REINSTALLATION OF ECHO SOUNDER TRANSDUCER UNIT.
Before the sensor unit is reinstalled , please check that the O-ring on top of the intermediate element and
also the water blocking O-ring inside the intermediate element, are free of damage and well greased.
Grease the transducer unit with water resistant grease and insert it into the top of the intermediate element,
pushing it as far down as it will go. To avoid excessive leakage during the reinstallation, it should go past
the upper water blocking O-ring (Min. 220 - Max. 250mm) .
Secure the sensor unit unit by screwing the nuts on the safety bolts rmly down on the top ange.
To overcome the water pressure, open gate valve slightly to help transducer unit pass the o-ring.
Open the gate valve to full opening.
Push the sensor unit all the way down, and secure it with the 6 each 16 mm hexagon nuts and washers.
On vessels with deep draft, it may be necessary to use the two nuts on the safety bolts to force the trans-
ducer unit into position.
Securing with the 6 each 16 mm nuts and washers, and 2 each 16mm nuts and washers on the safety bolts.
Check for leakage, tighten or repair if necessary.
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