38
9.4.3
Sludge Tank Overflow Alarm
When the discharged sludge level inside the sludge tank reaches the maximum level, detected by the installed level probe (your
supply), the system will trip; and on the display of the Main Control Box will appear the Sludge Tank Overflow Alarm screen.
In case that a fault for Sludge Tank Overflow Alarm occurs, the plant display shows the following flashing screen:
Check that the sludge tank is empty; if it is not, empty it according to IMO/MARPOL regulation, otherwise check the correct
functioning of the level probe (your supply) installed on the sludge tank.
Once the fault that has caused the alarm signaling is solved, you can reset the alarm signaling by pressing the STOP/ESC key.
At this point the alarm signaling will be reset and the display will show:
Press again the STOP/ESC key to return to the system main page. Then, restart the plant by pressing the START/ENTER key,
the system will begin to run from the filling step if the liquid level inside the Treatment Tank is below the min level of multilevel
sensor; otherwise from the chemical dosing phase.
9.4.4
Tank Overflow Alarm
When the liquid inside the Treatment Tank reaches the absolute maximum level, detected by the multilevel probe (ball type),
the system will trip; and on the display of the Main Control Box will appear the Tank Overflow Alarm screen.
In case that a fault for Tank Overflow Alarm occurs, the plant display shows the following flashing screen:
Check the multilevel sensor (ball type) installed on Treatment Tank for any blockages or malfunctioning. Verify that the liquid
inside the Treatment Tank is above the Absolute Max level, and empty the treatment tank (refer to the
SPECIAL
PROCEDURES
section), resending the liquid back to the collecting tank or discharging it according to IMO/MARPOL
regulation. Check that all pumps are working correctly.
Once the fault that has caused the alarm signaling is solved, the alarm signaling will be automatically reset and the display will
show the following screen:
Press again the STOP/ESC key to return to the system main page. Then, restart the plant by pressing the START/ENTER
key, the system will begin to run from the filling step.
9.4.5
Overload Alarm
If the current absorption of the plant is higher than the maximum value (refer to attached Test Report) set on the switch circuit
breaker installed inside the Main Control Box; (see the component on the figure below), the system will trip; and on the display
of the Main Control Box will appear the Overload Alarm screen.
In case that a fault for Overload Alarm occurs, the black switch button of the circuit breaker (refer to
t
he figure below) is in
the OFF position (pushed out from the breaker) and the plant display shows the following flashing screen:
Current Fault
NO FAULT
Type ESC to reset
Current Fault
TANK OVERFLOW
Type ESC to reset
Current Fault
Sludge Tank Overflow
Type ESC to reset
Current Fault
NO FAULT
Type ESC to reset