Operation Manual

Simrad SH80
162
850-164385 / Rev.C
Emergency hoisting and lowering
In case of a failure or an emergency in the normal hoist/lower
operation controlled from the Sonar Operating Panel, the
transducer may be hoisted and lowered from the Sonar Room.
Local control switch S302
If the 3-phase voltage for the hoist/lower motor and the +24 Vdc
stand-by voltage from the Transceiver Unit are available, the
transducer can be hoisted or lowered by means of switch S302
in the Motor Control Unit. The motor will automatically stop
when the transducer shaft reaches the upper or lower limit
switch.
Remember to set the switch back to Remote position when
finished.
Hoist/lower contactors K301 and K302
If the 3-phase voltage for the hoist/lower motor is available, the
transducer can be hoisted and lowered by operating the hoist
(K301)andlower(K302) contactors in the Motor Control Unit
by activating the small switch handle on the front of the
contactor.
Warning: The switches must be released before the
transducer shaft reaches upper or lower position,
as this operation overrides the two limit switches.
Manual hoist and lower operation
If the 3-phase voltage is not available, the transducer must be
hoisted and lowered by means of the hand crank. Observe the
following procedure.
1. Locate the motor overload switch S301 in the Motor
Control Unit, and press the red button marked 0.
2. Locate the hand crank in the Motor Control Unit.
3. 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.
4. Use the hand crank to hoist and lower the transducer.
5. Remove the hand crank from the stub shaft, and mount it
in its storage position in the Motor Control Unit.
6. Press the black button marked 1 on the motor overload
switch S301.