Simrad SN90 Operator's Manual page 131

Purse seine and trawling sonar
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b
Remove the hand crank from its storage position.
c
Remove the plastic plug on the top cover of the hull unit.
d
Mount the hand crank onto the stub shaft through the hole in the top cover.
e
Locate the brake release screw on the motor.
f
Use an 4 mm Allen key to rotate the screw clockwise until the motor brake is
released.
g
Turn the crank until the transducer is fully lowered.
7
Hoisting the transducer
a
Turn the crank until the transducer is fully retracted.
b
Loosen the brake release screw to engage the motor brake.
c
Check with the hand crank to ensure that the motor brake is engaged.
d
Remove the hand crank from the stub shaft, and mount it in its storage position
in the Motor Control Unit.
e
Activate the
ON.
8
Make sure that the
Note
For normal operation from the Operating Panel, the switch must be set to REMOTE.
9
Close the cabinet door.
10 Insert the mains fuses for the hull unit.
Related topics
Lowering and hoisting the transducer from the sonar room, page 125
381295/B
Motor Protecting Switch
Hoist/Lower Switch
(S301) by pressing the operating handle to
is set to REMOTE.
Operating procedures
129

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