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12 SPECIAL PROCEDURES
12.1 Overboard (Untreated Sewage) Discharge procedure
The ECOmar S S.T.P. allows to discharge the untreated sewage directly overboard, according to IMO/MARPOL regulation.
Perform the overboard (untreated sewage) discharge procedure only when permitted by the IMO/MARPOL regulation.
To perform an overboard (untreated sewage) discharge, follow this procedure:
1. From the main page of the Main Control Box choose Manual
mode (refer to the Manual mode section);
2. Set a your supply 3-way ball valve (G), installed between the filling pump and the ECOmar S S.T.P. Main Unit (refer to
figure below and to attached flow diagrams), in the outboard discharge position;
3. From the Manual mode page of the Main Control Box, activate the filling pump (refer to the Manual mode section);
4. In case of systems provided with 2 Tanks Control configuration, repeat all the steps for each filling pump, otherwise for
systems supplied with 1 Tank Control configuration ignore this step;
5. Once the Collecting Tank (your supply) is empty, stop the filling pump (refer to the Manual mode section);
6. Re-set three-way ball valve (G), in to ECOmar S operation position (refer to figure below and to attached flow diagrams);
7. Exit the manual mode, and reset the plant in automatic mode (refer to the Manual mode section);
8. To re-start the system follow the evert-day start-up procedure (refer to the ROUTINE OPERATION section).
Fig. 12.1 – Untreated Sewage outboard discharge flow diagram
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