range
in the range of -50mV
and chemistry, check
to -70mV
flow rate. If all OK, but
error still present, fit
new electrode
Check cleaning
The mV value for Zero
solution (level and
related to Standard 1 is
delivery) and sample
not within the allowed
delivery, check
range.
Standard 1 (level and if
Allowed range for
correct for
(Uzero-UStandard1)
measurement range),
depending on
change membrane and
measurement range:
elektrolyte. Error may
Low (0.05 to 20 mg): occure when sample
5mV to 200mV has very unusual
properties. In this case
Medium (1 to 100 mg):
the error can be
20mV to 265mV
switched to "OFF" in
High (10 to 1000 mg):
the configuration
50mV to 315mV
menue.
Filter modules heavily Clean filter modules
soiled immediately
Check drain line. Adapt
Drain is blocked
cleaning interval to
(lime?)
water hardness.
Check sample delivery,
the amount of sample make sure that sample
is not sufficient line has no negative
(channel1 / channel2) pressure, check
This occurs as error if tightness of piston
SAMPLE DETECTION pump, check overflow
is set to ERROR and air valve, check
tightness of system.
Troubleshooting
Reset error
Reset error manually
Reset error manually
Manual or
automatically when the
CHANGE MEMBRANE
or REPLACE
ELCTRODE pocess is
started
Reset error manually
Reset error manually
Automatic reset when
enough sample is
available or manuell
reset
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