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Simrad FS25 Manual

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901-10037001/1.1 FS 20/25 Operators Manual
Page 5.10 Maintenance and Troubleshootin
g
Kongsberg Simrad Mesotech Ltd.
Port Coquitlam, BC - Canada
For an FS900 deployment package, configured with an FS3300 head, be advised
that the FS3300 head requires the most attention of the vertical heads, because it is
the easiest to damage. The FS3300 head, when connected directly to the
TTM/PWR unit with a test cable, should be run with the switch in “TEST”. If you
make a mistake and have the switch in “FS20”, it will be fine for a short period of
time, but the head will really start to heat up and may damage the power supply if
run for a longer period of time.
WARNING
If you connect an FS 3300 sonar head, with the power switch set at “FS25”
(200Vdc), you will damage your sonar.
The TS10, TS15 and TS15 S are more forgiving than the FS3300 heads when it
comes to any mistakes in switch positions. They are all designed to run at 200Vdc
without being damaged. For purposes of using the test cable, the TS10 can be run
with the switch in “TEST”; the TS15 and TS15 S are both 1KW sonars, with higher
input power requirements, and should be run on the test cable with the switch in the
“FS20” position.
5.4.2 Power Supply Meter Readings
The voltage and ampere meters are useful for monitoring the trawl unit power
requirements. For the most benefit, these meters are mounted on the front panel of
the PWR/TTM unit next to the trawl voltage selection switch for continuous
monitoring.
When the system is first installed, and initial run up of the deployment package is
done using the test cable, voltage levels and current values should be recorded after
the PWR/TTM unit is turned on, and power is supplied to the deployment package.
After the full system is running in normal operating mode (i.e., with range and scan
speed set to values normally used during fishing), voltage levels and current draw
should again be observed and recorded. This first part would confirm the operation
of all components of the system on the test cable and establish a set of known
conditions and readings that should be consistent and remain constant until one
of the components is replaced, at which time you would repeat this process.
You will now switch over from the test cable to the 3
rd
wire and repeat the process of
recording voltage levels and current draw for both situations described above
(PWR/TTM unit alone and then with the full system up and running). Typical values
will vary depending on the type of system (i.e. deployment package with various
combinations of head types and sensor modules) installed. To facilitate monitoring
of this information, these values should be recorded on the chart provided in Part 7.
“Attachments”.
… 82 …


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