Kongsberg Simrad ST90, Reference Manual

Page: 304 / 690

302
442704/A
Context
The upper parts of the hull unit include the mechanical gantry, the hoist motor, the hoisting
spindle and the Motor Control Unit. The transducer shaft is supported by the gantry, and
penetrates the mounting flange. The transducer cable is placed inside the transducer shaft.
The transducer is mounted to the bottom of the transducer shaft. The complete assembly is
mounted on the top of the installation trunk.
Note
The hull unit is heavy. Appropriate lifting equipment (lifting tackle, portable crane or ship’s
crane) is required. Always use appropriate lifting equipment to minimize risk of personnel
injury or equipment damages. Only certified equipment must be used.
The upper parts of the hull unit include the mechanical gantry, the hoisting motor, the
hoisting spindle and the junction box. The transducer shaft is supported by the gantry, and
penetrates the mounting flange. The transducer cable is placed inside the transducer shaft.
The transducer is mounted to the bottom of the transducer shaft. The complete assembly is
mounted on the top of the installation trunk.
Procedure
1 Make sure that the ST90 system is turned off.
2 Preparations:
a Make sure that none of the cables prevent you from lifting the hull unit.
Disconnect relevant cables.
b Fasten the lifting tackle to the two lifting eye bolts on either side of the top of
the gantry.
Note
Make sure that you use the correct lifting
eyes! There are two lifting eyes on each
side of the hull unit. One is located on the
top of the gantry, and one on the top of the
transducer shaft. Make sure that you use the
lifting eyes on the gantry!
c Take up the slack.
3 Loosen and remove the bolts that secure the
mounting flange to the top of the installation trunk.
4 Lift the hull unit.
Simrad ST90 Reference Manual