wtw OxiTop Control OC 110, Руководство по эксплуатации

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OxiTop
®
Control OC 110 What to do if...
ba31116e05 07/2014
93
12.3 General information
Cause Remedy
No or missing sample
entries in the sample
management

The BOD Routine operating mode
is switched on. Samples were
started in the other operating
modes.

Switch the instrument to the
BOD Standard , BOD Special or
Pressure p operating modesection
9.4.1 O
PERATING MODE
, page 60
At the beginning of the
measurement, no mea-
surement curves are dis-
played
Measurement curves do
not emerge from the ori-
gin

The sample filled and started was
too cold.

The AutoTemp function is switched
off.

Temper the sample more precisely.

Switch on the AutoTemp function
(only effective with run durations of
more than 1 day).
No measurement curves
are displayed although
the measurement has
already been running for
an extended period of
time

No data were retrieved from the
measuring heads.

The AutoTemp phase is still run-
ning (see section 9.4.7 A
UTO
T
EMP
,
page 63).

Call up the data of the measuring
heads.
See section 5.3 C
ALLING UP ALL
DATA
, page 26.

Wait for the end of the AutoTemp
phase then start the evaluation.
Search for free measur-
ing heads for a new mea-
surement Perform the - Show free

function (see section 9 GLP/TOOLS, page
57).
The controller causes the free measuring positions to flash for 5 seconds.
Measuring head uninten-
tionally started for mea-
surement
Measuring head started
with incorrect settings
Measuring head is
required for another sam-
ple
The measuring head can be released again with the command Reset/release:
see section 9.6.2 R
ESET
/
RELEASE
, page 77.
The controller guides you further through the operation.
If only one measuring head is stored under the relevant sample number (in the
BOD Routine and Pressure p operating modes, this is always the case), the
controller automatically erases the sample in the sample management.
Search for a defective
measuring head Perform a measuring head reaction test (see above).
A measuring head that repetitively shows no reaction to the test is defective.
If the defective measuring head cannot be established in this way, perform the
measuring head check (see “Single check”). In doing this, each individual
measuring head must be checked until the defective measuring head has
been found.
A measuring head is
missing or is defective.
Requirement:
To determine the corre-
sponding sample
Call up the function “Call up data” from the sample management for each indi-
vidual unfinished sample. The corresponding sample can be determined by
this.
For subsequent error handling, see section 5.4.4 C
ALLING UP DATA
, page 31.