VAF instruments OILCON MARK 6M - 15.4 SYSTEM ALARMS

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15.4 SYSTEM ALARMS
15.4.1 No air
Consult section 15.7 and 15.8
15.4.2 No flow
Consult section 15.11.2
15.4.3 Power failures
Consult section 15.6
15.4.4 Communication failure
Probable causes Action
1
Communication link not correct

Check the power to the EPU.
 Check the communication link between the MCU and
EPU.
 Check with a voltmeter on connector X13, terminal 1, 2,
3, 4 of the MCU and connector X1, terminal 5, 6, 8 and
9 in EPU for data transmission.
 Term.1/2 or 5/6 for data transmission from MCU
 Term.3/4 or 8/9 for data transmission from EPU
If the alarm is persistent, please contact VAF Instruments
15.4.5 Led feedback error
Probable causes Action
1
Transmitter error

Check the cables from the measurement cell to the
junction box on the skid.
 Check the cables from the junction box on skid to the
EPU terminal strip.
If the alarm persists, it is likely that the cell is faulty and will
require replacement.
NOTE:
See section 9.1 for the replacement of the measurement cell assembly.