Raymarine E70085 Dragonfly, Operation Manual

Page: 27 / 96

4.8 Testing the transducer
Once the initial mounting procedures have been carried out, the
transducer must be tested prior to finishing the mounting.
The testing should be carried out with your vessel in the water,
with a depth greater than 0.7 m (2.3 ft) but less than the
maximum depth limit of the system.
The Sonar application will be able to maintain readings at depths
greater than the DownVision application.
Note: It may not always be possible to obtain depth readings
at higher speeds due to air bubbles passing under the
transducer.
1. Press and hold the Power button until a beep is heard.
2. Complete the Start-up wizard settings.
3. Use the View switcher to open a view which contains the
Sonar or DownVision application.
If the unit is operating correctly the bottom should be visible
on-screen and the depth reading displayed.
4. Start moving your vessel at a low speed and ensure the
depth reading and bottom are shown and that you have a
clear image on-screen.
5. Gradually increase the vessel speed up to your usual
cruising speed, whilst checking the display if the image
becomes poor, starts skipping or missing the bottom then the
transducer needs to be adjusted.
6. Height and angle adjustments should be made in small
increments, and re-tested each time until you obtain optimum
performance.
7. To adjust the angle of the transducer loosen the pivot bolt
approximately 3 turns and then pivot the transducer either
up or down.
8. Re-tighten the pivot bolt before re-testing.
9. When you achieve optimum performance at the desired
vessel speeds you can finish the transducer mounting.
Note: It may be necessary to make several adjustments to
the transducer before obtaining optimum performance.
4.9 Finishing the transducer mounting
Once you have achieved optimum performance at the desired
vessel speeds the transducer must be locked into position to
finish the installation.
Note: If the transducer requires repositioning ensure all old
holes are filled with marine grade sealant.
1. Loosen the kick-up adjustment screw.
2. Lift up the transducer and bracket pivot arm to gain access
to the mounting holes.
3. Drill the locking hole location taking care not to damage the
mounting bracket.
4. Fill the locking hole with marine grade sealant.
5. Secure the transducer and bracket by fully tightening all 3
mounting screws.
6. Push the transducer and pivot arm down until it clicks into
position.
7. Re-tighten the kick-up adjustment screw to the desired level.
Note: The Kick-up adjustment screw needs to be tight enough
to prevent kick-up during high speeds but loose enough to
enable the kick-up feature to activate if an object hits the
transducer when underway.
Location and mounting
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