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

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Risk of defective gyrosphere caused by “GYRO FAILURE”
Should a “GYRO FAILURE” alarm occur during power-up, the compass
is not working properly.
De-energize the system and visually check the connections to the gyro-
sphere, the follow-up step motor and the shaft encoder.
If the failure reoccurs when the compass is powered-up again, the instal-
lation has not been carried out correctly or the gyrosphere is defective
and must be replaced.
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Risk of defective gyrosphere
The gyrosphere may not be in operable working condition, if after a time
period of around 45 minutes after power-up the gyrosphere current has
not dropped below 320 mA.
If a visual inspection reveals no obvious cause of malfunction, the power-
up cycle of the gyrosphere must be completely repeated.
If after a time period of around 45 minutes after the second power-up
cycle the gyrosphere current has still not dropped below 320 mA, the
gyrosphere may not be in operable working condition.
Contact the Sperry Marine Service for advice.
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Risk of misleading gyrosphere data / operating values
The temperature and gyrosphere current values are indicated as reading
values at the CDU only.
Both values can be adjusted via correction values, which are set to neu-
tral (= no correction) values by default.
Therefore the indicated values may deviate from real gyrosphere operat-
ing values, which can only be measured at the required checkpoints by
authorized service personnel.
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Risk of inadequate correction values
Any wrongful or not instructed adjustment of the temperature and gyro-
sphere correction values will falsify a correct identification of the
NAVIGAT X MK 1 system‘s operating conditions.
Only authorized service personnel is allowed to change the temperature
and gyrosphere current correction values.
Never alter the correction values unless specifically instructed by Sperry
Marine.
`^rqflk Risk of inadequate testing / test values
The usage of any voltmeter NOT true RMS for testing will falsify the test
results.
The usage of a multimeter true RMS is absolutely mandatory.
Newer use a voltmeter not true RMS for testing purposes.
`^rqflk Risk of damage through inadequate operating conditions
Inadequate operating conditions such as e.g. ambient over temperature
or inadequate ventilation, can damage the gyrocompass and decrease
the system performance and the longevity of the system components.
Always keep to the recommended install and environmental conditions
to ensure trouble free operation and best performance of the gyrocom-
pass. Always maintain adequate ventilation at install place.
Additional ventilation may become necessary to meet required ambient
environmental conditions for best performance and system longevity.