Sub MkIIIF
User Manual
Int. Approved
Document ref: ASF3-800-08
November 2018
Page 45 of 79
Copyright © 2009 Analox Ltd. All Rights Reserved.
Commercial in Confidence
CO2 Alarm Operating Point (%) Related to Depth (BarA) assuming Set-point set to
0.50%SEV
Depth (BarA)
7
0.07
1
0.07
0
0.06
9
0.06
8
0.06
8
0.06
7
0.06
6
0.06
5
0.06
4
0.063
8
0.06
3
0.06
2
0.06
1
0.06
0
0.06
0
0.05
9
0.05
8
0.05
7
0.05
7
0.056
9
0.05
6
0.05
5
0.05
4
0.05
4
0.05
3
0.05
3
0.05
2
0.05
2
0.05
1
0.051
10
0.05
0
7.4.2
List of Fault Conditions
The table below provides details of all of the fault conditions annunciated by the system.
FAULT
INDICATION
CONDITION CAUSING FAULT
SUGGESTED REMEDIAL ACTION
“REM Comms
Fault” appears in
place of sensor
reading,
Operator Console cannot
communicate with the Sensor
Unit
Ensure that sensor is connected and
powered up. If it is, check fuses and
wiring
“Failure” appears
in display window
The remote sensor unit has
detected a fault associated with
one of its sensors
Ensure first that there is not a significant
excess of CO2 present. Flush sensor
with zero gas and attempt calibration. If
the fault persists fit spare sensor unit
–
contact Analox for repair of faulty unit.
“Under Rnge”
appears in display
window
Sensor is deemed to be under-
range
It is necessary to perform a zero
calibration as it should not be possible to
measure a negative amount of gas.
Refer to Section 10.
“Over Range”
appears in display
window
Sensor is deemed to be over-
range
In gas terms, there could be a
dangerous excess of gas present.
Exercise caution until it is known
whether the over-range is valid or not. If
not, attempt recalibration of the sensor.
If unsuccessful, fit spare sensor unit
–
contact Analox for repair of faulty unit.
“Calib Span”
appears in the
display window
When trying to calibrate the span
of an infra red sensor (CO2), it
has been determined that the
sensor is too far from the correct
point in order to perform a
calibration successfully.
Attempt recalibration of the sensor using
the correct gas and procedure. If the
fault persists, fit spare sensor unit
–
contact Analox for repair of faulty unit.
Summary of Contents for Sub Mk III F
Page 2: ......
