Operator Maintenance - Deckma Hamburg OMD-2008 Instruction Manual

12 Operator Maintenance

12.1 Routine maintenance
a) AT WEEKLY INTERVALS:
b) Flush the cell with oil free water.
c) Stop sample and oil free water flow.
d) Unscrew and remove the cell cap. For instruments equipped with Manual
Cleaning Unit (MCU), unscrew the MCU instead.
e) Insert a suitable Cell Cleaning brush (Art. No. 77555) into the cell and
clean it with upwards and downwards motion through the entire length of
the cell several times.
f) Remove the Cell Cleaning brush and replace the cell cap.
g) Open clean water valve and allow oil free water to flow through the
instrument for a few minutes.
h) Observe that the display is showing "0" to "2". If not, clean again.
i) Examine the status of the desiccator (Refer to chapter 10.4, Programming
Mode). The Desiccator status display indicates if the desiccator is worn
out and working insufficient. If the desiccator status is any other then OK,
the desiccator should be replaced. Additionally, the Measuring Cell Dew
Point Temperature can be checked. The Dew Point Temperature should
be below 0°C, otherwise the desiccator needs to be exchanged.
Note: Insufficient desiccator performance could result in condensation
inside the measuring cell and wrong measurement and/or damage to
optical components. Desiccator can easily be exchanged. Just unscrew
the desiccator, replace the desiccator with a new one (Art. No. 79550).
Make sure to close the desiccator cap properly. Allow the new desiccator
some time to absorb the humidity inside the measuring cell. Please note
that a desiccator package should never be opened unless it is installed
immediately.
j) Switch Clean Water Valve to SAMPLE setting.
Issue: 25.09.2015 preliminaryInstruction Manual OMD-2008 (All Versions)
DECKMA HAMBURG GmbH
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