Bridge steps
These tasks are done on the bridge.
Prerequisites
The SU90 system is turned on and operates normally. Neither tools nor instruments are required.
Context
Certain steps in the procedures are location specific. The steps marked [Sonar room] are done in the sonar room.
Procedure
1 Make sure that you have sufficient water depth below the keel before you lower the transducer.
2 [Sonar room]:
a Use a spanner to open the door on the Motor Control Unit.
b Locate the Motor Protecting Switch (S301). Set the switch to position ON.
c Locate the Hoist/Lower Switch (S302). Set the switch to position REMOTE.
d Close the door on the Motor Control Unit.
3 Lower the transducer to its middle position.
a On the Operating Panel, press Middle.
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While the transducer is moving the indicator lamp flashes, and an audible signal is sounded. When the requested position has been reached, the indicator lamp is lit, and the audible signal stops.
The Mk3 Operating Panel does not support a middle position for the transducer.
b [Sonar room]: When the transducer shaft stops, make sure this happens at the correct middle position.
4 Lower the transducer to its bottom position.
a On the Operating Panel, press Down.
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While the transducer is moving the indicator lamp flashes, and an audible signal is sounded. When the requested position has been reached, the indicator lamp is lit, and the audible signal stops.
b [Sonar room]: When the transducer shaft stops, verify that the correct bottom position has been reached.
5 Hoist the transducer to its middle position.
a On the Operating Panel, press Middle.
b [Sonar room]: When the transducer shaft stops, make sure this happens at the correct middle position.
The Mk3 Operating Panel does not support a middle position for the transducer.
6 Hoist the transducer to its upper position.
a On the Operating Panel, press Up.
Image
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While the transducer is moving the indicator lamp flashes, and an audible signal is sounded. When the requested position has been reached, the indicator lamp is lit, and the audible signal stops.
b [Sonar room]: When the transducer shaft stops, verify that the correct upper position has been reached.
7 Lower the transducer to its bottom position.
a On the Operating Panel, press Down.
b [Sonar room]: When the transducer shaft stops, verify that the correct bottom position has been reached.
8 Hoist the transducer to its upper position.
a On the Operating Panel, press Up.
b [Sonar room]: When the transducer shaft stops, verify that the correct upper position has been reached.
9 Repeat the test using the Hull Unit Control dialog box on the top bar.
10 Notify the sonar room that the test is finished.