Simrad Simrad SP70, Руководство по установке

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Simrad SP70
98
851-164336 / D
9.5 Adjusting the middle-position switch
Note
Only the SP70 hull unit is equipped with this switch.
Normally, when the transducer is selected to be the middle position
on the Operating Panel, only one half of the transducer’s face
should be outside the sonar trunk.
The middle position switch, which is magnetic, must be adjusted
with regard to to the trunk’s length. Observe the following
procedure:
1 Set the motor overload switch S301 to normal position by
pressing the black button marked 1 .
2 Hoist the hull unit to its maximum upper position using the
hoisting/lowering control switch.
3 Measure the distance X between the bottom of the transducer
face and the bottom of the trunk.
→
Refer to figure 34 for a visual description of the X measurement.
4 Write the measured distance here: X = mm.
5 If it is not possible to measure the distance X , it can be
calculated using the total trunk height D .
- Use the table below to perform the calculation.
Total trunk height D =
mm
-- Distance flange/transducer bottom = 760 mm
= Distance X mm
6 Use the hoisting/lowering switch in the Motor Control Unit
to position the transducer in the calculated correct position
X + 425 mm.
→
Refer to figure 34.
7 Loosen the bracket for the middle position switch.
8 Align the switch relative to the magnet as shown on the
figure. If needed, spare cable is coiled behind the bracket.
9 Fasten the bracket and check that the distance between the
magnet and the switch is approximately five -5- millimetres.
10 Check the passing of the middle position switch by using the
hoisting/lowering switch.
11 Use the hoisting/lowering switch to hoist the Hull Unit to its
maximum upper position.
12 Release the motor overload switch S301 by pressing the red
button marked 0 . This is to prevent unwanted lowering of the
transducer.
13 Set the hoisting/lowering control switch to Stop .