Kongsberg Simrad ST90, Reference Manual

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General safety rules
Safety is important. The safety precautions must be followed at all times during installation
and maintenance work.
WARNING
The ST90 system operates on 115 VAC and/or 230 VAC at 50/60 Hz. This voltage is
lethal! You must never work alone on high-voltage equipment!
The hull unit is powered by a 3-phase high voltage.
This equipment must be installed, adjusted, and serviced only by qualified electrical
maintenance personnel familiar with the construction and operation of the equipment
and the hazards involved. Failure to observe this precaution could result in bodily
injury.
Personnel requirements
All personnel must be trained in relevant installation and maintenance work.
Personal protection
Installation personnel must wear suitable work clothes. The work clothes must not
contain sufficient static to ignite. Always wear a hard hat and suitable protective
footwear while handling heavy objects.
Power and ground
You must always turn off all power before installation or maintenance work on the
ST90 system. Use the main circuit breaker, and label the breaker with a warning sign
that informs others that maintenance or installation work is in progress on the system.
For safety reasons, two persons must always be present during troubleshooting with
power turned ON.
All ST90 system units must be properly grounded.
First aid
Read and understand the applicable first aid instructions related to electric shock.
Whenever installation or maintenance work is in progress, it is essential that a first
aid kit is available. All personnel must be familiar with the first aid instructions for
electrical shock and other personal injuries.
Weight
The various parts of the system may be heavy. Make sure that the appropriate tools
and certified lifting equipment are available. Always wear a hard hat and suitable
protective footwear while handling heavy objects.
Simrad ST90