Lowering the transducer: Hoisting motor with brake
This information relates to a hoisting motor with a motor brake.
Prerequisites
Image
You need a ratchet with a 13 mm (½ inch) socket.
Procedure
1 Make sure that you have sufficient water depth below the keel before you lower the transducer.
Note
If your vessel is in dry dock, make sure that you have sufficient height between the hull and the dry dock floor. The space under the hull must be free from tools, scaffolding, personnel and other obstacles.
2 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.
3 Remove the protective cap (A) on the top cover.
4 Fetch the spacer jig (B) from the Power Supply Unit. Insert it all they way as indicated in the illustration.
5 Remove the four screws (C).
6 Turn the two centre screws (D) clockwise to loosen the locking assembly (F).
7 Use a 13 mm (½ inch) ratchet to rotate the hoisting spindle.
8 Lower the transducer to its bottom position.
9 Replace the protective cap (A).