52
The MCU logs data at the following intervals:
at the start and at the end of the discharge operation;
at ten minutes intervals (or less, if set by the operator);
at the occurrence of any alarm;
if automatic or manual mode is selected;
any fault of out of range inputs from the transducers;
if any of the system settings is changed;
if the front panel key-switch is operated;
if the discharge rate changes by more than 10 l/NM;
if an alarm situation is cleared.
Each time data is logged an appropriate message is printed at the top to explain why the data has
been logged. The following messages can occur:
TIME INTERVAL REPORT
CONSOLE MODE REPORT
MANUAL DATA ENTERED
DISCHARGE VALVE OPEN
DISCHARGE PROHIBITED
DISCHARGE RATE INCREASING
CONTROL MODE REPORT
MANUAL TO AUTO CHANGE
OIL TYPE CHANGE
DISCHARGE VALVE CLOSED
NOTE:
According to the Regulations a printed record of the entire ballast water discharge
operation must be kept on board the vessel for at least 3 years.
7.2.1.4 Selftest mode (menu 1.4)
The selftest mode is entered when the <SELFTEST> key is pressed in menu 1.
In the self test mode an overview is displayed of all alarms since the MCU is last powered down.
When the GPS input signal is disconnected and a wire link is connected to the GPS socket an
internal test is carried out during the selftest. For further reference see section GPS problems 15.5
Figure 43
There is also a <BUZZER> key to test the internal buzzer. When the key is pressed the buzzer will
sound for approximately 2,5 seconds.
CONTROL Sample point: 1 22-11-11
selftest Oil type: 5 10:38
2011-11-21 14:57 - Bad shutdown
EPU: OK
free: 1927296 kB
BUZZERBACK
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