Sperry Marine 4914-CA, Руководство по эксплуатации, установке и обслуживанию

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Risk of data loss through shutdown of the compass / power-off condition
After a shutdown of the compasses main and backup power supplies it
cannot be guaranteed that all menu settings remain stored unchanged.
Always check whether the shaft correction angle and alignment error cor-
rection values are noted correctly in the setup tables, before switching-
off the power supplies, see “Setup and Configuration Tables” on page A-
1 Appendix.
Always make sure to separately note the shaft correction angle and align-
ment error correction values before switching-down the compass for
maintenance or repair purposes.
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Risk of damage/destruction after power-down
After power-down of the gyrocompass system, it may take up to
45 minutes for the gyroscopes to stop rotating and the gyrosphere is
therefore extremely sensible against any movement. Should the gyro-
sphere touch the wall of the container, the momentum of the rotating
gyroscopes will make it topple and damage the centre pin.
Avoid any movement of the gyrocompass system during power-down
time. Always be extremely careful in case the gyrosphere container must
be handled during power-down time.
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Risk of damage/destruction through transport/wrong storing
When the container with the gyrosphere installed is temporarily stored
away, pack it into its original transport box or another suitable outer
package.
Always make sure that:
- the container is stored in an upright position,
- the temperature at the storage location cannot fall below 0°C,
- the container is not moved, tilted or subjected to shock.