Instrument Start-Up Sequence; Flow Rate Adjustment; Figure 22. "Initializing Display; Figure 23. "Normal Operation" Display - Deckma Hamburg OMD-24 Series Instruction Manual

12.2 Instrument Start-Up Sequence

Switch on:
a) Power Supply (24V)
b) Sample Flow
c) FW Flow
d) Air Supply 4 - 6 bar (Automatic Cell Cleaning Device)
Make sure, that the Power LED is illuminated and the display is showing the initializing
display for about 15 sec. After that time, it will change to the "normal operation" display,
showing the actual measurement as shown below in Figure 22. "Initializing Display" and

Figure 23. "Normal Operation" Display.

Figure 22. "Initializing Display"

Allow a period of time for water entering the Sample Glass Tube. It is recommended to
let oil free water flow for about 10 minutes. Switch the EV, the manual valve, respectively,
to clean water stream. Check, that the display shows 0 to 2 ppm. If not, see 14.3
Cleaning Process. Check the relative desiccator humidity. Switch the instrument
back to sample stream flow to the separator sampling point connection.

12.3 Flow rate Adjustment

The flow rate is not influencing the accuracy of the instrument as required by IMO. The
adjustment is only important for the time delay between the sample point and the
monitor. The flow rate can be adjusted to compensate environmental changes and pump
aging, e.g.
If the installation has a clean water feed, the flow rate should be checked on both, the
clean water supply and the sample supply. If the clean water supply is obtained from a
high-pressure source, the flow rate will be higher than from the sample point.
Measure the amount of water flowing through the
approximately 2 liters per minute.
Figure 23. "Normal Operation" Display
instrument.
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Flow rate should be