Prerequisites
The following specific tools and consumables are required:
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• |
Ratchet (Socket: 13 mm) |
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Low‑strength threadlocker (Loctite 222 (or similar)) |
Procedure
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1 |
Make sure that the SY50 system is turned off.
Do not lower or hoist the transducer manually unless you have first disconnected all power. Make sure that all power to the hull unit is disconnected. Disengage the circuit breaker in the Power Supply Unit.
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2 |
Remove the protective cap (A) on the top cover. |
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3 |
Use a 13 mm (½ inch) ratchet to rotate the hoisting spindle. |
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4 |
Hoist the transducer to its upper position. |
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5 |
Turn the two centre screws (D) counterclockwise, with maximum three to four turns. |
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6 |
Apply a low strength threadlocker (Loctite 222 or similar) to the four screws (C) and tighten them firmly in sequential order. |
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7 |
Tighten the two centre screws (D) clockwise to prevent them from falling out. |
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8 |
Pull out the spacer jig (B), and put it back into the Power Supply Unit. |
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9 |
Replace the protective cap (A). |
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10 |
Engage the circuit breaker in the Power Supply Unit. |