Echotrac MKIII Operator's Manual 4.06
Page 11 of 48
January 21, 2019
4) To gain access to the supply roll turn the supply side door release lever located on the lower right side of the chart
panel counter clockwise and pull the door open.
5) Remove any remaining paper from the paper path and remove the spent supply roll from the holder
mechanism by grasping the core and pushing it to the left and pulling out.
6) To gain access to the take-up roll turn the take-up door release lever located on the lower left side of the chart
panel clockwise and pull the door open.
7) Remove the take-up roll by grasping it, pushing it to the left, and pulling out. To remove the old paper from the
take up spool, spin the take-up spool in the opposite direction the paper is wound onto the take-up spool.
Remove the plastic end cap using a twisting motion and pull the paper off.
To Install a Fresh Paper Supply Roll:
8) Remove the source paper ends from the spent core and insert them into a new paper supply roll.
9) Insert the roll in the slots until it reaches the end and shift to the right, locking into place. Make sure the paper
is feeding from the right side of the roll.
10) Thread the paper past the print head and towards the take-up side as indicated in the paper path drawing.
11) The paper can be attached to the take-up spool either with a small piece of tape or by inserting the paper in the
slot of the take-up spool. Inserting the paper in the slot requires folding up the edges of the paper. Replace the
end cap to the take up spool and insert the take-up roll into the chart the same way as the supply roll.
12) Close both doors and press the feed button until the paper is aligned. Close the print head release lever. Now
the unit is ready for normal operation.
Figure 3: Chart Module Top View
2.2 Transducer Installation
Proper mounting of the transducer is a crucial part of the installation of any "survey" echo sounder. An improperly
mounted transducer will result in poor system operation and unacceptable data quality.
In the case of temporary installations, the transducer may be mounted over-the-side. In permanent installations and
“class 1 surveys", hull mounts are generally preferred and often required. In either case, transducers should be
mounted at least 0.3 meters below the waterline. In cases where "over-the-side" mounts are exposed to wave action,
ensure that the transducer is mounted sufficiently deep so that it does not break the surface during vessel roll motions.
A preferred mounting location is near the keel of the vessel, in an area where the planning attitude of the hull at
speed, and the pitch and roll angles of the vessel in seas, have the least effect. The transducer should be mounted
far enough aft of the bow so that bubbles generated by the bow wave will not pass over the face of the unit.
Summary of Contents for Echotrac MKIII
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