Operator Maintenance; General Test; Normal Operation - Deckma Hamburg OMD-24 Series Instruction Manual

14.

Operator Maintenance

 (See Section 2.
WEEKLY INTERVALS:
MONTHLY INTERVALS: 14.7 MCU and Automatic Cell Cleaning Device
The Operator Maintenance should be scheduled at least once a week. If needed, prepare
the Quick Check List to keep track on maintenance. For more information, see section
25.1

14.1 General Test

a) Visually inspect instrument for obvious leakages or damage.
b) Visually check condition of cables and connections.
c) Check the desiccator:
- Press "SYS" button, select Measuring Cell, confirm.
- Internal data is displayed. Identify Dew Point Temperature [°C] and relative
humidity [%rH] data.
The relative humidity [%rH] should be below 10%rH. Dew Point Temperature should
be below 0°C. If not, desiccator exchange is recommended. For more information, see
section 23.2.4

14.2 Normal Operation

d) Switch the Electrical Valve or manual valve to fresh water, so that the cell is flushed
with oil free water. Check 23.2.2 Functional Button "ON".
i
When operated via the front panel the Electrical Valve will automatically switch back
to normal operation (sample stream measurement) after approximately 120 seconds
of clean water flushing.
For operating the Electric FW Valve press the "ON" button, select "FW FLUSH" change
the Status to "ON". The EV-Valve will switch over to fresh water immediately and
remain in fresh water setting for 2 minutes before switching back to normal operation.
If a prolonged flushing is desired, it can be retriggered within the 2 minutes, or
repeated afterwards.
Anytime the EV-Valve is switched to fresh water, the OMD-24 will be in alarm
condition, as required by IMO MEPC.107(49). If the instrument is switched on to FW
remotely, it will remain so until the remote signal is changing.
e) Let the oil free water flow for few minutes.
f) Verify that the display is showing 0 to 2 ppm. If this is the case, continue with the steps
r) to t).
Important Notes).
14.1 to 14.6
Functional Button "
SYS"
Page: 60
Data Logger Checking
Operator Maintenance Quick Checklist.
.