278
442704/A
Preventive maintenance procedures
Topics
Checking the environmental conditions in the sonar room, page 278
Inspecting and cleaning the display, page 279
Inspecting and cleaning the Processor Unit, page 280
Inspecting and cleaning the Operating Panel, page 281
Inspecting and cleaning the Transceiver Unit, page 281
Inspecting and cleaning the heat exchanger, page 282
Visual inspection of the hull unit, page 285
Visual inspection of the installation trunk, page 286
Inspecting and cleaning the transducer face, page 288
Painting the transducer face, page 291
Inspecting and replacing sacrificial anodes, page 294
Lubricating the hoisting spindle, page 295
Lubricating the transducer shaft sleeve, page 296
Checking the environmental conditions in the sonar room
It is important that the sonar room is kept dry. The ST90 units must not be exposed to
excessive temperatures, moisture or humidity. Such conditions can cause corrosive attacks
and subsequent failures to the electronic circuitry. Visit the sonar room at regular intervals
to check temperature and humidity, and take the necessary actions if the environmental
conditions are poor.
Prerequisites
The following specific instruments are required for this task:
• Thermometer
• Hygrometer
Procedure
1
Measure the ambient temperature in the room.
Simrad ST90 Reference Manual
Содержание Simrad ST90
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