VAF instruments OILCON MARK 6M, Technical Manual

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15.4.9 Discharge rate failure
Probable causes Action
1
Discharge rate to high. 
Check the overboard discharge rate and reduce it to
clear the alarm.
Also consult section 7.5
15.4.10 Total discharge oil limit alarm
Probable causes Action
1
The maximum oil limit is
reached 
STOP the discharge operation immediately.
Also consult section 7.5
NOTE:
The maximum amount of oil for this voyage is discharged. the total oil may only be
reset at the start of a new ballast voyage.
15.5 GPS PROBLEMS
15.5.1 No GPS signal visible
Probable causes Action
1
Wrong GPS settings
Check that GPS setting are:

GPS: NMEA 0183

Baud rate: 4800

Data bits: 8

Parity: none

Stop bits: 1
2
Internal GPS failure

Disconnect the GPS signal cable from socket X14.

Connect terminals 1 - 3 from socket X14.

Connect terminals 2 - 4 from socket X14.

A GPS NMEA string will be simulated.

If no GPS coordinates are showing there is an internal
failure.