Kongsberg Simrad ST90, Reference Manual

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They are mounted under the mounting flange at the top of the installation trunk.
Accessing the inside of the installation trunk, page 299
3 Inspect the physical conditions of the sacrificial anodes.
Check for damage and corrosion.
4 Replace the anodes if they are severely corroded.
Related topics
Maintenance procedures, page 186
Preventive maintenance, page 272
Preventive maintenance schedule, page 273
Preventive maintenance procedures, page 278
Accessing the inside of the installation trunk, page 299
Lubricating the hoisting spindle
The hoisting spindle is positioned between the gantry and the transducer shaft. The top of
the transducer shaft is mounted to the hoisting spindle with a lifting clamp. When the
hoisting spindle turns in either direction the lifting clamp moves up and down, and so does
the transducer shaft with the transducer.
Prerequisites
The ST90 system is turned off. No special tools are required for this task. The following
specific consumable is required for this task:
• Lubricant
Use a machine oil that is insoluble in water, does not dry out, and can withstand the
rotation without causing stains.
We recommend the following lubricant: QMI H1 Clear grease
•
Manufacturer
: QMI Products
•
Manufacturer’s website
: https://qmiproducts.com
•
Kongsberg Maritime part number
: 450826
Context
The hull unit was lubricated as a part of the production process. It was thus provided fully
lubricated when delivered to the vessel. During normal conditions, the lubricant applied
will last for a long period of time. Additional lubrication of the hull unit must only take
place when required.
Maintenance procedures