User guide

901-10037001/1.1 FS 20/25 Operators Manual
Page 5.24 Maintenance and Troubleshootin
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Kongsberg Simrad Mesotech Ltd.
Port Coquitlam, BC - Canada
Problem Action/Possible Cause
head is properly mounted in trawl
housing.
• No Sensor Module Data
-No depth, temperature or catch
indication
• Ensure sensor module connected
• Ensure display of sensor data is
enabled
• Problem can be in either the head or
the sensor module
• If backup Vertical Head and/or
backup Sensor Module available,
swap out units to determine which is
faulty
• Send faulty unit ashore for repair
• Missing Sensor Module Data
-Depth and temperature present
-No catch indication at all (yellow
bars for eggs on net, then pink when
net starts to fill)
• Ensure catch indication is enabled
• Ensure catch sensor batteries are
properly charged
• If the catch indication is enabled and
the batteries are properly charged
then the problem will be in the sensor
module
• Send faulty unit ashore for repair
• Sensor Module Catch Indication
-Depth and temperature present
-Catch Indication working but fires off
all the eggs at once (even channels
that aren’t in the water)
• Caused by a power reset in the
sensor module; the power to the
sensor module is supplied by the
head
• Can be caused by ship power
fluctuation
• Normal (and acceptable) if the eggs
clear and return to normal indication
within 70-90 seconds
• Not Normal if they won’t clear on
their own (unit has gone into
continuous reset)
• You should not have to turn the
power off and then back on to get
rid of this problem
• Sensor Module faulty; send
ashore for repair
• Not Normal if the frequency of this
problem starts to occur more often,
even if they still clear on their own
• Send sensor module ashore for
testing