VAF instruments OILCON MARK 6M, Technical Manual

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Alarm Description
No flow
If for any reason there is no flow through the Oilcon
®
Oil Discharge Monitoring and Control
System the NO FLOW alarm is activated. The Sample pump will be stopped automatically to
prevent any damage to the pump or motor.
If in flush or shutdown mode the system will return to standby mode. When in Sample mode the
system will go to the Idle mode.
Zero error
During the calibration check of the Oilcon
®
Oil Discharge Monitoring and Control System, during
Flush or Manual Flush mode, the ZERO ERROR alarm can be activated if the flushing water is
dirty, oily or if it contains air.
The system will go to Idle mode and from there only the Shutdown mode can be selected, to
resume operation after the fault is cleared. Thus a restart is made from Standby.
Path dirty
During the calibration check of the Oilcon
®
Oil Discharge Monitoring and Control System the
PATH DIRTY alarm can be activated if the optical path between the laser transmitter and the
direct receiver is obscured.
The system will go to Idle mode and from there only the Shutdown mode can be selected, to
resume operation after the fault is cleared. Thus a restart is made from Standby.
Power/communication
failure
If during operation of the Oilcon
®
Oil Discharge Monitoring and Control System a fault develops in
the communication link between the MCU and the EPU or a power failure condition occurs, then
the POWER/COMMUNICATION FAILURE alarm is activated.
The system will go to the Standby mode. However during such a situation the emergency power
supply will take over, thus no data will be lost.
Led monitor error
If an optical LED failure is detected during operation of the Oilcon
®
Oil Discharge Monitoring and
Control System the LED MONITOR ERROR alarm is activated.
Flow overrange
Flowmeter 1 or 2
If during operation of the Oilcon
®
Oil Discharge Monitoring and Control System an over-range
fault is detected in the flowmeter signal the FLOW OVERRANGE alarm is activated. The specific
flowmeter-1 or -2 is shown.
Flow underrange
Flowmeter 1 or 2
If during operation of the Oilcon
®
Oil Discharge Monitoring and Control System an under-range
fault is detected in the flowmeter signal the FLOW UNDERRANGE alarm is activated. The
specific flowmeter-1 or -2 is shown.
This alarm is only applicable if the Oilcon
®
Oil Discharge Monitoring and Control System is
equipped with two flowmeters.
In case an alarm is triggered, section 15 of this manual should be consulted for corrective actions.
7.6 SYSTEM FAILURES
IMPORTANT:
On any failure of the system the discharge should be stopped and the failure should be
noted in the Oil Records Book. A manually operated alternative system shall be
provided and may be used in the event of such a failure, but the defective unit must be
made operable before the tanker commences its next ballast voyage, unless it is
proceeding to a repair yard.
7.6.1 Auto/manual operation
In the occasion of a failure of one of the three transducers in the system (Oilcon
®
Oil Discharge
Monitoring and Control System, ships log or discharge flowmeter) the input of these transducers can
be changed from Auto to Manual. This can be done by following the next instructions:
1. operate the MCU until the system is in SET Up mode or the IDLE SET UP mode.
2. select the appropriate input (ship’s speed, discharge flowrate or oil content).
3. change the appropriate input from automatic to manual or vice versa: Automatic input is
indicated by “A”, manual input by “M”.
4. enter the value for that input with the numeric keys.
5. operate the system until back in IDLE mode.