190
442704/A
Lowering and hoisting the transducer using the hand crank
The Operating Panel controls the lowering and hoisting of the transducer. In case of a power
failure the transducer can be hoisted or lowered manually by means of a hand crank.
Prerequisites
You need a suitable screwdriver
or a large coin to open the Motor
Control Unit cabinet. You also
need a 4 mm Allen key.
Context
On larger hull units, the hoist
motor is provided with a motor
brake. The motor brake must be
released before the transducer is
manually lowered or hoisted.
Note
When not in use, the hand crank
must always be placed inside
the Motor Control Unit. When
removed from its storage position
the hand crank releases a safety
switch which disables hull unit
operation.
Procedure
1
Make sure that you have sufficient water depth below the keel before you lower the
transducer.
If your vessel is in dry dock, make sure that you have sufficient height between the hull
and the dry dock floor. The space under the hull must be free from tools, scaffolding,
personnel and other obstacles.
2
Remove the mains fuses for the hull unit.
3
Lowering the transducer
a
Use a spanner to open the door on the Motor Control Unit.
Simrad ST90 Reference Manual
Summary of Contents for Simrad ST90
Page 1: ...kongsberg com simrad Simrad ST90 REFERENCE MANUAL ...
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Page 337: ...442704 A 335 Related topics Sonar views page 326 User interface ...
Page 413: ...442704 A 411 Related topics Menu system page 375 Display menu page 384 Menu system ...
Page 631: ...442704 A 629 Related topics Concept descriptions page 626 Concept descriptions ...
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Page 688: ... 2021 Kongsberg Maritime ISBN 978 82 8066 211 8 ...
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Page 690: ...Reference Manual Simrad ST90 ...