Simrad SH90 - REFERENCE MANUAL REV A Reference Manual page 201

323775/A
How to hoist the transducer from the sonar room
This procedure explains how to hoist the transducer shaft and
transducer from the sonar room. The control switches inside the
Motor Control Unit are used.
1 In the Motor Control Unit, set the hoist/lower switch
to HOIST.
Observe that the transducer is hoisted.
2
• The hoisting motor will automatically stop when the
transducer shaft reaches the upper limit switch.
• If necessary, the hoisting can easily be stopped in any
position by setting the switch
3 When the transducer shaft has been hoisted to the requested
position, set switch
Finalizing maintenance work
When the maintenance work on the hull unit has finished, use
hoist/lower switch
S302
position.
The, set the hoist/lower switch
Manual lowering and hoisting using the hand crank
If the normal hoist/lower operation does not work, and the
3-phase voltage for the hoisting motor is unavailable (indicators
and are not illuminated), the transducer can be hoisted or
L1 L2
lowered manually by means of the hand crank.
Remove the 3–phase mains fuse for the hull unit.
1
2 Locate the motor protecting switch
Control Unit.
3 Release by moving the handle down to position OFF.
S301
Locate the hand crank inside the Motor Control Unit.
4
5 Remove the plastic plug on the top cover of the Hull Unit,
and mount the hand crank onto the stub shaft through the
hole in the top cover.
Use the hand crank to lower and hoist the transducer.
6
Continue until the transducer is fully lowered or hoisted.
7 Remove the hand crank from the stub shaft, and mount it in
its storage position in the Motor Control Unit.
Activate the
8
S301
handle up to position ON.
9 Re-insert the 3–phase mains fuse for the hull unit.
On-board maintenance
to position STOP.
S302
to position STOP.
S302
to hoist the transducer to its upper
to REMOTE.
S302
S301
motor protecting switch by moving the
S302
in the Motor
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