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Maintenance, troubleshooting and repair
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User qualification, maintenance, troubleshooting: trained user
Chapter 1.2 ‘User qualification’ on page 7
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User qualification, repair: trained and qualified personnel
Chapter 1.2 ‘User qualification’ on page 7
WARNING!
Danger from hazardous substances!
Possible consequence: Fatal or very serious inju‐
ries.
Please ensure when handling hazardous sub‐
stances that you have read the latest safety data
sheets provided by the manufacture of the haz‐
ardous substance. The actions required are
described in the safety data sheet. Check the
safety data sheet regularly and replace, if neces‐
sary, as the hazard potential of a substance can be
re-evaluated at any time based on new findings.
The system operator is responsible for ensuring
that these safety data sheets are available and that
they are kept up to date, as well as for producing
an associated hazard assessment for the worksta‐
tions affected.
8.1 Ultrasonic cleaning
This function is used for the continuous cleaning of the cuvette.
The function is not intended for cleaning cuvettes that are already
dirty, nor can it fully replace manual cleaning.
The system is intended to extend the time between cleaning.
Please note that the system requires the use of a special cuvette,
which is supplied in the scope of delivery of the device. This cuv‐
ette must be used for the system to work correctly.
The system sends an ultrasonic frequency via spring connections
to a piezo transducer. The piezo transducer is attached to the
bottom of the special cuvette.
The system can detect that an incorrect cuvette is installed, a
transducer failure has occurred, or the transducer is not in contact
with the spring connectors. This error is indicated by the display
‘CLN’ on the lower display. As this is an error status, this error
status can affect the 4 ... 20 mA and alarms, depending on the set‐
ting of the sensor (4 ... 20 mA) and if an alarm is set for errors.
If the correct cuvette is installed and the error persists, try rotating
the flow assembly slightly to improve the connection to the ultra‐
sonic transducer. If this measure does not work, you may possibly
need to replace the cuvette. This cuvette is only detected in AUTO
mode.
‘AUTO’ flashes on the display if the system is working cor‐
rectly.
The connection can be improved by the use of a small film of an
anti-oxidative compound, such as OX-GARD™, supplied by GB
Electrical Inc. This product is available in the electrical department
of most builders’ merchants.
Maintenance, troubleshooting and repair
57