Simrad SP90

MaintenancesDocking the vesselWhen docking the vessel, great care must be taken not to damagethe sonar trunk and protecting blister.WARNINGThe sonar must never be powered up when theship is in dry dock. The transducer will bedamaged if it transmits in open air. To preventinadvertent use of the sonar, set switch S102attherearsideoftheSonarprocessorUnittoOff whenever the vessel is in dry dock.→Refer to figure 17 on page 148 for the location of this switch.On vessels which have been in dock, the Hull Unit must bethoroughly examined, and the hoist/lower functions must bechecked out and observed while operating the hoisting/loweringswitch (S302 in the figure in the Motor Control Unit on the HullUnit). The hoist/lower motor will automatically stop when thetransducer shaft reaches the upper or lower limit switch.HOISTREMOTESTOPLOWERS302HandcrankS303S 302HAND CRANKS 303K301K302S301K301K302(CD3125 / WMF / GIF)Figure 20 The motor control unitRemember to set the hoisting/lowering switch back to Remote fornormal operation.850--164511 / B151